Outotec Oyj Patent applications |
Patent application number | Title | Published |
20150197868 | APPARATUS FOR USE IN ELECTROREFINING AND ELECTROWINNING - An apparatus for electroproduction or electrorefining of material including an electrode having a first conducting layer and a second conducting layer
| 07-16-2015 |
20150197828 | METHOD OF USING A SUSPENSION SMELTING FURNACE, A SUSPENSION SMELTING FURNACE, AND A CONCENTRATE BURNER - The invention relates to a method of using a suspension smelting furnace and to a suspension smelting furnace and to a concentrate burner ( | 07-16-2015 |
20150191840 | APPARATUS FOR USE IN ELECTROREFINING AND ELECTROWINNING - An apparatus for use in the electroproduction or electrorefining which includes first and second electrodes, at least one bus bar, and at least one power supply wherein a power supply is associated with an electrode and is arranged to regulate a current supply from a bus bar to the electrode. | 07-09-2015 |
20150115511 | COOLING ELEMENT AND METHOD FOR MANUFACTURING A COOLING ELEMENT - The invention relates to a cooling element for a pyrometallurgical furnace such as for a flash smelting furnace or for a flash converting furnace or for a suspension smelting furnace. The invention relates also to a method for manufacturing a cooling element for a pyrometallurgical furnace such as for a flash smelting furnace or for a flash converting furnace or for a suspension smelting furnace. The cooling element ( | 04-30-2015 |
20150082656 | PROCESS AND SYSTEM FOR RECOVERY OF THERMAL ENERGY FROM A STEAM DRYER - The invention concerns a method for the recovery of thermal energy from a steam dryer | 03-26-2015 |
20140327194 | FLUID COOLED LANCES FOR TOP SUBMERGED INJECTION - A TSL lance has an outer shell of three substantially concentric lance pipes, at least one further lance pipe concentrically within the shell, and an annular end wall at an outlet end of the lance which joins ends of outermost and innermost lance pipes of the shell at an outlet end of the lance and is spaced from an outlet end of the intermediate lance pipe of the shell. Coolant fluid is able to be circulated through the shell, by flow to and away from the outlet end. The spacing between the end wall and the outlet end of the intermediate pipe provides a constriction to the flow of coolant fluid to increase coolant fluid flow velocity therebetween. The further lance pipe defines a central bore and is spaced from the innermost lance pipe of the shell to define an annular passage, whereby materials passing along the bore and the passage mix adjacent to the outlet end of the lance. The end wall and an adjacent minor part of the length of the shell comprise a replaceable lance tip assembly. | 11-06-2014 |
20140284852 | LANCES FOR TOP SUBMERGED INJECTION | 09-25-2014 |
20140239560 | METHOD FOR CONTROLLING THE SUSPENSION IN A SUSPENSION SMELTING FURNACE, A SUSPENSION SMELTING FURNACE, AND A CONCENTRATE BURNER - The invention relates to a method for controlling suspension ( | 08-28-2014 |
20140239520 | PACKED TOWER - A packed tower for the absorption of water or SO | 08-28-2014 |
20140231269 | EQUIPMENT AND METHOD FOR ELECTROLYTIC RECOVERY OF METAL - The invention concerns a system of gas ducts ( | 08-21-2014 |
20140182816 | GAS/GAS HEAT EXCHANGER - A heat exchanger for use in a contact group of a sulfuric acid plant includes a chamber in which a tube bundle is arranged on a circular ring. A gas space is formed between the tube bundle and a chamber casing surrounding the tube bundle. A gas supply opening is provided in the chamber casing and is configured to introduce a gas into the gas space substantially radially to the tube bundle. A gas outlet opening adjoins an interior space enclosed by the tube bundle in a substantially axial direction. A center of the tube bundle is offset with respect to a center of the chamber casing in a direction opposite to the gas supply opening. | 07-03-2014 |
20140175714 | APPARATUS AND METHOD FOR THE THERMAL TREATMENT OF LUMP OR AGGLOMERATED MATERIAL - An apparatus for the thermal treatment of lump or agglomerated material in a firing machine includes a travelling grate configured to convey the material through the firing machine. A firing chamber has a ceiling and side walls and is configured to generate temperatures required for the thermal treatment. The ceiling has a plurality of openings and the side walls have a plurality of burners that are directed obliquely upwards. A cooling zone is configured to pass cooling gases through the thermally treated material so as to heat the cooling gases. A recuperation tube is configured to recirculate the heated cooling gases to the firing chamber through the openings in the ceiling. | 06-26-2014 |
20140151942 | TOP SUBMERGED INJECTING LANCES - A lance for conducting a pyrometallurgical operation by top submerged lancing (TSL) injection, has inner and outer substantially concentric pipes. The lower end of the inner or at least a next innermost pipe is set at a level relative to the lower end of the outer pipe required for the pyrometallurgical operation. The relative positions of the inner and outer pipes are longitudinally adjustable to enable the length of the mixing chamber to be maintained at a desired setting during a period of use to compensate for the lower end of the outer pipe wearing and burning back. | 06-05-2014 |
20140151273 | PROBE ARRANGEMENT FOR A FLOTATION CELL - The flotation process is widely used in mineral industry for the separation of minerals from low-grade ore slurry. Several parameters, such as the bubble size distribution and/or amount of solids in the froth and slurry affect the outcome of the flotation process. To be able to monitor these parameters, knowledge of the temporal changes of froth-slurry phase interface as well as froth-air interface is essential. In the present invention, an electrical resistance tomography probe sensor, which is capable of analyzing the properties of froth and slurry based on the correlation between the estimated conductivity information and the parameters of interest, is introduced. | 06-05-2014 |
20140131221 | PERMANENT CATHODE AND A METHOD FOR TREATING THE SURFACE OF A PERMANENT CATHODE - The invention relates to a permanent cathode ( | 05-15-2014 |
20140124993 | OFF-GAS CHANNEL - An off-gas channel ( | 05-08-2014 |
20140117128 | EQUIPMENT TO PREPARE ORE CONCENTRATE FOR PELLETIZING - The invention relates to an equipment to prepare ore concentrate for pelletizing and sintering/indurating of pellets in ferroalloys production. The equipment comprises a grinder ( | 05-01-2014 |
20140099587 | BURNER ARRANGEMENT AND BURNER ASSEMBLY - The invention relates to a burner arrangement comprising a fluid cooled copper block. Further, the invention relates to a burner assembly, a duct element, a gas circulating duct, and a metallurgical furnace comprising said burner arrangement. The burner arrangement (B) comprises a fluid cooled copper block ( | 04-10-2014 |
20140083010 | PROCESS AND PLANT FOR THE PRODUCTION AND FURTHER TREATMENT OF FUEL GAS - A process for producing fuel gas and for carrying out a metallurgical process includes providing first and second process stages. In the first process stage, biomass is reacted with an oxygen-containing gas so as to obtain a fuel gas containing at least one of carbon monoxide, hydrogen, carbon dioxide and steam. The fuel gas is cooled to a temperature in a range from 300 to 600° C. The cooled fuel gas is subjected to a solids separation. In the second process stage, the fuel gas after the solids separation is directly supplied to at least one burner of the metallurgical process, the temperature of the fuel gas being maintained above the condensation temperature of tar and within the range from 300 to 600° C. by supplying heat. | 03-27-2014 |
20140021016 | PALLET CAR CHANGING DEVICE - A device for changing a pallet car in a plant for the treatment of bulk materials where pallet cars that are continuously conveyed by means of a lifting wheel and a lowering wheel on an outer rail and an inner rail in an endless chain includes, in a regions of a bottom and top strand of the lifting wheel, first and second outer curve links of the outer rail openable such that the pallet car is removable from the chain and another pallet car is insertable into the chain. The device includes a removal switch disposed in the region of the bottom strand of the lifting wheel, via which the pallet car is movable out from the chain, and a supply switch disposed in the region of the top strand of the lifting wheel, via which the pallet car is insertable into the chain. | 01-23-2014 |
20140000491 | CLINKER SUBSTITUTE BASED ON CALCINED CLAY | 01-02-2014 |
20130341283 | METHOD FOR PRODUCING A POORLY SOLUBLE CALCIUM-ARSENIC COMPOUND - The invention relates to a method for precipitating pentavalent calcium arsenate from an acidic solution, in which arsenic is at least partially in trivalent form. The acidic solution is neutralised before being routed to an arsenic oxidation stage,and a poorly soluble calcium-arsenic compound is precipitated from the solution, in which all the arsenic is pentavalent. | 12-26-2013 |
20130328250 | METHOD FOR CONTROLLING THERMAL BALANCE OF A SUSPENSION SMELTING FURNACE AND SUSPENSION SMELTING FURNACE - The invention relates to a method for controlling the thermal balance of a suspension smelting and to a suspension smelting furnace. The suspension smelting furnace, comprising a reaction shaft ( | 12-12-2013 |
20130291684 | PROCESS AND PLANT FOR TREATING ORE CONCENTRATE PARTICLES CONTAINING VALUABLE METAL - The present invention concerns a process and a plant for treating ore concentrate particles containing valuable metal and having at least arsenic and sulfur containing components. The process comprises a two-stage roasting process comprising a first roasting step ( | 11-07-2013 |
20130266493 | METHOD FOR SEPARATING NICKEL FROM MATERIAL WITH LOW NICKEL CONTENT - The invention relates to a method for separating nickel and other valuable metalsparticularly from material having low nickel content, which contains iron and magnesium in addition to nickel and other valuable metals. The material havinglow nickel content is subjected to pulpingand atmospheric leaching in acidic and oxidising conditions, in which the majority of the metals in themate-rialdissolve and the iron is partially precipitated. The precipitated iron is sepa-rated from the solution, after which nickel and the other dissolved valuable metalsare precipitated as sulphides. | 10-10-2013 |
20130243615 | PUMP | 09-19-2013 |
20130228533 | FEEDWELLS - The invention provides several improvements in feedwells, one of which being a feedwell comprising a mixing zone for dissipating the kinetic energy of a fluid comprising pulp, a settling zone for promoting flocculation of the pulp and at least one inclined deflecting element for at least partially separating the mixing zone from the settling zone. Other improvements include a shelf at least partially defining an inclined path for removing material from the shelf into a feedwell chamber; at least two outlets arranged in a substantially concentric relationship with respect to each other; a portion of a second conduit varies in its cross-sectional size and/or shape so as to connect a feed inlet to a first conduit; and a partition for partially separating an outer mixing zone and an inner settling zone. | 09-05-2013 |
20130192424 | METHOD FOR TREATING A SOLUTION CONTAINING ZINC SULPHATE - The invention relates to a method for treating a solution containing zinc sulphate, so that at least one of the rare metals such as indium, gallium and germanium can be separated from it. A portion of the metals to be separated can be precipitated from zinc sulphate solution by neutralizing the acidic solution and at least a portion is cemented by means of metal powder. The solid precipitates that are formed can be combined and treated subsequently in some suitable way to leach out the desired metals. | 08-01-2013 |
20130180895 | CONTROL METHOD OF A FLOTATION MACHINE THAT IS USED IN METALLURGICAL PROCESSES - The invention relates to a method of using a flotation machine that is used in metallurgical processes and to a flotation machine. The flotation machine foams hydrophobic particles from an aqueous slurry that contains these particles. The flotation machine includes a flotation cell ( | 07-18-2013 |
20130176815 | DEVICE AND METHOD FOR DISPERSING TWO SOLUTIONS IN EACH OTHER IN SOLVENT EXTRACTION - The invention relates to a mixing device and method by means of which two solutions that are insoluble or poorly soluble in each other are mixed together into a dispersion. The device consists of at least three helical bars rotating upwards around a shaft and supported on it, so that the support structures between the shaft and the helical rods are set essentially in a horizontal position. The device and method are particularly suitable for mixing solvent extraction solutions used in the hydrometallurgical recovery of metals to form a dispersion. | 07-11-2013 |
20130130186 | METHOD FOR THE CONTINUOUS SINTERING OF MINERAL MATERIAL AND SINTERING EQUIPMENT - The invention relates to a method and equipment for the continuous sintering of mineral material in a sintering furnace (S). In the method, a material bed ( | 05-23-2013 |
20130130185 | METHOD FOR STARTING A SINTERING FURNACE, AND SINTERING EQUIPMENT - The invention relates to a method and equipment for starting up a strand sintering furnace ( | 05-23-2013 |
20130129855 | VIBRATING MACHINE FOR PRODUCING MOLDED BODIES BY MEANS OF COMPACTING - A vibrating machine for producing a molded body by compacting a granular raw mixture includes an oscillatable vibrating table configured to receive a molding box. A clamping device is produced by at least two clamping closures, each including: a pivot bracket having a lower end being pivotally mounted on the vibrating table and an upper end including a cranking which is directed outward; a double-acting hydraulic pivot cylinder pivotally mounted on the vibrating table; a two-armed rocker arm pivotally connected to the pivot bracket and including an inner part that cooperates with the molding box and an outer part that cooperates with the hydraulic pivot cylinder; and a compression spring disposed between the cranking and the outer part of the rocker arm such that the rocker arm releases from a position closing the respective clamping closure upon a pressure in the hydraulic pivot cylinder being relieved. | 05-23-2013 |
20130125672 | MIXER-SETTLER, AN ARRANGEMENT COMPRISING AT LEAST TWO MIXER-SETTLERS AND A METHOD FOR MEASURING AND CONTROLLING THE VOLUMETRIC O/A RATIO AND PHASE DISENGAGEMENT TIME OF ORGANIC AND AQUEOUS PHASES IN A DISPERSION - The present invention concerns a mixer-settler, an arrangement comprising a train of at least two mixer-settlers and a method for measuring and controlling volumetric O/A ratio and phase disengagement time of organic and aqueous phases in a dispersion. A continuous flow of dispersion is led via an inlet channel ( | 05-23-2013 |
20130118306 | PROCESS AND PLANT FOR PRODUCING HOT METAL - A process for producing hot metal includes partially reducing granular raw materials containing iron oxide with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850° C. so as to obtain a reduced mixture. The reduced mixture is cooled to between 600° C. and 800° C. in a heat exchanger apparatus using a preheated process gas as a cooling medium that is preheated to between 300° C. and 500° C. before being introduced into the heat exchanger apparatus. The reduced mixture is then supplied to a smelting reduction unit via a discharge system. | 05-16-2013 |
20130104701 | METHOD FOR RECOVERING GOLD BY SOLVENT EXTRACTION | 05-02-2013 |
20130099431 | SUSPENSION SMELTING FURNACE AND A CONCENTRATE BURNER - The invention relates to a suspension smelting furnace comprising a reaction shaft ( | 04-25-2013 |
20130068138 | PROCESS AND PLANT FOR LOWERING THE RESIDUAL CARBON CONTENT OF ASH - A process for lowering the carbon content in ash includes introducing the ash having a carbon content of 1 to 20 wt.-% into a reactor where the ash is burnt at a temperature between 700 and 1100° C. Fuel is also introduced into the reactor. During combustion, microwave radiation is fed into the reactor. At least part of the energy released during the combustion is recovered. | 03-21-2013 |
20130060075 | METHOD AND APPARATUS FOR HOMOGENISING AND STABILISING AN IRON-BEARING RESIDUE - A method and apparatus for converting an iron-bearing residue generated in a hydrometallurgical process that contains small amounts of soluble heavy metals into a stable form by means of a neutralising agent. The residue is elutriated and the elutriated residue is fed into at least one stabilisation or homogenisation reactor, into which a neutralising agent is also routed, and the homogenous mixing together of the residue and neutralising agent takes place by means of a helix mixer, where the ratio of the diameter of the mixer to the diameter of the reactor is 0.75-0.99. | 03-07-2013 |
20130054191 | PROBE INDICATING INTERMATERIAL BOUNDARIES - The present invention describes a method, apparatus and computer program for detecting the locations of boundaries between different materials in a desired measurement volume. The apparatus uses at least one measuring probe, the electrodes of which are characterized in that they together form an assembly that differs from a straight line. In addition, a volume at a further distance from the assembly can also be observed by the assembly, so that measurements can be conducted remotely and, on the other hand, the apparatus stays unbroken in diverse measurement situations. By using the EIT-measurement and applying for example a so-called 1D-σ-method or methods of machine learning, electrical conductivity distributions in the measured volume are detected. As a result, the locations of the possible boundaries between different materials or for example thicknesses of different material layers are detected. | 02-28-2013 |
20130042438 | METHOD FOR PROCESSING SPODUMENE - The invention relates to a method for thermally processing α-spodumene, i.e. lithium aluminum silicate, by which treatment it is transformed into β-spodumene, which is more advantageous for further processing; in the method, concentrate or ore with a grain size of 20-1,000 μm is processed in a fluidized bed reactor, at a temperature of 800-1,000° C., by using an oxygenous gas as the fluidizing gas. | 02-21-2013 |
20130031883 | VORTEX FINDER SUPPORT AND CYCLONE HEREWITH - A vortex finder support is provided for fixing a vortex finder in an inlet region of a cyclone that includes a waste gas conduit leading out of the inlet region. A sleeve-shaped support element is configured to be disposed in the waste gas conduit and associated to the vortex finder, the support element including at least one lateral mounting hole having an approximately rectangular cross-section. A ring is configured to surround the support element and at least one of surround and be integrated in the waste gas conduit, the ring including a lateral opening. At least one holt having an approximately rectangular cross-section is configured to extend through the lateral opening of the ring and the mounting hole of the support element so as to connect the ring with the support element. | 02-07-2013 |
20130026270 | APPARATUS FOR FEEDING GRINDING BODIES TO A GRINDING MILL - The employed feed element in a grinding body feed apparatus of a grinding mill is the grinding bodies supply tank proper, in which the grinding bodies are charged from a ball hopper or storage. In connection with the supply tank, there is provided a grinding bodies discharge element, by means of which the grinding bodies are conducted to a duct serving as a feed chute and leading to the grinding mill, and via said duct, to the grinding mill proper. The opening and closing of the supply tank is carried out by external, opposing control elements that encircle the drum element of the supply tank in relation to its frame. By means of the feed device, it is possible to feed one ball at a time to the mill, in which case a correct number of balls can be supplied. | 01-31-2013 |
20130026049 | METHOD FOR RECOVERING VALUABLE METALS - A method for recovering valuable metals, such as lead, silver and gold from the residue of an electrolytic zinc process, wherein the residue from the zinc process is suspended and sulfidized for converting the lead and silver compounds into sulfidic form, and further flotated for forming a flotation concentrate that contains valuable metals, wherein the sulfidizing and flotation processes are controlled electrochemically, so that the content of the sulfide ions fed in the sulfidizing stage is adjusted by means of the redox potential to a level where the grain size of the created valuable metal sulfides is sufficient for flotating them, and that the redox potential of the flotation stage is adjusted to be within a range where the collector chemical is adhered to the mineral to be flotated, but the sulfides are not oxidized. | 01-31-2013 |
20130000869 | PROCESS AND PLANT FOR COOLING SULFURIC ACID - A process for cooling an acid that is withdrawn from an absorption apparatus of a sulfuric acid plant includes pumping the acid to be cooled from an acid pump tank and supplying the acid to a shell space of a heat exchanger. Water is supplied as a heat transport medium to heat transfer elements disposed in the shell space so as to at least partially convert, by heat transfer from the acid, the water to steam. The acid which was cooled in the heat exchanger is supplied back to the absorption apparatus. The water is separated from the steam in a steam drum. The separated water is recirculated to the heat exchanger using a pump. | 01-03-2013 |
20120325730 | FLOTATION MACHINE - An air distribution and mixing device is arranged in the vicinity of the bottom of a flotation cell for distributing air to the slurry for forming froth and mixing the slurry in the flotation cell. A rotor part of the air distribution and mixing device has air distribution apertures and is attached to the lower end of a drive shaft extending vertically in the flotation cell. The drive shaft has a hollow interior, which constitutes a flow channel for conducting flotation air to the air distribution holes of the rotor part. An electric motor for rotating the drive shaft is supported by a separate supporting framework, which is on top of the flotation cell. The electric motor is a permanent magnet motor that comprises having a vertical rotor shaft, the lower end of which is in permanent contact directly with the upper end of the drive shaft. | 12-27-2012 |
20120318102 | METHOD FOR ENHANCING SOLID-LIQUID SEPARATION IN CONJUNCTION WITH LATERITE LEACHING - The invention relates to the hydrometallurgical treatment of laterite ores in order to recover valuable metals. More specifically, the invention presented relates to a method for improving precipitation and solid-liquid separation in conjunction with the leaching of laterite ores. According to the method the slurry exiting the leaching of laterite ores is neutralised, after which part of the slurry is routed to solid-liquid separation. Iron is precipitated from the solid-liquid separation overflow by neutralising the solution and the solution that is formed, which includes jarosite seeds, is routed to an appropriate point in the process to control the precipitation of iron and to enhance the filterability of the solids. | 12-20-2012 |
20120308473 | METHOD AND APPARATUS FOR ADJUSTING THE CONCENTRATION OF ACIDS OR LYES - A method for adjusting a concentration of an acid or lye includes charging a medium for adjusting the concentration of the acid or lye into a supply conduit of the acid or lye so as to provide a combined stream. The combined stream is supplied through an inlet to a mixing chamber such that the combined stream is deflected upon entering the mixing chamber. The combined stream is mixed in the mixing chamber. The combined stream is discharged through an outlet of the mixing chamber such that the combined stream is again deflected upon being discharged from the mixing chamber. | 12-06-2012 |
20120298523 | METHOD AND ARRANGEMENT FOR PRODUCING METAL POWDER - In a method for producing metal powder, the first part of an acid-containing starting solution is fed on the anode side of an electrolytic cell as anolyte, to contact the anode and supply material containing yield metal, and a second part of the acid-containing starting solution, which also contains intermediary metal, is fed on the cathode side of the electrolytic cell, to contact the cathode as catholyte. Yield metal is oxidized and dissolved in the anolyte by leading electric current in the anode. The yield metal contained in the second part of the starting solution is reduced on the cathode side. Anolyte solution and catholyte solution are fed to a precipitating chamber for mixing the dissolved, oxidized yield metal and the second part of the starting solution containing reduced intermediary metal. | 11-29-2012 |
20120297929 | EXTRACTION PROCESS - A method for the selective recovery of uranium from a sulphate-based acidic aqueous solution of uranium containing iron and other metals by means of solvent extraction, in which the extractant used in the organic extraction solution is bis(2-ethylhexyl) phosphate and a liquid branched trialkyl phosphine oxide is the modifying agent. It is typical of the method that the uranium concentration in the feed solution is less than 50 mg/l and a reducing agent is introduced into the aqueous and/or extraction solution to prevent the permanent oxidation of iron to trivalent. In the method the majority of the extraction solution is circulated in a circuit consisting of the extraction stage and the storage tank and only a small part of the uranium-loaded extraction solution is routed to scrubbing and stripping. | 11-29-2012 |
20120269688 | APPARATUS FOR THE TREATMENT OF SOLIDS AND/OR GASES - An apparatus for the treatment of at least one of solids and gases includes a fluidized-bed reactor configured to fluidize the solids using fluidizing gas and to at least one of thermally and chemically treat the solids. A centrifugal separator is configured to separate the fluidizing gas and the solids from each other. A transfer duct connects the fluidized-bed reactor and centrifugal separator to each other. The transfer duct has a trapezoidal cross-section in a vertical direction and in a horizontal direction. The transfer duct branches off from the fluidized bed reactor with a cross-section having a horizontal dimension that is greater than a vertical dimension. The cross-section of the transfer duct expands downwards in the vertical direction from the fluidized-bed reactor to the centrifugal separator. The cross-section of the transfer duct tapers in the horizontal direction from the fluidized-bed reactor towards the centrifugal separator. | 10-25-2012 |
20120256360 | METALLURGICAL FURNACE - The invention relates to a metallurgical furnace, comprising a furnace body ( | 10-11-2012 |
20120255462 | PROCESS FOR PRODUCING GEOPOLYMERS - The present invention relates to the production of geopolymers from oil shale and/or mineral residues, which originate from the production of oil by means of oil shale. To use the residues left in the combustion of oil shale for the production of geopolymers, the oil shale and/or also mineral residues, which originate from the production of oil by means of shale are burnt and subsequently ground, before they are mixed with an alkaline activator and water and cured. | 10-11-2012 |
20120248664 | ARRANGEMENT FOR EVENING OUT POWDERY SOLID MATTER FEED OF A CONCENTRATE BURNER OF A SUSPENSION SMELTING OR SUSPENSION CONVERTING FURNACE - The object of the invention is an arrangement for feeding powdery solid matter into a concentrate burner ( | 10-04-2012 |
20120232810 | Three Dimensional Imaging of a Mass Flow - A method for determining the electrical conductivity of a mass flow in a three dimensional target volume including the steps of placing electrodes in a measuring connection with the target volume; supplying alternating voltage or alternating current to the tar-get volume between two of the electrodes and measuring the current or the voltage between the electrodes; determining a state space model which defines the relationships between the electrical conductivity, the voltage and the current in the target volume and the evolution of the electrical conductivity as a function of time; comparing the currents and/or the voltages according to the state space model with the supplied and the measured ones; and modifying the state space model to decrease any differences. The electrodes are placed substantially within one plane; and the state space model is determined so as to the time-dependent flow field of the mass flow within the target volume. | 09-13-2012 |
20120228811 | METHOD OF FEEDING FUEL GAS INTO THE REACTION SHAFT OF A SUSPENSION SMELTING FURNACE AND A CONCENTRATE BURNER - The invention relates to a method of feeding a fuel gas into the reaction shaft of a suspension smelting furnace and to a concentrate burner for feeding a reaction gas and fine solid matter into the reaction shaft of the suspension smelting furnace. In the method, fuel gas ( | 09-13-2012 |
20120211345 | INSTALLATION FOR PRODUCING A COAL CAKE SUITABLE FOR COKING - A method for producing a coal cake that is suitable for coking and for subsequent charging of a coking oven chamber. At least one vibrating station including a push-table vibrating machine with an oscillatorily mounted vibrating table is provided. A mould box is clamped to the vibrating table. The mould box is filled with granular raw coal material. A weight is placed on top of the mould box. The mould box is vertically oscillated while the weight presses from above into the mould box so as to mould a vibration-compacted coal block. The vibration-compacted coal block is pushed off the vibrating table, using an ejector, onto an underlying support. The vibration-compacted coal block is pushed on the underlying support by a length (x) of the vibration-compacted coal block successive to another vibration-compacted coal block. The vibration-compacted coal blocks are successively stacked so as to form the coal cake. The coal cake is introduced into the coking oven chamber using a transporting device. | 08-23-2012 |
20120204679 | METHOD OF CONTROLLING THE THERMAL BALANCE OF THE REACTION SHAFT OF A SUSPENSION SMELTING FURNACE AND A CONCENTRATE BURNER - The invention relates to a method of controlling the thermal balance of the reaction shaft of a suspension smelting furnace and to a concentrate burner for feeding reaction gas and pulverous solid mater into the reaction shaft of the suspension smelting furnace. In the method, endothermic material ( | 08-16-2012 |
20120200012 | METHOD OF USING A SUSPENSION SMELTING FURNACE, A SUSPENSION SMELTING FURNACE, AND A CONCENTRATE BURNER - The invention relates to a method of using a suspension smelting furnace and to a suspension smelting furnace and to a concentrate burner ( | 08-09-2012 |
20120180662 | CYCLONE FOR SEPARATING STICKY PARTICLES FROM GAS STREAMS - A cyclone for separating sticky particles from gas streams includes an inlet duct having an end in a direction of a particle outlet. The end has a flow cross-section including a triangular expansion that is formed laterally by a vertical of a cylindrical outer wall of the cyclone and by art outer boundary of the cyclone. An outer angle of inclination between the vertical and the outer boundary, proceeding from the end of the inlet duct, is reduced from 30° to 0° in a flow direction of gas streams. An immersion tube is disposed eccentrically in a direction of the inlet duct. | 07-19-2012 |
20120126493 | SEALING DEVICE - In a sealing device ( | 05-24-2012 |
20120124856 | METHOD AND STRAND SINTERING EQUIPMENT FOR CONTINUOUS SINTERING OF PELLETIZED MINERAL MATERIAL - In a method and equipment for continuous sintering of pelletized mineral material, a partition wall ( | 05-24-2012 |
20120103827 | METHOD FOR LEACHING CHALCOPYRITE CONCENTRATION - The invention relates to a method for leaching bulk concentrate of chalcopyrite-type by means of an aqueous solution containing sulphuric acid and an oxygen feed at atmospheric pressure and at a temperature between 75° C. and the boiling point of the solution. It is typical of the method that the particle size of the concentrate to be fed into leaching is in the region of 80% below 60-100 μm and that the concentrate is leached with an aqueous solution, the acid concentration of which is regulated to be around 20-90 g/l. | 05-03-2012 |
20120096913 | METHOD AND APPARATUS FOR PREPARING A MOTHER PLATE OF A PERMANENT CATHODE FOR AN ELECTROLYTIC PROCESS - The invention relates to a method and an apparatus for preparing a mother plate ( | 04-26-2012 |
20120093300 | ARRANGEMENT OF ANALYZER MEASURING WINDOW - The invention relates to an arrangement of a measuring window in a continuously operated X-ray analyzer ( | 04-19-2012 |
20120080382 | METHOD AND APPARATUS FOR REGENERATION OF EXTRACTION SOLUTION IN METAL EXTRACTION PROCESSES - The invention relates to a method and apparatus for restoring the extractive potential of organic hydroxyoxime-based extraction solution used in the recovery of metals by liquid-liquid extraction. The method is two-stage, in which an aqueous solution of hydroxylamine or some hydroxylamine compound is used in the reaction stage, and the removal of the undesirable compounds generated in the reaction occurs in the second stage by adsorption purification. The reaction stage and the adsorptive stage are carried out in a mixing tank. | 04-05-2012 |
20120074046 | FROTH FLOTATION METHOD AND AN APPARATUS FOR EXTRACTING A VALUABLE SUBSTANCE FROM A SLURRY - In a froth flotation method and apparatus an upwardly open circular trough ( | 03-29-2012 |
20120067740 | METHOD FOR CONCENTRATING DILUTE SULFURIC ACID AND AN APPARATUS FOR CONCENTRATING DILUTE SULFURIC ACID - A method for concentrating dilute sulfuric acid involves feeding dilute sulfuric acid through at least two electrolytic cells depolarized by sulfur dioxide, and through a cation conductive membrane separating the cathode and anode sides in the electrolytic cell. Also provided is an apparatus for concentrating sulfuric acid, wherein at least a first electrolytic cell is in fluid communication with a second electrolytic cell, and wherein a cation conductive membrane separates the cathode and anode sides in the electrolytic cells. | 03-22-2012 |
20120039721 | IMPELLER FOR MIXING SLURRY IN METALLURGICAL PROCESSES - The invention relates to a turbine-type high-power impeller, to be used for mixing slurry in hydrometallurgical process reactors. The impeller is formed of at least five blades, each of which blades comprises a front edge, trailing edge, root and tip; the roots of the impeller blades are permanently attached by a joint to the hub or axis of the impeller, so that the front edge of the impeller blade is straight, and the trailing edge is chamfered, in which case the blade is narrowed towards the tip, and the blade is provided with two longitudinal folds arranged in parallel with the front edge of the blade. | 02-16-2012 |
20120018376 | APPARATUS AND METHOD FOR REMOVING IMPURITIES IN CONNECTION WITH LIQUID-LIQUID EXTRACTION OF COPPER - The invention relates to an apparatus and method for removing molybdenum and other possible impurities from an organic copper-containing extraction solution in connection with the liquid-liquid extraction related to copper recovery. The removal of impurities occurs in one or several removal units built into the organic extraction solution storage tank. | 01-26-2012 |
20120014863 | PROCESS AND PLANT FOR PRODUCING METAL OXIDE FROM METAL SALTS - A process for producing metal oxide from metal salts includes cleaning a metal salt in a filter. After cleaning, the metal salt is dried in a drying apparatus. Steam is formed in the drying apparatus. The metal salt is preheated in at least one preheating stage. The metal salt is calcined to metal oxide in a fluidized-bed reactor. The metal oxide is cooled. The steam formed in the drying apparatus is recirculated into the filter. | 01-19-2012 |
20120000366 | WET GAS SCRUBBER - A wet gas scrubber is provided for removing at least one of solid and liquid particles from water-saturated gases with a Venturi zone adjustable with respect to the flow cross-section. The wet gas scrubber includes a fixed lower Venturi plate and a vertically adjustable upper Venturi plate disposed above the fixed lower Venturi plate. The Venturi plates are substantially parallel to one another and include corresponding segments configured to engage in each other. A plurality of Venturi channels are disposed between the Venturi plates and configured to guide a mixture of a gas to be cleaned and cleaning liquid droplets injected into a stream of the gas by a nozzle. The segments of the Venturi plates engage in each other while the Venturi channels are kept free. | 01-05-2012 |
20110318253 | METHOD FOR PURIFYING LITHIUM BICARBONATE - The invention relates to a method for purifying impure lithium bicarbonate by means of a cation exchange resin. In addition to solution purification by ion exchange, the treatment stages include the regeneration of impurity metals bound to the resin. Regeneration consists of washing the resin with water, elution with acid solution, washing with water, neutralisation with alkali solution and washing with water. It is characteristic of the method that neutralisation is performed with sodium hydroxide solution. | 12-29-2011 |
20110316205 | SUPPLY SYSTEM FOR SUSPENSION SMELTING FURNACE - A supply system for providing a suspension smelting furnace with constant and continuous feed is disclosed. The installation of the invention comprises intermediate storage bins for fine-grained feed, a feed rate controller for accurately controlling the feed rate of the fine-grained material, and a pneumatic conveyor for lifting the feed up to the top level of the suspension smelting furnace where the burner of the furnace is adapted. In the installation, the heavy constructions of the storage bins are located close to the ground level and the constructions around and on top of the furnace have been designed essentially lighter than in conventional solutions. | 12-29-2011 |
20110309029 | METHOD FOR REMOVING ARSENIC AS SCORODITE - The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crystalline scorodite. | 12-22-2011 |
20110303619 | METHOD AND ARRANGEMENT FOR SEPARATING TWO SOLUTIONS MIXED IN DISPERSION INTO TWO SOLUTION PHASES IN A LIQUID-LIQUID EXTRACTION SEPARATION CELL - The invention relates to a method and arrangement for separating two solutions mixed in dispersion into two solution phases in a liquid-liquid extraction separation cell ( | 12-15-2011 |
20110297606 | METHOD FOR FABRICATING DISCHARGE END CHUTE ARRANGEMENT OF A LIQUID-LIQUID EXTRACTION SETTLING TANK AND SAID CHUTE ARRANGEMENT - The subject of the invention is a method for fabricating the discharge end ( | 12-08-2011 |
20110284462 | METHOD AND ARRANGEMENT FOR SEPARATING TWO SOLUTIONS MIXED IN DISPERSION INTO TWO SOLUTION PHASES IN A LIQUID-LIQUID EXTRACTION SEPARATION CELL - The invention relates to a method and arrangement for separating two solutions mixed in dispersion into two solution phases in a liquid-liquid extraction separation cell ( | 11-24-2011 |
20110259737 | PERMANENT CATHODE - A permanent cathode that is to be used as electrode in the electro-refining and/or recovery of metals, such as copper, zinc, cobalt or nickel. The permanent cathode comprises a planar mother plate that is made of metal and comprises two sides. The mother plate comprises an edge, which at least partly surrounds the metal plate. The edge comprises a groove portion that is provided with a groove. The groove portion comprises at least one bridging section for joining together, over the groove portion of the edge of the metal plate at the at least one bridging section, the cathode metal halves, such as cathode copper halves, cathode zinc halves, cathode cobalt halves or cathode nickel halves, which are formed on the sides of the mother plate in the electro-refining of the metals. | 10-27-2011 |
20110252967 | METHOD AND ARRANGEMENT FOR REMOVING SOLID PARTICLES AND TAR COMPONENT FROM CARBON MONOXIDE GAS - A method and arrangement for removing solid particles and tar component from carbon monoxide gas. In the method, carbon monoxide gas is conducted from a ferroalloy smelting furnace ( | 10-20-2011 |
20110247987 | METHOD FOR THICKENING AND THICKENING APPARATUS - The invention relates to a method and apparatus for thickening liquids carrying suspended particles, such as slurry containing minerals, by using a thickening apparatus ( | 10-13-2011 |
20110210478 | METHOD AND EQUIPMENT FOR PROVIDING THE EDGE OF A STARTING SHEET WITH A DIELECTRIC STRIP - A device for providing the edge of a starting sheet of an electrode used in the electrolytic refining or recovery of metals with a dielectric part comprises a die space, in which the edge of the starting sheet of the electrode can at least partly be fitted, and a feeding device of the dielectric material for feeding the dielectric material into the die space. The device comprises changing members of the volume of the die space for pressing the dielectric material in the die space to that edge of the starting sheet of the electrode, which is at least partly fitted in the die space. | 09-01-2011 |
20110203340 | EQUIPMENT FOR THE STRAIGHTENING OF DEFORMED ELECTROLYSIS POTSHELLS, IN PARTICULAR FOR ALUMINIUM MOLTEN-BATH ELECTROLYSIS - In order for the straightening of deformed electrolysis potshells to provide operationally reliable equipment which makes it possible to straighten deformed potshell sidewalls even of different deformation resistance independently of one another, specifically both in the case of the potshell carrying structure and in the case of the potshell sheeting, according to the invention an elongate transportable straightening beam ( | 08-25-2011 |
20110198303 | METHOD AND APPARATUS FOR DISTURBING NETWORKED PULP - The present invention provides a method ( | 08-18-2011 |
20110195016 | PROCESS AND PLANT FOR PRODUCING CALCINE PRODUCTS - A process for producing calcine products includes dead roasting a metal sulfide concentrate having a low sulfur content. The concentrate is roasted in a circulating fluidized bed at a temperature of about 950 to 1050° C. A waste gas of the fluidized bed is passed through at least one of a recuperator and a Venturi drier so as to respectively provide at least one of a preheating of at least a portion of air fluidizing the fluidized bed and a drying of at least a portion of the concentrate to be roasted. The calcine product obtained in the fluidized bed with a sulfur content of less than 1 wt-% is provided for further processing. | 08-11-2011 |
20110186666 | MULTI-STAGE DISCHARGER FOR GRINDING MILLS - A pulp lifter assembly for a rotary grinding mill includes an outer pulp lifter having walls defining a pulp lifter chamber and an outlet opening for radially inward discharge of slurry from the pulp lifter chamber, and an inner discharger disposed radially inward of the outer pulp lifter and circumferentially offset from the outer pulp lifter. The inner discharger defines a passage for conveying slurry substantially radially inward. A transition discharger is disposed radially between the outer pulp lifter and the inner discharger. The transition discharger has a first wall bounding an interior space and a second wall dividing the interior space into first and second regions. The second wall includes a guide that bounds a channel connecting the outlet opening of the outer pulp lifter to the passage defined by the inner discharger. | 08-04-2011 |
20110180484 | SEPARATION DEVICE WITH DUAL DRIVES AND A METHOD OF REDUCING DONUTTING IN A SEPARATION DEVICE - The invention provides a separation device ( | 07-28-2011 |
20110163041 | METHOD FOR CONTROLLING THE DISTURBANCE OF NETWORKED PULP - The invention provides a method ( | 07-07-2011 |
20110127020 | METHOD FOR MANUFACTURING A COOLING ELEMENT AND A COOLING ELEMENT - A method for coating the base element of a cooling element used in connection with a metallurgical furnace or the like, said base element being mainly made of copper, at least partly with a metal coating involves a step wherein the metal coating is explosion welded to the base element of a cooling element mainly made of copper. A cooling element, particularly to be used in connection with metallurgical furnaces or the like, includes a base element mainly made of copper, in which base element there is arranged a cooling water channel system, said base element of the cooling element being at least partly coated with a metal coating. The metal coating is explosion welded to the base element that is mainly made of copper. | 06-02-2011 |
20110108235 | METHOD FOR MANUFACTURING A COOLING ELEMENT AND A COOLING ELEMENT - A method for manufacturing a cooling element for a metallurgical furnace, wherein there is arranged a frame element mainly made of copper and provided with water cooling channels; in the frame element, there are arranged fastening elements for connecting refractory bricks to the frame element; and refractory bricks are connected to the frame element by using fastening elements; and wherein the fastening elements are at least partly formed of elongate steel fastening strips; the method comprising fastening the elongate fastening steel strips to the frame element so that the elongate fastening steel strips together form in between them an open interspace, which is narrowed in a direction pointed away from the bottom of the open interspace; and arranging refractory bricks in the open interspace so that the refractory bricks are located at least partly in the open interspace. A cooling element to be used in connection with a metallurgical furnace or the like is made mainly of copper and includes water cooling channels. | 05-12-2011 |
20110090934 | SEALING DEVICE - A sealing device is arranged around a rod electrode extending vertically through an aperture made in the ceiling of an arc furnace and being vertically movable inside the furnace to prevent the access of gases from the furnace through the aperture to the atmosphere, and on the other hand to prevent air from flowing from the atmosphere into the furnace. The sealing device comprises a gas distribution chamber provided with an inlet channel for feeding essentially passive gas, such as nitrogen or air, into the gas distribution chamber. The sealing device also includes a slit nozzle encasing the electrode, through which nozzle a gas jet is arranged to be discharged from the gas distribution chamber towards the electrode in a direction that is at an angle with respect to the horizontal plane and has a slightly upwards inclined orientation, and that is, with respect to the furnace interior, pointed outwardly, so that the sealing is carried out owing to the effect of the created stagnation pressure. | 04-21-2011 |
20110079563 | IMPROVEMENTS IN FEEDWELLS - The invention provides several improvements in feedwells, one of which being a feedwell ( | 04-07-2011 |
20110073468 | METHOD FOR ARRANGING ELECTRODES IN AN ELECTROLYTIC PROCESS AND AN ELECTROLYTIC SYSTEM - In the method and system, a number of electrolytic cells are arranged as a cell group, which cells are separated by a number of partition walls; in each cell, a number of anodes and cathodes are arranged in an alternating order, so that in each cell, next to each anode, there is arranged a cathode, and so that in each cell, each individual anode is fitted in the same anode line with the anode of the adjacent cell, and in each cell, each individual cathode is fitted in the same cathode line with the cathode of the adjacent cell, and each anode is galvanically connected to at least one cathode of the adjacent cell. The flowing direction of the current passing in the cell group is deviated in different directions in order to make the current flow mainly in the direction of the cell group. | 03-31-2011 |
20110068520 | SYSTEM FOR DECREASING AMOUNT OF ORGANIC SOLUTION IN THE LIQUID-LIQUID EXTRACTION PROCESS - The invention relates to a system used in the liquid-liquid extraction of metals, enabling the amount of organic solution required in the various stages of extraction to be significantly reduced. In accordance with the invention, the settler unit of one step belonging to an extraction system is selected to function also as the organic solution storage and pumping tank. | 03-24-2011 |
20110067568 | APPARATUS AND METHOD FOR MECHANICAL DEAERATION - The invention provides an apparatus ( | 03-24-2011 |
20110054802 | METHOD AND ARRANGEMENT FOR MONITORING AND PRESENTING THE STATUS OF AN ELECTROLYTIC PROCESS IN AN ELECTROLYTIC CELL - The invention relates to an arrangement and method for monitoring and presenting the status of an electrolytic process in an electrolytic cell ( | 03-03-2011 |
20110034318 | PROCESS AND PLANT FOR THE HEAT TREATMENT OF FINE-GRAINED MINERAL SOLIDS - A process for heat treatment of fine-grained mineral solids includes passing fine-grained mineral solids through a flash reactor so as to contact the fine-grained mineral solids with hot gases in the flash reactor at a temperature of 450 to 1500° C. so as to obtain hot solids. The hot solids arc passed through a residence time reactor at a temperature of 500 to 890° C. The hot solids are withdrawn from the residence time reactor after a residence time of 1 to 600 minutes. A waste gas of the residence time reactor is recirculated to at least one of the flash reactor and a preheating stage. | 02-10-2011 |
20110013662 | PROCESS AND PLANT FOR THE THERMAL TREATMENT OF FINE-GRAINED SOLIDS - A process for at least one of a chemical and a physical treatment of fluidizable substances in a reactor. The process includes introducing a hot gas into an interior of the reactor through a gas supply tube and cooling at least one of the hot gas and the gas supply tube with a coolant. The cooling is performed by contacting the hot gas with the coolant so as to provide a temperature of a wall of the gas supply tube at least 50° C. lower than a temperature of the gas at an inlet of the gas supply tube facing away from the interior of the reactor. | 01-20-2011 |
20110011211 | METALLURGICAL PROCESS AND PLANT HEREFOR - A process for the production and/or treatment of at least one metal in a reactor includes discharging a waste gas stream via a waste gas conduit and after-treating the waste gas stream by supplying a cooling gas and/or a cooling gas mixture. The after-treating includes injecting the cooling gas and/or cooling gas mixture into the waste gas conduit on a side of the waste gas conduit facing the reactor, at a high velocity and substantially tangentially with respect to a main flow direction of the waste gas. A volume of the cooling gas and/or the cooling gas mixture injected into the waste gas conduit is adjusted so as to reduce a mixing temperature below a melting temperature of the molten particles and/or a condensation temperature of the vaporous constituents of the waste gas stream. | 01-20-2011 |
20100329300 | METHOD AND ARRANGEMENT FOR MEASURING AT LEAST ONE PHYSICAL MAGNITUDE, SUCH AS TEMPERATURE, FLOW OR PRESSURE OF THE COOLING FLUID FLOWING IN AN INDIVIDUAL COOLING ELEMENT CYCLE OF A COOLING ELEMENT IN A METALLURGICAL FURNACE - The invention relates to a method and arrangement for measuring at least one physical magnitude, such as temperature, flow or pressure of the cooling fluid flowing in an individual cooling element cycle ( | 12-30-2010 |
20100319253 | PROCESS AND PLANT FOR REFINING RAW MATERIALS CONTAINING ORGANIC CONSTITUENTS - A process for refining raw materials containing oil and/or bitumen includes supplying water and the raw materials to an expulsion stage and/or an expulsion stage and a downstream gasification stage to obtain solids containing non-evaporated fractions of heavy hydrocarbons and to expel hydrocarbonaceous vapour. The expelled hydrocarbonaceous vapour is supplied to a processing stage and is further processed to expel hydrocarbonaceous vapour to obtain processing stage products which are separated and withdrawn. The solids from the expulsion stage and/or the expulsion stage and the downstream gasification stage are introduced into a combustion stage. The non-evaporated fractions of heavy hydrocarbons are burned in the combustion stage to obtain hot solids which are recirculated from the combustion stage into the expulsion stage and/or the downstream gasification stage. An oxidizing atmosphere of the combustion stage is separated from an atmosphere of the expulsion stage and/or the downstream gasification stage using a blocking device. | 12-23-2010 |
20100314475 | TURBO PULP LIFTER - A pulp lifter for installation in a rotary grinding mill has a leading edge wall and a trailing edge wall with respect to rotation of the mill. The leading edge wall and the trailing edge wall define a pulp lifter chamber, and a grate allows slurry to pass to a radially outward collecting region of the pulp lifter chamber for removal from the mill by way of a radially inward discharge region of the pulp lifter chamber. In one embodiment, a gate is positioned between the collecting region and the discharge region, the gate being movable between an open position, in which the gate permits solid material to pass from the collecting region to the discharge region, and a closed position, in which the gate prevents return movement of solid material from the discharge region to the collecting region. | 12-16-2010 |
20100313475 | PROCESS FOR PLANT FOR REFINING RAW MATERIALS CONTAINING ORGANIC CONSTITUENTS - A process for refining raw materials containing oil and/or bitumen includes supplying the raw materials to a reactor. The reactor is operated under a pressure of from 0.001 to 1 bar and at a reactor temperature of from 300 to 1000° C. so as to volatize fuel gases and obtain solids and non-evaporated fractions of heavy hydrocarbons. The solids and non-evaporated fractions of heavy hydrocarbons are introduced into a furnace. The non-evaporated fractions of heavy hydrocarbons are burned in the furnace at a furnace temperature of from 600 to 1500° C. so as to obtain hot solids in the furnace. The hot solids are recirculated from the furnace into the reactor. An oxidizing atmosphere of the furnace is separated from an atmosphere of the reactor by a sealing device. | 12-16-2010 |
20100294715 | SETTLER ARRANGEMENT FOR LIQUID-LIQUID EXTRACTION, EQUIPMENT TO BE PLACED IN THE SETTLER OP LIQUID-LIQUID EXTRACTION AND METHOD FOR INSTALLING THE EQUIPMENT - Equipment to be placed in the settler ( | 11-25-2010 |
20100269636 | DIRECT REDUCTION APPARATUS AND PROCESS - An apparatus for reducing a metalliferous material in a fluidized bed includes a vessel for containing the fluidized bed, a mechanism for supplying the metalliferous material, a solid carbonaceous material, an oxygen-containing gas, and a fluidizing gas into the vessel for forming the fluidized bed in the vessel. The oxygen-containing gas supply mechanism includes one or more than one oxygen-containing gas injection lance having a lance tip with an outlet that is positioned for injecting the oxygen-containing gas in a downward flow into the vessel within a range of plus or minus 40° to the vertical. | 10-28-2010 |
20100263487 | PROCESS AND PLANT FOR PRODUCING CHAR AND FUEL GAS - A method for producing char and fuel gas includes degasifying a carbonaceous material with oxygen-containing gases in a fluidized bed reactor at a temperature of more than about 1000° C. and at a pressure of from about 1 bar to about 40 bar. A supply of oxygen within the fluidized bed reactor is adjusted so as to recover more than 60% of fixed carbon in the carbonaceous material in a char product, and an oxygen availability in a lower or bottom region of the fluidized bed reactor is less than 80% of an oxygen availability in an upper region of the fluidized bed reactor. | 10-21-2010 |
20100236636 | FLUID DISTRIBUTION SYSTEM - A system for distributing a fluid via a packing disposed in a container, the packing configured to have the fluid trickle from a top to a bottom thereof, includes at least one distributor member including a pressure conduit having at least one nozzle configured to discharge the fluid therethrough and a distributor channel adjoining the distributor member. A width of the distributor channel does not substantially exceed a diameter of the distributor member. The distributor channel defines at least one outlet slot disposed at a lower end of the distributor channel. The at least one outlet slot has a specified width and is configured to discharge the fluid from the distributor channel to the packing via a guide member. The distributor channel is configured to receive the fluid discharged from the at least one nozzle so as to provide a specified level of the fluid in the distributor channel. The distributor channel forms a ventable chamber above the specified fluid level. The ventable chamber is configured to maintain a pressure corresponding to a pressure in the container in which the packing is disposed. | 09-23-2010 |
20100229687 | METHOD AND MIXER APPARATUS FOR MIXING GAS INTO SLURRY IN A CLOSED REACTOR - The mixer apparatus accordant with the invention includes a closed reactor, at least two mixers at different heights, which are on the same shaft, a gas feed pipe below the lower mixer and baffles. The blades of the mixers are mostly rectangular in shape and a minimum of six in number. The angle of inclination of the blades of the lower mixer is around 50-70° and that of the upper mixer around 25-35°. The number of baffles is at least six and their range around 20% of the reactor diameter. The invention is focused also the corresponding method. | 09-16-2010 |
20100209320 | SUPPORT RING FOR ACCOMMODATING A PLATE-LIKE ELEMENT IN A VESSEL - A support ring for accommodating a plate-like element in a vessel includes a bracket disposed on a wall of the vessel and configured to support the plate-like element, the bracket having an upper supporting surface inclined downward relative to horizontal. | 08-19-2010 |
20100207307 | CONCENTRATE BURNER - A concentrate burner for feeding a pulverous concentrate mixture and reaction gas into the reaction shaft ( | 08-19-2010 |
20100187191 | THICKENING APPARATUS AND METHOD FOR THICKENING - A thickening apparatus ( | 07-29-2010 |
20100187161 | PROCESS AND PLANT FOR REFINING OIL-CONTAINING SOLIDS - For refining oil-containing solids, in particular oil sand or oil shale, there is proposed a process with the following steps:
| 07-29-2010 |
20100183894 | METHOD FOR COATING A CONSTRUCTION MATERIAL WITH A FUNCTIONAL METAL AND THE PRODUCT MANUFACTURED BY THE METHOD - A method for coating a construction material made of metal alloy with a functional metal. The functional metal is deposited electrolytically on the surface of the construction material selectively so that the deposition occurs on the grain boundaries of the construction material and other points of discontinuity. The invention also relates to a construction material product, which is selectively coated with a functional metal. | 07-22-2010 |
20100180727 | METHOD FOR THE PRODUCTION OF METAL POWDER - The invention relates to a method for leaching a material containing a valuable metal and precipitating the valuable metal as a fine-grained powder by changing the electrochemical potential of an intermediary metal in the solution. In the leaching stage the intermediary metal or substance of the electrolyte solution is at a high degree of oxidation and in the precipitation stage another electrolyte solution is routed into the solution, in which the intermediary metal or substance is at a low degree of oxidation. After the precipitation stage the solution containing the intermediary is routed to electrolytic regeneration, in which part of the intermediary is oxidised in the anode space back to a high potential value and part is reduced in the cathode space to its low value. | 07-22-2010 |
20100176072 | Gasket Distributor - A flange joint for connecting two objects in a fluid connection so that fluid can flow between the objects. The flange joint has a gasket and the gasket is installed in the flange joint. The flange joint has at least one channel for feeding additional fluid from outside of the flange joint through the gasket into fluid flowing between the two objects. | 07-15-2010 |
20100155309 | Method for Separating Particles in Hydrous Slurry and a Hindered-Bed Separator - A method for separating particles in hydrous slurry comprises connecting at least one teeter water pipe of a teeter water distributor means of a hindered-bed separator in fluid connection with a teeter water discharging means, and discharging teeter water from the at least one teeter water pipe that is in fluid connection with the teeter water discharging means to the teeter water discharging means. | 06-24-2010 |
20100118641 | METHOD AND APPARATUS FOR CONTROLLING A STREAM OF SOLIDS - A method for controlling at least one of a level of solids and an inventory of solids in a solids tank includes withdrawing a stream of solids from the solids tank via a downer. The stream of solids withdrawn from the solids tank is fluidized at a bottom of the downer by supplying a conveying gas so as to convey the withdrawn stream of solids upward via a riser branching off from the downer, a size of the conveyed stream of solids being adjusted by the supplying of the conveying gas. At least one of the level and the inventory of the solids in the solids tank is used as an adjustment variable of a control circuit and a volume flow of the conveying gas is used as an actuating variable of the control circuit. | 05-13-2010 |
20100108618 | THICKENER AND METHOD FOR THICKENING - The invention relates to an apparatus and a method for thickening liquids carrying suspended particles, such as a slurry containing minerals. The thickening apparatus comprises a tank ( | 05-06-2010 |
20100101337 | Method of and Equipment for Preparing an Analysis Sample - The invention relates to a method of and equipment for preparing an analysis sample ( | 04-29-2010 |
20100078319 | METHOD OF MANUFACTURING A CATHODE PLATE, AND A CATHODE PLATE - A method of manufacturing a cathode plate ( | 04-01-2010 |
20100077889 | METHOD TO ENHANCE CLARIFICATION IN A MIXING REACTOR AND SAID MIXING REACTOR - The invention relates to a mixing reactor for mixing a liquid and pulverous solid, clarification the solution that is formed and discharging the clarified solution from the mixing reactor, in the lower section of which a fluidized bed is formed. The invention also relates to a method for mixing a liquid and pulverous solid into each other in a fluidized bed, for clarification the solution that is formed and for discharging the clarified solution from the mixing reactor. | 04-01-2010 |
20100074805 | FLUIDIZED BED METHOD FOR THE HEAT TREATMENT OF SOLIDS CONTAINING TITANIUM - A plant for the heat treatment of solids containing titanium includes a fluidized bed reactor. The reactor includes at least one gas supply tube being at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is located, and a mixing chamber being located above the upper orifice region of the gas supply tube. The gas flowing through the gas supply tube entrains solids from the stationary annular fluidized bed into the mixing chamber when passing through the upper orifice region of the gas supply system. The plant further includes a solids separator downstream of the reactor. The solids separator includes a solids conduit leading to the annular fluidized bed of the reactor. | 03-25-2010 |
20100071555 | METHOD AND APPARATUS FOR FILTERING PROCESS GAS - The invention relates to a method and an apparatus for filtering process gas created in the ferroalloy smelting process, i.e. carbon monoxide gas, in order to essentially reduce the content of solids in the gas. In the filtering unit ( | 03-25-2010 |
20100061922 | METHOD FOR PRODUCING HYDROGEN AND SULPHURIC ACID - The invention relates to a method for producing gaseous hydrogen and strong sulphuric acid (97-100 wt-%) simultaneously from sulphur dioxide gas and water. Sulphur dioxide gas stream is divided into two separate sub-streams, the first sub-stream is routed for water decomposition in a partial thermochemical cycle of the hydrogen and sulphuric acid production and the second sub-stream is fed to the oxidation of the sulphur dioxide to sulphur trioxide. | 03-11-2010 |
20100059415 | FROTH FLOTATION METHOD AND APPARATUS, A FROTH FLOTATION METHOD AND APPARATUS FOR EXTRACTING BITUMEN FROM A SLURRY OF WATER AND OIL SAND, AND USE OF THE APPARATUS - A froth flotation method and apparatus for extracting a valuable substance from a slurry comprising a mixture of solid phase, liquid phase and said substance. A gas dispersing mechanism ( | 03-11-2010 |
20100044933 | METHOD AND PLANT FOR THE HEAT TREATMENT OF SOLIDS CONTAINING IRON OXIDE - A plant for the heat treatment of solids containing iron oxide includes a fluidized bed reactor. The reactor includes at least one gas supply tube at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is located, and a mixing chamber being located above the upper orifice region of the at least one gas supply tube. The gas flowing through the at least one gas supply tube entrains solids from the stationary annular fluidized bed-into the mixing chamber when passing through the upper orifice region of the at least one gas supply tube. | 02-25-2010 |
20100040512 | METHOD AND PLANT FOR THE HEAT TREATMENT OF SOLIDS CONTAINING IRON OXIDE - A plant for the heat treatment of solids containing iron oxide. The plant includes a reactor including a fluidized bed reactor. The reactor includes a gas supply system disposed in the reactor, a stationary annular fluidized bed which at least partly surrounds the gas supply system, and a mixing chamber. The gas supply system is configured so that gas flowing through the gas supply system entrains solids from the stationary annular fluidized bed into the mixing chamber. | 02-18-2010 |
20100018907 | EQUIPMENT AND METHOD FOR FLOTATING AND CLASSIFYING MINERAL SLURRY - The invention relates to an equipment and method for flotating mineral slurry ( | 01-28-2010 |
20100012501 | METHOD FOR COATING A COOLING ELEMENT - The invention relates to a method for coating a cooling element ( | 01-21-2010 |
20090274589 | PROCESS AND PLANT FOR PRODUCING METAL OXIDE FROM METAL COMPOUNDS - A plant for producing metal oxide from metal compounds includes a fluidized-bed reactor in which the metal compounds are heated by a combustion of a fuel to produce metal oxide. The fluidized-bed-reactor reactor includes at least one gas supply tube at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is disposed, and a mixing chamber disposed above an orifice region of the gas supply tube. A gas flowing through the gas supply tube entrains solids from the stationary annular fluidized bed when passing through the orifice region. | 11-05-2009 |
20090158894 | METHOD FOR RECOVERING GOLD - The invention relates to a method for recovering gold in connection with the hydrometallurgical production of copper from a waste or intermediate product containing sulphur and iron that is generated in the leaching of the copper raw material. The recovery of both copper and gold occurs in a chloride environment. The gold contained in the waste or intermediate is leached by means of divalent copper, oxygen and alkali bromide in a solution of copper (II) chloride and alkali chloride, in conditions where the oxygen-reduction potential is a maximum of 650 mV and the pH a minimum of 0.5. The bromide accelerates the dissolution of the gold. | 06-25-2009 |
20090152777 | METHOD FOR MANUFACTURING A MIXER-SETTLER AND A MIXER-SETTLER - The invention relates to a method for manufacturing a mixer-settler used in hydrometallurgical metal processes, such as liquid-liquid extraction, and to a mixer-settler structure where chemically resistant material, such as plate-like wall elements made of reinforced plastic, is used. | 06-18-2009 |
20090126530 | METHOD AND EQUIPMENT FOR TREATING PROCESS GAS - The invention relates to a method for treating solids-containing process gas in a suspension smelting furnace, comprising directing the process gas from the reaction shaft of the suspension smelting furnace to a lower furnace and, further, through a raised shaft to a waste heat boiler to cool the process gas, whereby, through one or more gas nozzles placed on the lower furnace top wall, oxidizing gas is fed into the process gas flowing in the lower furnace, whereby the amount of oxidizing gas is adjusted during the process so that the amount of sulphides contained in the solid matter of the process gas that is directed to the waste heat boiler is minimized. The invention also relates to the equipment. | 05-21-2009 |
20090078723 | LAUNDER FOR CASTING MOLTEN COPPER - The invention relates to a launder construction for the conveyance of molten metal. The metal flows in the lower part of the launder construction in a channel defined by a refractory mass, the launder being heat-insulated so that, in operating conditions, the metal forms a solid zone in the porous refractory mass. The essential features of the launder construction include a cover part that is provided with electrical resistors, ensuring that the metal remains melted and the launder sufficiently hot throughout the process, and a gas burner that prevents the metal from cooling under the effect of the gas flowing in the launder channel. | 03-26-2009 |
20090078086 | METHOD FOR RECOVERING COPPER FROM A COPPER SULPHIDE ORE - The invention relates to a method whereby copper is recovered from a copper sulphide ore containing pyrite. According to the method the ore is ground and leached into a solution containing sulfuric acid in atmospheric conditions by means of trivalent copper. As the copper sulphide leaches out, the trivalent iron is reduced to divalent and is oxidized back to trivalent by means of oxygen during leaching. Leaching is carried out in a closed reactor, where the undissolved gas rising from the solution in the supper section of the reactor is circulated back into the suspension of solution, solids and gas. leaching is performed in the presence of both divalent and trivalent iron and preferably with the dissolved copper acting as a catalyst to promote leaching. The conditions are adjusted to be such that the pyrite of the ore essentially does not dissolve. | 03-26-2009 |
20090068088 | PROCESS AND APPARATUS FOR THE COMBUSTION OF SULFUR - A process for a combustion of sulfur with an oxygen-containing gas to produce sulfur dioxide. The process includes introducing the sulfur and the oxygen-containing gas to a furnace. The sulfur is evaporated and subsequently a portion of the sulfur is oxidized to sulfur dioxide under sub-stoichiometric conditions in a first portion of the furnace. The sulfur dioxide formed in the first furnace portion is introduced together with any unoxidized sulfur to a second portion of the furnace which is disposed adjacent to the first furnace portion. The sulfur dioxide and unoxidized sulfur are subjected to post-combustion with the oxygen-containing gas in an inlet of a downstream waste heat boiler. | 03-12-2009 |
20090025903 | ARRANGEMENT AND METHOD FOR COOLING A SOLUTION - The invention relates to cooling equipment for cooling liquid, comprising a cooling tower that is mainly cylindrical in the vertical direction, in which case the cooling air feed equipment and the exhaust air discharge equipment are arranged, with respect to the cooling tower, so that both the cooling air flowing direction from the inlet aperture to the cooling space and the exhaust air flowing direction from the discharge equipment is horizontal and parallel to the tangent of the outer surface of the cooling tower. The invention also relates to a method for cooling liquid. | 01-29-2009 |
20090022639 | Method for the recovery of valuable metals and arsenic from a solution - The invention relates to a method for the treatment of material containing at least one valuable metal and arsenic to form a valuable metal-depleted scorodite sediment and a pure aqueous solution to be discharged from the process. According to the method, the valuable metals are first removed from the material to be treated and then arsenic precipitation from the solution is performed in two stages. By means of the method, the aim is to obtain as low a valuable metal content as possible in the scorodite sediment that will be formed. Likewise, the arsenic and valuable metal content of the aqueous solution that is formed during arsenic precipitation also remains so low that the water can be released into the environment. | 01-22-2009 |
20090017409 | EQUIPMENT AND METHOD FOR HEATING GAS IN CONNECTION WITH SINTERING - The invention relates to equipment for heating gas in connection with continuous sintering in gas channels placed above a strand, the gas channels comprising at least a wall and at least two gas units, the gas coming from the gas units being in contact with the material on the strand, whereby at least one burner unit is arranged in at least one of the gas channels, being arranged as part of the gas channel, the burner unit comprising at least one separate combustion space arranged on the wall of the gas channel. The invention also relates to a method for heating the gas. | 01-15-2009 |
20080307902 | Method for Defining Element Content and/or Mineral Content - The invention relates to a method for defining particle and/or mineral content in real time in a mineral separation process from finely divided particle material flowing either in solid or slurry-like form, so that from the particle material, there is extracted a representative sample, which sample is then subjected to grain size analysis, on the basis of which there is calculated the element and/or mineral content of the particle material. | 12-18-2008 |
20080272525 | Cooling Element and Method for Manufacturing the Same - The invention relates to a cooling element to be used in the structure of a pyromettalurgical reactor used in the manufacturing of metals, which cooling element comprises a housing element mainly made of copper, provided with a channel system for the cooling medium circulation, made of pipe that is mainly made of copper; on the outer surface of the pipes forming the channel system, there is arranged a coating that has a lower melting point than the material of the housing element and the pipe. The invention also relates to a method for manufacturing the cooling element. | 11-06-2008 |
20080271572 | Method for Recovering Rare Metals in Zinc Leaching Process - Sulphidic zinc concentrate usually also includes small amounts of rare metals such as indium and gallium. If the content of these metals in the raw material is sufficiently high, their recovery may be economically worthwhile. In the method according to the invention the recovery of indium and other desirable rare metals takes place in a zinc leaching process, in which at least part of the sulphidic concentrate is leached directly without roasting. | 11-06-2008 |
20080241024 | Method for Leaching Metal Sulphide Minerals - The invention relates to a method for the sulphate-based leaching of metal sulphide minerals, such as chalcopyrite, CuFeS | 10-02-2008 |
20080237036 | Method for Forming an Electrocatalytic Surface on an Electrode and the Electrode - The invention relates to a method of forming an electrocatalytic surface on an electrode in a simple way, in particular on a lead anode used in the electrolytic recovery of metals. The catalytic coating is formed by a spraying method which does not essentially alter the characteristics of the coating powder during spraying. Transition metal oxides are used as the coating material. After the spray coating the electrode is ready for use without further treatment. The invention also relates to an electrode onto which an electrocatalytic surface is formed. | 10-02-2008 |