Class / Patent application number | Description | Number of patent applications / Date published |
209164000 | Processes | 82 |
20080230447 | Method and Apparatus For Froth Washing in Floatation - A method and apparatus for introducing wash water into a flotation froth in a flotation separation system, where the wash water is injectioned into the froth in the form of a horizontal sheet of water. The sheet is typically formed by impinging a downwardly directed liquid jet issuing from a nozzle onto a horizontal plate or disc where it changes direction and travels radially outwards as an axi-symmetric planar liquid jet or sheet. The depth of the disc can be adjusted by a support rod. Other embodiments are described where the horizontal sheet is ejected through a horizontal slit, or where the sheet of wash water is rectangular rather than axi-symmetric. | 09-25-2008 |
20080251427 | Flotation Separation Device and Method - A flotation separation system is provided for partitioning a slurry that includes a hydrophobic species which can adhere to gas bubbles formed in the slurry. The flotation separation system comprises a flotation separation cell that includes a sparger unit and a separation tank. The sparger unit has a slurry inlet for receiving slurry and a gas inlet to receive gas with at least enough pressure to allow bubbles to form in the slurry within the sparger unit. The sparger unit includes a sparging mechanism constructed to disperse gas bubbles within the slurry. The sparging mechanism sparges the gas bubbles to form a bubble dispersion so as to cause adhesion of the hydrophobic species to the gas bubbles substantially within the sparger unit while causing a pressure drop of about 10 psig or less across the sparging mechanism. The sparger unit includes a slurry outlet to discharge the slurry and the bubble dispersion into the separation tank. | 10-16-2008 |
20080296206 | Process and device for aerating suspensions - The disclosure relates to a process and device for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions which includes a primary and secondary stage. In order to improve ash removal, a washing process is interposed between the primary and secondary stages. | 12-04-2008 |
20080308466 | Mineral Recovery from Ore - A metal or mineral compound collector for use in a froth flotation process so as to recover one or more desired minerals or metals; the collector comprising a functional group attached to a carbon chain; the functional group being a nitrile and the said chain having ( | 12-18-2008 |
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 |
20100051515 | APPARATUS AND METHOD FOR EFFICIENT PARTICLE TO GAS BUBBLE ATTACHMENT IN A SLURRY - The present invention relates to an apparatus and a process for efficient hydrophobic particles to gas bubble attachment in a slurry is provided. The process comprises: tangentially introducing a slurry stream into a cylindrical chamber having a cylindrical inner wall with sufficient volume and pressure to develop a vortex in the flowing slurry; introducing gas into the flowing slurry during at least a portion of its travel in the chamber, the gas being introduced orthogonally to the stream through means located at the chamber inner wall and for developing gas bubbles which move into the slurry. The apparatus comprises of: a cylindrical chamber having a cylindrical inner wall, the chamber being oriented in any direction, enclosed at both ends, and with an entry port to introduce the stream of slurry to develop a spiral flow of the stream along the chamber inner wall toward the output end, a porous wall to permit the introduction of gas orthogonally into the stream to develop gas bubbles within the stream, and an exit port to discharge the mixture of slurry and gas bubbles. | 03-04-2010 |
20100181234 | PROCESS AND APPARATUS FOR ADSORPTIVE BUBBLE SEPARATION - Process and apparatus are described for adsorptive bubble separation of hydrophobic particles from liquid dispersions. The process may be used to treat the gas/liquid dispersion after it has been introduced from two or more ducts near the perimeter or from a central duct of the separation vessel. When the gas-liquid-particle dispersion is introduced from a central duct, the rising bubbles are directed by, e.g., a baffle toward the perimeter of the apparatus, where they rise. At the liquid surface, bubbles with attached hydrophobic materials form a floating froth layer, which is directed toward a central froth collection launder. Rising froth at the perimeter pushing the froth bed into the reduced area of the center encourages further coalescence of the bubbles and increases liquid drainage from the froth, thus leading to concentration of the collected materials without the need for complex equipment geometry. Also disclosed is an improvement for froth flotation processes comprising using a vacuum to pull froth and/or collapsed froth into and through the froth collection launder and froth drain line. This improvement assists froth collection because froth can be pulled by suction through the collection system more easily than it can be drained by gravity. | 07-22-2010 |
20100193408 | METHOD AND APPARATUS FOR FLOTATION IN A FLUIDIZED BED - Separation of hydrophobic particles from a mixture of particles in a fluid is performed by providing a fluidized bed as a relatively non-turbulent contacting mechanism in a flotation cell incorporating a settling chamber located immediately above the fluidized bed. Hydrophobic particles attach to bubbles in the fluidized bed and rise to the interface with the settling chamber where non-hydrophobic particles flow over the lip of an internal launder and are removed as tailings at. The hydrophobic particles attached to bubbles float upwardly in the relatively placid settling chamber where unwanted gangue can fall back to interface. The bubbles form a froth layer at the upper surface of the settling chamber, and flow over the launder lip carrying the hydrophobic particles. An operation of the apparatus is kept stable by recirculating fluid from the settling chamber via pip and pump to mix with new feed entering at duct. | 08-05-2010 |
20100230326 | OIL SANDS FLOTATION - An oil sands flotation circuit wherein a feed stream is fed to a bank comprising at least one rougher flotation cell producing a rougher concentrate stream and a rougher tailings stream, said rougher concentrate stream being fed to a bank comprising at least one cleaner flotation cell producing a cleaner concentrate stream and a cleaner tailings stream. | 09-16-2010 |
20100276342 | METHOD OF FROTH FLOATION CONTROL - A method of controlling operation of a froth floatation cell for separating substances comprises introducing gas into liquid in the cell, creating a froth controlling gas flow rate into the cell in order to maximise gas recovery for the cell. | 11-04-2010 |
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 |
20130140218 | FROTH FLOTATION AND APPARATUS FOR SAME - A flotation cell and a method of froth flotation. The flotation cell comprises a first vessel portion and a second vessel portion. The first vessel portion has a feed slurry input, an agitator and a gas input located in or operatively connected thereto. The first vessel portion is a mechanically agitated pressure vessel and acts as a particle collection unit. The second vessel portion has a tailings output and a froth discharge operatively connected thereto. The second vessel portion is hydraulically connected to the first vessel portion and receives agitated slurry and gas from the first vessel portion. The second vessel portion acts as a bubble disengagement unit. | 06-06-2013 |
20130153472 | APPARATUS AND METHOD FOR EFFICIENT PARTICLE TO GAS BUBBLE ATTACHMENT IN A SLURRY - The present invention relates to an apparatus and a process for efficient hydrophobic particles to gas bubble attachment in a slurry is provided. The process comprises: tangentially introducing a slurry stream into a cylindrical chamber having a cylindrical inner wall with sufficient volume and pressure to develop a vortex in the flowing slurry; introducing gas into the flowing slurry during at least a portion of its travel in the chamber, the gas being introduced orthogonally to the stream through means located at the chamber inner wall and for developing gas bubbles which move into the slurry. The apparatus comprises of: a cylindrical chamber having a cylindrical inner wall, the chamber being oriented in any direction, enclosed at both ends, and with an entry port to introduce the stream of slurry to develop a spiral flow of the stream along the chamber inner wall toward the output end, a porous wall to permit the introduction of gas orthogonally into the stream to develop gas bubbles within the stream, and an exit port to discharge the mixture of slurry and gas bubbles. | 06-20-2013 |
20130193036 | PROCESS AND APPARATUS FOR ADSORPTIVE BUBBLE SEPARATION - Process and apparatus are described for adsorptive bubble separation of hydrophobic particles from liquid dispersions. When a gas-liquid-particle dispersion is introduced into a separation vessel, a baffle directs the rising bubbles toward the perimeter of the apparatus. At the liquid surface, bubbles with attached hydrophobic materials form a floating froth layer, which is directed toward a froth collection launder. Also disclosed is an improvement for froth flotation processes comprising using a vacuum to pull froth and/or collapsed froth into and through the froth collection launder and froth drain line. | 08-01-2013 |
20130299394 | METHOD AND APPARATUS FOR FROTH FLOTATION CONTROL - The invention provides a method of controlling operation of a froth flotation cell, the method comprising: introducing gas into a liquid in the cell, thereby to create a froth on the surface of the liquid, the froth having a depth from the surface of the liquid to an overflow point at which the froth overflows and leaves the cell; and controlling the froth depth to optimise the gas recovery with respect to the froth depth. Optimisation of the gas recovery with respect to the froth depth leads to the recovery of a froth concentrate of both high grade and high product recovery. | 11-14-2013 |
20130341251 | FLOTATION DEVICE, METHOD FOR OPERATING THE FLOTATION DEVICE AND USE THEREOF - A flotation device for separating off a valuable mineral from a suspension, has a housing having a flotation chamber, a foam collector for removing a foam product formed in an upper region of the flotation chamber, a feed arrangement for feeding gas and/or suspension into the flotation chamber, an adjustable orifice via which the flotation chamber is horizontally divided into an upper part and a lower part and an open internal diameter of the flotation chamber is locally avoidable. The orifice is arranged completely in a suspension region of the flotation chamber. A measuring arrangement determines a variable in the operation of the flotation device. A control appliance connected to the arrangement automatically adjusts the orifice in dependence on the at least one state variable. | 12-26-2013 |
20140001102 | FLOTATION DEVICE COMPRISING A FLUID DISTRIBUTION ELEMENT FOR GENERATING A FLOW THAT IS DIRECTED AT THE FOAM COLLECTING UNIT | 01-02-2014 |
20140144814 | USE OF QUATERNARY AMMONIUM COMPOUNDS AS COLLECTORS IN FROTH FLOTATION PROCESSES - The present invention relates to the use of a polymeric quaternary ester product as a collector in a froth flotation process, to a method for froth flotation utilizing the polymeric quaternary ester, to the polymeric quaternary ester as such, and to methods for the production of the polymeric quaternary ester. | 05-29-2014 |
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 |
20140209517 | DISPERSION NOZZLE, FLOTATION MACHINE EQUIPPED THEREWITH, AND METHOD FOR OPERATING SAME - A dispersion nozzle for dispersing a liquid with a gas, has a gas feed nozzle and a tubular mixing arrangement which has an inlet zone for the gas and the liquid and an outlet zone for a gas/liquid mixture. The mixing arrangement adjoins the gas feed nozzle. The gas feed nozzle is tapered in the direction of the mixing arrangement and opens into the inlet zone. The mixing arrangement has at least one liquid intake opening in the inlet zone. In the inlet zone a ratio of a diameter DG of a gas outlet opening of the gas feed nozzle and an internal diameter DM of the mixing arrangement is in the range from 1:3 to 1:5. A gas regulating valve meters a quantity of the gas being supplied with the gas feed nozzle. The dispersion nozzle may be used in a flotation machine. | 07-31-2014 |
20150096925 | COLLECTOR COMPOSITIONS AND METHODS FOR MAKING AND USING SAME - Collector compositions and methods for making and using same to purify one or more crude materials are provided. The collector composition can include one or more amidoamines having the chemical Formula I and one or more amines having the chemical Formula IV, where a weight ratio of the amidoamine to the amine can be about 99:1 to about 1:99. | 04-09-2015 |
20160051993 | FROTH FLOTATION SEPARATION AND ANALYSIS - A method of separating heavy mineral particles, such as zircon, monazites, xeno time etc., from a sample of quartz crystal powder, comprises the steps of:
| 02-25-2016 |
209165000 | Preferential | 6 |
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 |
20130306525 | FROTH FLOTATION CONTROL - A system and method utilize model-based control of a froth flotation process for concentrating a desired target mineral from ground ore. The system and method exploit real time information about a surface tension of a pulp or flotation solution including the minerals. The surface tension represents exemplary additional information about the surface chemistry in the flotation process, and as such enables a refinement of a pulp model used in control of the flotation process. Ultimately, operational efficiency of a froth flotation plant is increased. | 11-21-2013 |
20130341252 | Method and Apparatus for Contacting Bubbles and Particles in a Flotation Separation System - A flotation separation apparatus for separating particles in suspensions, feeds slurry containing the particles through an inlet into a contactor where gas is fed through an inlet to mix with the slurry, for example in a downwardly plunging jet, to form a gas-liquid bubbly two-phase mixture under pressure from an outlet restriction in a throttling duct. The mixture is passed through a flow manipulator configured to induce a high energy dissipation rate, for example by way of a Shockwave formed in a diverging section of the throttling duct reducing the size of the bubbles and brining those bubbles into intimate contact with particles in the mixture which is released into a separation cell where a flow manipulating draft tube is provided to reduce turbulence in the mixture. Alternative apparatus and methods for inducing the high energy dissipation rate and for reducing turbulence in the mixture are also described and claimed. | 12-26-2013 |
20140076787 | Suspended Marine Platform - A method and apparatus in accordance with the present invention comprising a decomposable compound such as hydrogen peroxide as a primary additive to generate bubbles within a fluid medium such as an aqueous slurry of tar sands. The size range of bubbles, density (number per unit volume) of bubbles, and rate of in situ generation of bubbles are controlled by controlling process variables including but not limited to temperature, concentration of decomposable compound, residence time, pressure, viscous shear, ratio of water to solids, pH of the slurry, shape of the separation vessel, and addition of one or more secondary process additives. | 03-20-2014 |
20140102949 | FLOTATION OF PARTICLES BY CHEMICALLY-INDUCED SPARGING OF BUBBLES - A method and apparatus in accordance with the present invention comprising a de-composable compound such as hydrogen peroxide as a primary additive to generate bubbles within a fluid medium such as an aqueous slurry of tar sands. The size range of bubbles, density (number per unit volume) of bubbles, and rate of in situ generations of bubbles are controlled by controlling process variables including but not limited to temperature, concentration of decomposable compound residence time, pressure, viscous shear, ratio of water to solids, pH of the slurry, shape of the separation vessel, and addition of one or more secondary process additives. | 04-17-2014 |
20140110311 | METHOD AND APPARATUS FOR FROTH FLOTATION CONTROL - A method of controlling operation of a froth flotation cell comprises introducing gas into a liquid in the cell, thereby to create a froth on the surface of the liquid, which froth overflows and leaves the cell at an overflow point, wherein the froth has a froth height from the level of the overflow point to the upper surface of the froth, measuring values of the froth height for two values of gas flow rate into the cell, measuring values the velocity at which the froth overflows at the overflow point for two values of gas flow rate into the cell, calculating a gas flow rate into the cell that optimises gas recovery, by treating the measured values of froth height and measured values of froth velocity independently, and setting the gas flow rate into the cell to be the calculated flow rate into the cell that optimises gas recovery. | 04-24-2014 |
209166000 | With modifying agents | 54 |
20080197053 | FROTH FLOTATION PROCESS WITH pH MODIFICATION - This invention relates to the pH modifier in alkaline froth flotation processes to treat oxide and semi-soluble salt ores, such as phosphates, sulfates, carbonates and halides, to increase the recovery while generally maintaining or improving selectivity, thus the grade of desired minerals. The invented pH modifier is used to replace traditional alkaline pH modifiers—hydroxides, carbonates and bicarbonates, such as sodium hydroxide, sodium carbonate, lime and ammonia in anionic flotation processes. The pH modifier is aqueous solution, comprised of combinations of sodium hydroxide, sodium carbonate, and sodium silicate, along with sulfonated surfactant products, such as sulfonated petroleum oil, fatty acids, alkylates, ethoxylated alcohol ethers, and also sulfosuccinamates; and anionic polymers. The pH modifier is also used as a promoter for anionic collectors and as a depressant for gangue minerals. | 08-21-2008 |
20080277319 | FINE PARTICLE CARBON DIOXIDE TRANSFORMATION AND SEQUESTRATION - An energy efficient method and system for producing micron-sized particles and transforming and sequestering carbon dioxide into mineral carbonates is described, along with uses for the mineral carbonates produced in the process. | 11-13-2008 |
20080308467 | METHYL ISOBUTYL CARBINOL MIXTURE AND METHODS OF USING THE SAME - Methods and compositions for separating materials are provided. The present invention provides a method of separating a first material from a second material such as mixing the first material and the second material in a slurry with a beneficiation composition. The beneficiation composition can comprise methyl isobutyl carbinol mixture derived from a methyl isobutyl ketone and/or methyl isobutyl carbinol manufacturing process. Additionally air bubbles can be provided in the slurry to form bubble-particle aggregates with the first material and the bubble-particle aggregates can be allowed to be separated from the second material. | 12-18-2008 |
20090008301 | Methods of Increasing Flotation Rate - Methods of increasing the rate of separating hydrophobic and hydrophilic particles by flotation have been developed. They are based on using appropriate reagents to enhance the hydrophobicity of the particles to be floated, so that they can be more readily collected by the air bubbles used in flotation. The hydrophobicity-enhancing reagents include low HLB surfactants, naturally occurring lipids, modified lipids, and hydrophobic polymers. These methods can greatly increase the rate of flotation for the particles that are usually difficult to float, such as ultrafine particles, coarse particles, middlings, and the particles that do not readily float in the water containing large amounts of ions derived from the particles. In addition, new collectos for the flotation of phosphate minerals are disclosed. | 01-08-2009 |
20090008302 | Method for Removal of Unburned Carbon Contained in Fly Ash - Disclosed is a method for removal of an unburned carbon contained in a fly ash material. The method comprises the steps of adding water to the fly ash to prepare a fly ash slurry; shearing the fly ash slurry using an agitating blade that can rotate at a high speed to generate an active energy on the surface of an unburned carbon by the shearing force, thereby imparting lipophilicity to the unburned carbon; and adding a collecting agent and a foaming agent to the slurry containing the lipophylized unburned carbon to cause the attachment of the collecting agent to the lipophylized unburned carbon, and at the same time, causing the attachment of the unburned carbon having the collecting agent attached thereto an air bubble to separate the unburned carbon by flotation. | 01-08-2009 |
20090114572 | Process for separation of phosphatic materials coastal beach sand - A process for separating phosphatic materials from coastal beach sand and sand deposits used for beach renourishment. The steps include (a) suspending a mixture of beach sand and phosphatic material in water, (b) introducing compressed gas, preferably air, into the mixture or sparging to produce a bubble froth on the surface of the water, and (c) skimming or separating the bubble froth from the surface of or within the water to effect separation of the phosphatic material in the froth from the beach sand left in the water. The bubbles of the bubble froth attract and carry the phosphatic material on the surface of the bubbles during upward movement through the mixture. A conditioner added to the water which improves the tendency of the phosphatic material to “float” is preferred. | 05-07-2009 |
20090114573 | Flotation Reagent For Silicates - This invention relates to the use of a compound of the formula (I) where R | 05-07-2009 |
20090152174 | Flotation Reagent For Minerals Containing Silicate - The invention relates to the use of a compound of formula | 06-18-2009 |
20090194466 | METHOD FOR THE FROTH FLOTATION OF COAL - The present invention relates to the beneficiation of coal by the process of froth flotation and specifically relates to a process for the froth flotation of coal using a collector consisting essentially of a fatty acid monoester of a polyol, a fatty acid diester of a polyol, or a mixture thereof. | 08-06-2009 |
20090301941 | Process and composition for froth flotation - A method for conducting froth flotation using a collector which is primarily hydrocarbon in nature or is a mixture of hydrocarbons with certain oxygenates, the collectors being substantially free of polynuclear aromatics, sulfur and nitrogen. | 12-10-2009 |
20100000913 | COLLECTORS - Collectors for froth flotation including oxidized fatty acid compositions and oxidized and maleated compositions. In particular, use of oxidized tall oil compositions and oxidized and maleated fatty acid compositions are disclosed. | 01-07-2010 |
20100065479 | COLLECTOR FOR THE FLOTATION OF CARBONATES - The invention relates to a collector for the separation by flotation of carbonates contained in non-sulfurous minerals, particularly phosphoric rock, comprising at least one phosphoric ester of formula (I) | 03-18-2010 |
20100252487 | METHODS AND COMPOSITIONS OF BENEFICIATION - Methods and compositions for separating materials are provided. In an embodiment, the present invention provides a method of separating a first material from a second material. For example, the method can comprise mixing the first material and the second material in a shiny with a beneficiation composition. The beneficiation composition can comprise one or more fatty acid by-products derived from a biodiesel manufacturing process. Air bubbles can be provided in the slurry to form bubble-particle aggregates with the first material and the bubble-particle aggregates can be allowed to be separated from the second material. | 10-07-2010 |
20110290704 | Foaming Agent And Method For Floatation Of Insoluble Components Of Raw Salts - The invention relates to a method for separating insoluble components from sylvinite, wherein the sylvinite is suspended in a saturated salt brine, a coagulating agent is added to the suspension, and a foaming agent is then added to the composition thus obtained, said foaming agent comprising and ether and/or ester, wherein a) the ethers of formula 1 correspond to R—O—R′ (1), where R is a linear or branched alkyl or alkenyl groups having 2 to 30 carbon atoms and R′ is a linear or branched alkyl or alkenyl groups having 1 to 30 carbon atoms; b) the esters are derived from monovalent or multivalent alcohols having 1 to 30 carbon atoms (alcohol radicals); or c) the ethers and/or esters are cyclic, wherein the ring size is 6 to 30 carbon atoms. | 12-01-2011 |
20110290705 | Collecting Agent and Method for Floatation of Insoluble Components of Raw Salts - The invention relates to a method for separating insoluble components of sylvinite, in that the sylvinite is suspended in a saturated salt solution, a coagulating agent is added to the suspension, and a foaming agent comprising a hydrocarbon radical having from 6 to 16 carbon atoms is added to the composition so obtained. | 12-01-2011 |
20120061298 | IMPROVED METHOD AND APPARATUS FOR FROTH FLOTATION IN A VESSEL WITH AGITATION - A method of separating mixed particles in a flotation cell uses a fluidized bed within the cell where particles are fluidized in a quiescent zone by liquid moving upwardly through the fluidized bed. The fluidizing liquid may be provided by the feed or by recycling liquid from upper parts of the cell such as from the disengagement zone. Bubbles are introduced into the lower part of the cell through a mechanical impeller which also breaks up any channels in the mixing zone, or by separate aeration in the bottom of the cell or by introduction through a recycle pipe. | 03-15-2012 |
20120111772 | METHYL ISOBUTYL CARBINOL MIXTURE AND METHODS OF USING SAME - The invention is directed towards methods and compositions for separating materials are provided. The present invention provides a method of separating first material from a second material such as mixing the first material and the second material in a slurry with a beneficiation composition. The beneficiation composition can comprise methyl isobutyl carbinol mixture derived from a methyl isobutyl ketone and/or methyl isobutyl carbinol manufacturing process. Additionally air bubbles can be provided in the slurry to form bubble-particle aggregates with the first material and the bubble-particle aggregates can be allowed to be separated from the second material. | 05-10-2012 |
20120132571 | Process and Composition for Froth Flotation - A method for conducting froth flotation using a collector which is primarily hydrocarbon in nature or is a mixture of hydrocarbons with certain oxygenates, the collectors being substantially free of polynuclear aromatics, sulfur and nitrogen. | 05-31-2012 |
20120145605 | COLLECTORS FOR FLOTATION OF MOLYBDENUM-CONTAINING ORES - The invention is directed to the use of non-sulfur containing compounds and their derivatives as collectors in the froth flotation of particular mineral sulfide and metallic compounds, particularly molybdenum-containing compounds. The non-sulfur containing compounds and their derivatives may be from a natural source or synthetic. The non-sulfur containing compounds are typically compatible with common frothers. The non-sulfur containing compounds may be used singularly, with one or more derivatives, or in any combination with each other and/or known commercial sulfur containing collectors. | 06-14-2012 |
20130068666 | FLOTATION PROCESS FOR RECOVERING FELDSPAR FROM A FELDSPAR ORE - A flotation process for recovering feldspar from a feldspar containing feed material, comprising the following steps: (1) forming an aqueous suspension of a feldspar containing feed material, in the absence of hydrofluoric acid, wherein the suspension comprises from 0.004 to 0.3% wt. of a flotation reagent comprising: (a) one or more amines, containing at least one aliphatic hydrocarbon chain, linear or branched, saturated or unsaturated, comprising 8 to 50 carbon atoms, or a salt thereof; and (b) one or more primary, secondary or tertiary alcohols, containing at least one aliphatic hydrocarbon chain, linear or branched, saturated or unsaturated, comprising 8 to 50 carbon atoms; the ratio of (a) to (b) ranging from 500:1 to 1:40 by weight; (2) agitating the obtained suspension to produce a feldspar containing fraction, and (3) separating the feldspar containing fraction. | 03-21-2013 |
20130092603 | Collector Compositions and Methods of Using the Same - Formulations for value mineral collector compositions composed of at least one first collector selected from an organic ammonium salt of an organic sulfur-containing acid; and at least one second collector selected from neutral collectors and/or organic ammonium salts of an organic sulfur-containing acids, such that the second collector is different from said first collector, are provided herein, along with methods for making and using same. | 04-18-2013 |
20130092604 | Froth Flotation Processes - Froth flotation processes that include adding a beneficiating amount of a value mineral collector composed of an organic ammonium salt of a sulfur-containing acid to at least one stage of a froth flotation process to recover value minerals from mineral ore bodies are disclosed herein. | 04-18-2013 |
20130092605 | Froth Flotation Processes - Froth flotation processes that include adding a beneficiating amount of a value mineral collector composed of an organic ammonium salt of a sulfur-containing acid to at least one stage of a froth flotation process to recover value minerals from mineral ore bodies are disclosed herein. | 04-18-2013 |
20130161239 | FROTH FLOTATION PROCESS FOR THE SEPARATION OF SILICATES AND ALKALINE EARTH METAL CARBONATES USING A COLLECTOR COMPRISING AT LEAST ONE HYDROPHOBICALLY MODIFIED POLYALKYLENEIMINE - The invention refers to a process to separate silicates and alkaline earth metal carbonates implementing at least one hydrophobically modified polyalkyleneimine, wherein:
| 06-27-2013 |
20130277280 | AMINE-CONTAINING FORMULATIONS FOR REVERSE FROTH FLOTATION OF SILICATES FROM IRON ORE - The present invention relates to a process for enriching an iron mineral from a silicate-containing iron ore by reverse froth flotation of the ore using a collecting composition comprising: a) a compound of formula R | 10-24-2013 |
20140021104 | AMINE AND DIAMINE COMPOUNDS AND THEIR USE FOR INVERSE FROTH FLOTATION OF SILICATE FROM IRON ORE - The invention relates to a process for enriching an iron mineral from a silicate containing iron ore by inverse flotation comprising the addition of a collector or collector composition comprising at least one of the compounds of formulae RO—X—NH | 01-23-2014 |
20140027354 | DIAMINE COMPOUNDS AND THEIR USE FOR INVERSE FROTH FLOTATION OF SILICATE FROM IRON ORE - The invention concerns a process for enriching an iron mineral from a silicate containing iron ore by inverse flotation comprising the addition of a collector or collector composition comprising at least one of the compounds of formulae RC(O)N(Z—O—X-NH | 01-30-2014 |
20140048453 | COLLECTORS FOR ORE BENEFICIATION - The present invention relates to fatty alkoxylated polyamine collectors for the beneficiation by flotation of aqueous suspensions of ores, the use of said fatty alkoxylated polyamine collectors in flotation processes for the beneficiation of ores, more particularly in reverse flotation processes for the beneficiation of silicates containing-ores. | 02-20-2014 |
20140048454 | COLLECTORS FOR ORE BENEFICIATION - The present invention relates to fatty amido amine collectors for the beneficiation by flotation of aqueous suspensions of ores, the use of said fatty amido-amine collectors in flotation processes for the beneficiation of ores, more particularly in reverse flotation processes for the beneficiation of silicates containing-ores. | 02-20-2014 |
20140048455 | AMINE AND DIAMINE COMPOUNDS AND THEIR USE FOR INVERSE FROTH FLOTATION OF SILICATE FROM IRON ORE - Compounds of the formulae: RO—X—NH | 02-20-2014 |
20140061101 | DEPRESSOR IN IRON ORE FLOTATION COMPRISING SUGAR CANE BAGASSE, USE OF SUGAR CANE BAGASSE AS DEPRESSOR IN IRON ORE FLOTATION AND PROCESS OF PREPARING DEPRESSOR COMPRISING SUGAR CANE BAGASSE - A depressor in iron ore flotation comprises sugar cane bagasse and caustic soda so as to assist in the iron ore flotation. | 03-06-2014 |
20140144815 | COMPOSITION AND METHOD FOR IMPROVEMENT IN FROTH FLOTATION - The invention provides methods and compositions for improving a froth flotation type separation. The method uses a thickener to improve the effectiveness of an emulsifier. The improvement allows for low dosages of emulsifier to work well so the emulsifier does not cancel out the effectiveness of other additives in the slurry such as collectors, frothing agents, regulators, depressors, deactivators, and/or activators. | 05-29-2014 |
20140202932 | FLOTATION PROCESS AND FLOTATION APPARATUS FOR COAL FLYASH - The present invention provides a turbulent flow fly ash flotation process and flotation device. The process of the present invention comprises the following steps: 1) adding a flotation agent and/or a collecting agent to fly ash raw material to form a mixture; 2) in the flotation device, allowing the mixture obtained from step 1) to fall from the upper part of the flotation device; 3) forming upwardly blowing gas in the flotation device, the gas having countercurrent contacts with the falling mixture of step 2), and in the process of the upward movement of the gas, the gas being in a turbulent state; 4) collecting particles which are formed by the upward movement of the gas in step 3) and which pass through the flotation plate of the flotation device. In the present invention, the gas for blowing bubbles and particles upward is in a turbulent state to provide improved flotation effect and higher flotation rate. | 07-24-2014 |
20140216987 | PROCESS FOR CONCENTRATING MANGANESE ORES VIA REVERSE CATIONIC FLOTATION OF SILICATES - A process for concentrating manganese from the tailing of a manganese-carrying mineral including removing a coarse particle size fraction from the tailing, desliming and conducting an acidic or a basic reverse cationic flotation. The manganese-carrying minerals are typically minerals with low manganese content from the lithologies “Tabular Pelite” (or PETB), Pelite Siltite (or PEST), Detritic (or DETR), Rich Pelite (or PERC) and Metallurgical Bioxide (or BXME). In another aspect, the present invention also relates to a reverse cationic flotation used to concentrate manganese which is carried out using depressor agents and collector agents as flotation reagents. | 08-07-2014 |
20140262974 | COMPOSITION AND METHOD FOR IMPROVEMENT IN FROTH FLOTATION - The invention provides methods and compositions for improving a froth flotation type separation. The method involves adding a hydrocarbon reaction product to slurry to enhance the separation. The method is particularly effective with coal separation because it increases yield without increasing ash content of flotation concentrate. | 09-18-2014 |
20140305848 | METHOD FOR IMPROVING SELECTIVITY AND RECOVERY IN THE FLOTATION OF NICKEL SULPHIDE ORES THAT CONTAIN PYRRHOTITE BY EXPLOITING THE SYNERGY OF MULTIPLE DEPRESSANTS - A method of using the synergy of multiple depressants to improve the depression of iron sulphide without compromising the recovery of the valuable sulphide minerals in the flotation of non-ferrous metal sulphides, while reducing or eliminating the use of environmentally problematic chemicals such as polyamines. The method has significant economic and environmental benefits. The multiple depressants comprise at least one organic polymer, at least one sulphur-containing compound and/or at least one nitrogen-containing organic compound. | 10-16-2014 |
20150021236 | Mineral Ore Flotation Using Carboxymethyl Cellulose With Different Characteristics In Different Flotation Cells - A flotation method for mineral processing is disclosed. The method for floating includes a first step of using a first carboxymethyl cellulose (CMC) in a first flotation cell, and a subsequent step includes using a second CMC in a subsequent flotation cell, the first and second CMCs having different characteristics. The first flotation cell may be used in at least one rougher stage and/or at least one rougher-scavenger stage of the flotation method, and the subsequent flotation cell may be used in at least one cleaner stage, and/or at least one cleaner scavenger stage, and/or at least one recleaner stage of the flotation method. A product may be obtained, directly or indirectly, by such a method. A mineral processing plant may use at least two CMCs of different characteristics in flotation for mineral processing. | 01-22-2015 |
20150076038 | Reverse Iron Ore Flotation By Collectors In Aqueous Nanoemulsion - The present invention relates to a process for concentration of silicate-containing minerals and ores by froth flotation, in particular to a reverse flotation process, in the presence of a finely dispersed collecting agent characterized by a specific droplet size distribution. | 03-19-2015 |
20150108043 | METHOD FOR THE BENIFICIATION OF COAL - The present invention relates to the beneficiation of coal by the process of froth flotation and specifically relates to a process for the froth flotation of coal using a mixture of fatty acids and rosin acids (and/or certain derivatives of fatty acids and rosin acids) as a collector. | 04-23-2015 |
20150290659 | Flotation of silicates from ores - The present invention relates to a method for the flotation of silicates from ores in the presence of a collecting agent and an effective amount of a froth modifier/collecting booster comprising at least one of the compounds of general formula (I) or mixtures thereof: wherein X is C1-C3 alkyl; R′ is straight or branched hydrocarbyl group containing 8 to 22 carbon atoms; n is integer from 2-4; m can vary from 0 to 2 and R′ is X or —(CH2) | 10-15-2015 |
20150314305 | Polyquaternary Polymer as a Depressant in a Method for Froth Flotation of Potash Ores - The present invention relates to the use of a polyquaternary polymer obtainable by reacting i) a dialkylamine having the structure R | 11-05-2015 |
20160089679 | AUTOMATED SYSTEM OF FROTH FLOTATION COLUMNS WITH AERATORS INJECTION NOZZLES AND PROCESS THEREOF - An automated system of froth flotation columns is disclosed. Aerators injection nozzles of pulp are vertically positioned at the top of the column for high recovery froth floating of ores such as gold, iron, copper, silver, palladium, platinum and others. In an embodiment, the system includes at least two flotation columns interconnected to each other. The aerators injection nozzles are positioned at the top of the columns and respective flotation process. | 03-31-2016 |
20160107170 | PRODUCTION METHOD FOR LOW-SULFUR IRON ORE - A process for producing an iron ore having a sulfur content reduced to 0.08% or less, which includes a step of subjecting an iron ore containing sulfur in an amount of more than 0.08% and 2% or less to a flotation. The flotation satisfies any one of the following (1) to (3): (1) a xanthate-based compound and a salt of an amine compound are used as collectors, (2) a xanthate-based compound is used as a collector and a substance which releases a sulfur ion in water is used as an activator, or (3) a xanthate-based compound and a salt of an amine compound are used as collectors and a substance which releases a sulfur ion in water is used as an activator. | 04-21-2016 |
20160114335 | METHODS AND COLLECTORS FOR PURIFYING PHOSPHOROUS CONTAINING MATERIALS - Compositions, aqueous mixtures that include the composition and an ore, and methods for making and using same are provided. The composition can include a tall oil and a saccharide-based monoester that can have the chemical formula (A). The aqueous mixture can include an ore, water, the tall oil, and the saccharide-based monoester that can have the chemical formula (A). The method can include combining the ore, water, the tall oil, and the saccharide-based monoester that can have the chemical formula (A) to produce an aqueous mixture. The method can also include collecting a purified ore from the aqueous mixture. In the chemical formula (A), R | 04-28-2016 |
20160114336 | MINERAL PROCESSING - According to the invention there is provided a method of processing a mixture of minerals including the steps of:
| 04-28-2016 |
20160114337 | POLYAMIDOAMINE CATIONIC COLLECTORS AND METHODS FOR MAKING AND USING SAME - Compositions, aqueous mixtures that include the composition and an ore, and methods for making and using same. The composition can include an organic acid and a polyamidoamine. The polyamidoamine can have the chemical formula (A). In the chemical formula (A), R | 04-28-2016 |
20160129456 | The Synthesis of New Anionic Surfactants and Their Use as Collectors in Froth Flotation of Non-Sulphidic Ores - The present invention relates to a compound obtainable by reacting an N-acyl neutral amino acid or a salt thereof, or an N-acyl neutral amino acid oligopeptide or a salt thereof with a monohydroxy monocarboxylic acid or a salt thereof. This compound is useful as a collector in a process for froth flotation of non-sulfidic ores, especially phosphate ores. The invention also relates to a method which comprises the steps of a) conditioning a pulped phosphate ore, wherein the phosphate ore comprises a calcium phosphate mineral or a mixture of such minerals, and gangue minerals, with an effective amount of a calcium phosphate mineral collector reagent, which is the above-mentioned compound, and optionally other flotation aids and b) performing a froth flotation process to recover the calcium phosphate mineral(s). | 05-12-2016 |
209167000 | Preferential | 7 |
20090095660 | NEW APPLICATIONS FOR FROTH FLOTATION PROCESSES - A process is described for the separation of fluorinated plastic particles from a mixture of solid particles of similar specific gravity. The process comprises mixing the particles with water, adding air to create bubbles, and generating two or more product streams, one of which floats and the other which sinks. The floating stream is enriched in fluoropolymer particles. Per pass yield and selectivity of fluorinated plastics are enhanced by the addition of a carboxylic acid to the froth flotation medium. | 04-16-2009 |
20090134070 | Method for Removal of Unburned Carbon from Fly Ash - Disclosed is a method for removing unburned carbon from fly ash at low cost and within a short time. The method comprises the steps of adding a collecting agent to fly ash directly, agitating/mixing the mixture in a mixer ( | 05-28-2009 |
20090266746 | MINERAL ORE FLOTATION AID - A method is provided for enhancing selective separation of ore values by addition of an effective amount of a treatment reagent to the separation process, such as froth flotation. The treatment reagent can be added at different stages, such as to a grinding mill, conditioning tank before flotation, or in the flotation cells before, after or simultaneous to the addition of other conventional flotation reagents. By adding the treatment agent, the recovery of valuable minerals from a froth flotation process is increased. In an embodiment of the present invention, the treatment reagent is a water-soluble ethylene oxide/propylene oxide copolymer. | 10-29-2009 |
20100044280 | Flotation Process Using an Organometallic Complex as Activator - The invention provides a flotation process which includes the steps of providing a flotation mixture containing mineral values to be recovered and adding an activator to the flotation mixture, which activator may comprise a metal complex formed by a coordinating metal ion and a ligand. A particular aspect of the invention relates to the use of the metal complexes as activators. These complexes are stable over a wide pH range, which is not the case with other inorganic compounds of which the applicant is aware, such as zinc sulphate, copper sulphate and manganese sulphate. The ligand may have the structure R—(X) | 02-25-2010 |
20100078364 | Process for the flotation of non-sulfidic minerals and ores - A process for the flotation of non-sulfidic minerals or ores, is disclosed in which crushed crude minerals or ores are mixed with water and a collector to form a suspension, air is introduced into the suspension in the presence of a reagent system, and a floated foam containing the non-sulfidic mineral or ores is formed therein along with a flotation residue comprising the gangue polymeric esterquats as the collector polymeric esterquats. The polymeric esterquats are obtained by reacting alkanolamines with a mixture of monocarboxylic acids and dicarboxylic acids and quaternising the resulting esters, optionally after alkoxylation. | 04-01-2010 |
20100213105 | Reverse Iron Ore Flotation By Collectors In Aqueous Nanoemulsion - The present invention relates to a process for concentration of silicate-containing minerals and ores by froth flotation, in particular to a reverse flotation process, in the presence of a finely dispersed collecting agent characterized by a specific droplet size distribution. | 08-26-2010 |
20110272331 | PROCESS FOR THE SEPARATION OF MATERIALS FROM RECYCLED ELECTROCHEMICAL CELLS AND BATTERIES - Materials in battery and electrochemical cells are separated in a form suitable for recycling by employing froth flotation techniques. Bulk materials, such as casings, are removed from converted battery scrap and the resultant pulp is subjected to froth flotation. Froth flotation agents, including frothers, collectors and/or depressants, are used to manipulate the hydrophilic and hydrophobic nature of the materials in the scrap. Hydrophobic materials are entrained in the air bubbles of the froth and float out of the froth flotation vessel while those that are hydrophilic remain in the vessel, thereby separating battery grid materials without resort to pyrometallurgical, energy intensive or other environmentally undesirable processes. | 11-10-2011 |