| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 075746000 | Consolidating metalliferous material (e.g., ore, tailings, flue dust, fluxes, etc.) by agglomerating, compacting, or heat treating; preparatory process therefor; or treating consolidated material therefrom | 33 |
| 20090100969 | TEMPLATES FOR CONTROLLING SYNTHESIS OF NANOPARTICLES INTO DISCRETE ASSEMBLIES - An approach to synthesizing and assembling nanoparticles into discrete, size-tunable, pre-designed architectures is realized in a single synthetic/process step. | 04-23-2009 |
| 20150128766 | DEVICE FOR THE IMPROVEMENT OF CRUDE PELLETS AND PELLETIZING PROCESS - A pelletizing process, having two distinct serial stages. In the first stage, crude (or green) pellets of a given ore, or a mixture of ores (such as iron ore, manganese ore and other minerals), are produced, while in the second stage, a Device for Improvement of Crude Pellets, is used. The Device includes a slightly elastic and smooth surface, with reduced attrition rate, that may be striated, and that, encircled in itself, forms a cylindrical geometric hollow figure supported by a metallic structure, also cylindrical, with the set forming a finishing drum. The Device rotates with an inner and continuous charge of ore pellets, and can rearrange the structure of such pellets, improving their physical quality: compressive strength, sphericity and surface finishing, and assimilate fines generated during previous processes. This device allows application of diverse materials to the pellets to add required extra properties per specificities of subsequent industrial processes. | 05-14-2015 |
| 20160145716 | Method for Treating Aluminum Slags - A method for treating aluminum slags in the form of dross or aluminum salt slags obtained in the preparation of aluminum, in which the aluminum slag in the melting process is brought with the exception of the surrounding atmosphere onto a cooling conveyor which is arranged in a housing provided with extraction facilities and whose first section adjoining the supply of the aluminum slag is flushed with an inert gas and whose second section serves for further cooling of the aluminum slag with introduction of air, wherein the lengths of the first section and the second section of the cooling conveyor are designed so that in the first section of the aluminum slag is cooled to a temperature at which the aluminum slag can no longer be chemically changed by exposure to atmospheric oxygen and in the second section, the slag is cooled to a temperature at which the cooled aluminum slag can be processed further to recover the aluminum in the aluminum slag after leaving the cooling conveyor. | 05-26-2016 |
| 075749000 | With physical separation or classification of solids | 5 |
| 20120325055 | PREPARATION METHOD FOR STAINLESS STEEL SLAGS AND STEELWORKS SLAGS FOR RECOVERY OF METAL - The invention relates to a preparation method for stainless steel slags and modified steelworks slags for recovery of metal. In order to create a dry preparation method which guarantees a low wear and energy efficient comminution and de-agglomeration of stainless steel slags and modified steelworks slags as well as a selective separation of a metal fraction and a silicate fraction and which can be variable in relation to the different slag compositions and different requirements upon the quality of the metal fraction and the at least one silicate fraction, a roller mill is used at least for the comminution. The slags are supplied with a feed grain size of up to approximately 150 mm. The use of an air swept roller mill is advantageous, in which the comminution and de-agglomeration, if necessary drying, and at the same time a separation into an extensively mineral-free metal fraction and a virtually metal-free silicate fraction are brought together. When using an overflow roller mill the separation of the metal fraction and the silicate fraction takes place in an external classifier. | 12-27-2012 |
| 20130098209 | Method for Treating Return Ores Using Plasma - A method and an apparatus for treating return ores using plasma, capable of treating sintered return ores generated in a sintering process in a steel maker or return ores (iron ores) employed in other ironmaking process such as FINEX. The method of treating return ores using plasma includes: providing return ores sorted out by a sorting process; and bonding the return ores by fusing and agglomerating the return ores using plasma. Also, an apparatus for treating return ores using plasma includes a plasma heating device used to fuse and agglomerate sorted return ores. The return ores of a predetermined grain size are fusion-bonded and agglomerated using a flame of a plasma heating device. Particularly, the return ores can be treated in a massive amount to enhance productivity of a fusion-bonding process of the return ores. Furthermore, a great amount of sintered return ores generated in the sintering process can be subjected to a fewer number of re-treatment processes. | 04-25-2013 |
| 20130269485 | METHOD OF PRODUCING ORE SLURRY - A method of producing an ore slurry includes pulverizing and classifying steps as well as an ore slurry condensing step, wherein the slurry condensing step uses as a flocculant solution a diluted solution of the flocculant that satisfies the conditions of: (A) a flocculant molecular weight of 8×10 | 10-17-2013 |
| 20160186278 | Method for Recycling-Processing of Dust Generated in Converter Furnace - To provide a method for recycling processing of dust generated in a converter furnace for collecting the dust at a low cost in a short time and returning it as a metallic iron resource to the converter process. In a method for recycling processing of dust generated in a converter furnace, including: crushing and drying a cake formed by adding a binder to a slurry containing iron powder-containing dust that is generated at the time of converter blowing and wet-collected to produce a mixed slurry and subjecting the produced mixed slurry to a dehydration treatment in a filter press; accumulating the cake in an accumulation tank; and charging the cake into a converter furnace, the crushed product in the accumulation tank is kept at a temperature of less than 90° C. by forcibly passing air into the accumulation tank and charged into a converter furnace according to the converter operation. | 06-30-2016 |
| 075750000 | By sifting | 1 |
| 20100175510 | PRODUCTION METHOD FOR CARBONACEOUS MATERIAL-CONTAINING METAL OXIDE BRIQUETTES - The present invention is directed to provide a production method for carbonaceous material-containing metal oxide briquettes, capable of ensuring sufficient strength of briquettes while using a metal oxide material containing a large amount of fine particles, such as steel mill dust. This method comprises a mixing step of mixing a metal oxide material A containing a large amount of fine particles with a carbonaceous material B in a mixer | 07-15-2010 |
| 075751000 | With heat treatment (e.g., calcinating, fusing, indurating, roasting, sintering, vaporizing, etc.) | 14 |
| 20090217787 | WASTE TREATMENT FURNACE AND METHOD - This invention relates to a waste treatment furnace and method comprising:
| 09-03-2009 |
| 20110088514 | Process for Producing a Foamed Slag on Austenitic Stainless Melts in an Electric Arc Furnace - A process for producing a foamed slag on austenitic stainless melts in an electric arc furnace. A mixture of metal oxides and carbon is introduced into the furnace, the metal oxide is reduced by the carbon below the slag at the metal/slag interface, and the resulting gases bring about the foaming of the slag by bubble formation. The mixture to be charged, which is added in the form of preforms such as briquets or pellets, contains iron oxide, iron carriers, carbon and the required binders in addition to nickel oxide. | 04-21-2011 |
| 20120297930 | METHOD AND APPARATUS FOR CONDENSING METAL VAPOURS USING A NOZZLE AND A MOLTEN COLLECTOR - Methods and apparatus are disclosed for condensing vapour phase compounds or elements, typically metals such as magnesium, obtained by reduction processes. | 11-29-2012 |
| 20130042722 | ELECTRIC ARC FURNACE DUST RECYCLING APPARATUS AND METHOD - The present technology provides an illustrative apparatus for recycle electric arc furnace (EAF) dust and method of use related to the same. The apparatus has a heat controlling region coupled to a separation volume and includes at least one magnet and a cooling region. The heating controlling region operates at a temperature sufficient to transform at least some of the EAF dust into a mixture of gaseous zinc and one or more additional metals. The magnet separates the iron-rich material from the mixture of gaseous zinc and one or more additional metals and the cooling region condenses the gaseous zinc. | 02-21-2013 |
| 075755000 | On moving grate, moving pallet, or endless belt | 2 |
| 20140020511 | PROCESS FOR THE OPTIMIZED PRODUCTION OF IRON ORE PELLETS - The present invention describes an advantageous and effective streamlined process for the production of iron ore pellets, the green pellets replacing the burnt pellets for covering the metallic surface in “travelling grate” furnace during the burning step, the process comprising at least some or all of the steps of grinding the iron ore; filtering the crushed iron ore; mixing the filtered iron ore with at least one binder; pelletizing the mixture; drying the green pellets; transferring the pellets to the side and bottom grids of a “travelling grate” furnace equipment and screening the burnt iron ore pellets. An optimized process for the production of iron ore pellets is provided that is innovative, efficient and economical when compared to currently known processes. | 01-23-2014 |
| 075757000 | With gas recycling or reusing | 1 |
| 20100242684 | PROCESS FOR SINTERING ON A SINTERING MACHINE - A process for sintering metal-containing materials, such as iron ores or manganese ores, on a sintering machine including a sintering belt for transporting the sinter mix during sintering thereof. The sintering belt has first, second and third portions. Sintering waste gas from the third portion is transported to and unified with sintering waste gas from the first portion in a mixing region to form a mixed gas, wherein the transporting distance of the sintering waste gas from the third portion to the mixing region is greater than the transporting distance of the sintering waste gas from the first portion to the mixing region. An apparatus for carrying out the process is disclosed, including the sintering belt, suction boxes operative at the portions of the belt, and lines for conveying the gas produced and the gases used in the process. | 09-30-2010 |
| 075764000 | Coking of binder or additive | 1 |
| 20130276587 | METHOD FOR PRODUCING A COKING ADDITIVE BY DELAYED COKING - This invention relates to the field of oil refining and, in particular, to a delayed coking process that produces coke with a volatile substances content of 15-25% for use as a coking additive in a coal coking charge in the production of metallurgical coke. The invention is directed towards increasing the content of volatile substances in coke and increasing the efficiency of a plant. The method comprises preheating a primary raw material, mixing the latter with recycle in a tank in order to form a secondary raw material, heating the secondary raw material to 455-470° C. and supplying the latter to a coking chamber, and coking to form a coking additive. It is expedient to feed an antifoaming additive into the coking chamber 3-5 hours before coking is finished. It is preferable to feed in the antifoaming addition agent at two-four points around the perimeter of the coking chamber. | 10-24-2013 |
| 075765000 | Sintering or with agglomerating or compacting | 7 |
| 20150292055 | METHOD FOR MANUFACTURING REDUCED IRON - Provided is a process for manufacturing reduced iron by heating agglomerates, said process being capable of enhancing the yield of reduced iron and thus improving the productivity thereof. A process for manufacturing reduced iron which includes a step for agglomerating a mixture that comprises an iron oxide source, a carbonaceous reducing agent and a melting point regulator and a step for heating the obtained agglomerates to reduce the iron oxide contained in the agglomerates, wherein the agglomerates contain at least 1 mass % of a silicate mineral having a solidus temperature of 1300° C. or lower. | 10-15-2015 |
| 075766000 | With coal, coke, pitch, asphalt, or tar | 2 |
| 20090078088 | Method of Granulating Raw Material for Sintering, and Method of Manufacturing Sintered Iron Ore - A raw material for sintering of 100% in total is blended so as to adjust iron-containing dust and/or sludge to 60% or more, and coarse grains having a grain size of 2 mm or larger to 20% or more on the weight basis, one-third or less of the total amount of addition of coke breeze is added as a fuel, the blend is kneaded and granulated using a vibration kneading granulator to thereby produce granulated grains, the residual portion of the total amount of addition of coke breeze is added to the granulated grains, the blend is subjected to exterior coating granulation using a rolling type granulator, thus-granulated raw material for sintering is screened, and a fraction having a grain size of 1 mm or larger is used for sintering, making it possible to sinter microparticulate dust and microparticulate sludge as main raw materials, which have conventionally been used only to a limited amount of use. | 03-26-2009 |
| 20130174695 | METHOD FOR PRODUCING PRESSED ARTICLES CONTAINING COAL PARTICLES - In a method for producing pressed articles containing coal particles, before being mixed with a binder system containing water, at least a subset of the coal particles is subjected to at least two impregnation steps in which it is impregnated with at least one substance. The pressed articles may be used, for example, in methods of pig iron production in a packed bed or in methods for producing carbon carriers for methods of pig iron production in a packed bed. | 07-11-2013 |
| 075767000 | With synthetic polymer, natural polymer, or carbohydrate | 2 |
| 20100005928 | METHOD FOR PRODUCING AGGLOMERATED MATERIAL - A method is provided for producing an agglomerated material that is used for producing metallic iron by heat reduction in a moving hearth-type reducing furnace, wherein the agglomerated material can have a high mechanical strength without increases in the binder content and the moisture content of the material mixture. The method for producing an agglomerated material used for producing metallic iron, wherein the agglomerated material is produced by agglomerating a material mixture containing an iron-oxide-containing material, a carbonaceous reducing agent, a binder, and moisture; drying the material mixture; and charging and heating the material mixture in a moving hearth-type reducing furnace to reduce the iron oxide contained in the material mixture with the carbonaceous reducing agent, wherein a carbohydrate is used as the binder and the material mixture is left to stand prior to the agglomeration. | 01-14-2010 |
| 20140033872 | BINDER COMPOSITIONS AND PROCESSES OF PREPARING IRON ORE PELLETS - Binder compositions for agglomerating iron ore fines are provided, the compositions comprising: (a) about 30 to about 80% by weight one or more types of anionic or nonionic acrylamide-containing polymer; (b) about 10 to about 35% by weight one or more types of inorganic or organic monomeric electrolyte; and (c) about 10 to about 35% one or more types of finely ground wood fiber. A process for preparing iron ore pellets with the binder compositions is also provided, the process comprising: (i) adding a binder composition to particulate iron ore to form a mixture; and (ii) forming the mixture into pellets. | 02-06-2014 |
| 075769000 | Sintering | 2 |
| 20100107822 | APPARATUS AND METHOD FOR MANUFACTURING IRON BLOCK USING IRON PIECES - Disclosed herein is an apparatus and a method for manufacturing an iron block from iron pieces generated during a machining process. The apparatus includes: a hopper through which chip-shaped iron pieces are introduced; an agitator positioned below the hopper, which includes one or more inlets in an upper region thereof and an outlet in a lower region thereof, and which includes an impeller internally mounted on a center shaft and rotated therearound so as to agitate the iron pieces, silicate of soda and water introduced through the inlets; and a forming unit positioned below the outlet of the agitator and including a heating wire embedded in an inner wall thereof. The invention has advantages of minimized weight loss and increased hardness, and the moisture content contained in the iron block is minimized, thus avoiding a decrease in hardness attributable to corrosion during the storage and the transportation. | 05-06-2010 |
| 20140196573 | RECYCLING METHOD FOR ALUMINUM DUST COLLECTION AND ALUMINUM METALLIC SMELTING SLAG - The present invention is a recycling method for aluminum dust collection and aluminum metallic smelting slag, where aluminum dross is processed into dross pellets having a particle diameter of larger than 200 meshes and smaller than 400 meshed, with which an aqueous solution of a binder is mixed to form a raw material. The raw material is then pressure molded to form a raw refractory material and sintered under a work temperature of 1050° C.˜1450° C., and reduced in temperature to finally form a refractory material. | 07-17-2014 |
| 075770000 | Agglomerating or compacting | 11 |
| 20080196551 | Separation of Metal Values in Zinc Leaching Residues - The invention relates to the separation of metals in Fe-bearing zinc leaching residues, in particular neutral and weak acid leach residues. | 08-21-2008 |
| 20090049955 | Method and Apparatus for the Recovery of the Secondary Metallurgy (LF) Slag and Its Recycling in the Steel Production Process by Means of Electric Furnace - A method for the recovery of the secondary metallurgy (LF) slag from a plant for the production of steel comprises a cooling step of the slag, by means of the passage of air and/or other gas, a breakdown step, i.e. transformation of several phases present in the mass into powder and a step of drawing the powder. | 02-26-2009 |
| 20090126533 | Fume Disposal Process and Fume Disposal System - For collecting fine particles from fume generated in the process of thermal cutting or welding of a metal material and solidifying them, a fume disposal system comprises a fume introducing chamber | 05-21-2009 |
| 20090165599 | METHOD FOR RECYCLING STEELMAKING DUST - Steelmaking dusts produced during the manufacture of iron and steel by means of a melting furnace and containing iron and iron oxides as a principal component are mixed, and granulated, with a powder containing carbon as a principal component to provide mixed granules. The mixed granules are, after having impregnated with water before the molding thereof, molded under pressure within a mold assembly to provide briquettes, which are solidified bodies of the steelmaking dusts. The briquettes are reused as a raw material to be charged into the melting furnace. When the dusts having a concentration of zinc enhanced are dezinced, reduction in amount of dezincing treatment and increase of the efficiency of the dezincing treatment can be achieved. | 07-02-2009 |
| 20120174713 | Method of Agglomeration - A method of agglomerating a nickel laterite ore comprising the steps of: i) feeding a nickel laterite ore material to be agglomerated into an agglomeration circuit; and ii) adding a sulfuric acid containing agglomerating solution to the ore material in the agglomeration circuit to provide an agglomerated ore material, wherein the acid concentration of the agglomerating solution is between 100 to 400 g/L. | 07-12-2012 |
| 20120210824 | METHODS, SYSTEMS AND DEVICES FOR MAKING COLD BONDED AGGLOMERATES - There are provided methods, systems and processes for forming cold bonded agglomerates in the form of pellets, briquettes or compacts from iron oxide materials, such as iron ore concentrates. The cold bonded agglomerates have sufficient strength and durability to be handled and shipped without significant damage. Forming the iron ore concentrate product into agglomerates facilitates the shipment and handling of the product and places the product in a form that is suitable for use by a wider variety of iron making customer facilities. There are also provided methods, systems and devices for handling greenballs as they cure, and before they have gained sufficient strength for significant handling, stockpiling or shipping. | 08-23-2012 |
| 20120266724 | APPARATUS AND METHOD FOR MANUFACTURING COMPRESSED LUMP OF METAL SCRAP - Disclosed herein are an apparatus and method for manufacturing a compressed lump of metal scrap that is capable of compressing various kinds of collected metal scrap into a standardized form so that the metal scrap can be directly introduced into a blast furnace. A through hole is formed in a compressed lump of metal scrap during manufacture of the compressed lump of metal scrap so that the compressed lump of metal scrap can be efficiently melted and the interior of the compressed lump of metal scrap can be observed. | 10-25-2012 |
| 20130139650 | WASTE HANDLING METHODS AND APPARATUS - Apparatus and a method of handling a molten metal processing by-product are provided in which the by product is placed in a container unit and put in the apparatus, the apparatus including an element having a first position outside of the container and a second position in which at least a part of the element is in the container so as to compress the by-product and exclude oxygen from it. The element also serves to transfer heat from the contents of the container unit to the element and so provide cooling. The element can then be returned to the first position, the container unit be removed and placed at a cooling location for final cooling. | 06-06-2013 |
| 20150047470 | METHOD OF AGGLOMERATING SILICON/SILICON CARBIDE FROM WIRESAWING WASTE AND PRODUCT THEREFROM - The process of the present invention begins with a source of silicon and silicon carbide from wafer production. The silicon/silicon carbide waste material is dewatered as need be and passed to a mixer where the waste material is agglomerated. A binder is applied to the waste material either during agglomeration or during pelletizing. A variety of organic binders may be used such as polyvinyl alcohol, molasses, sodium silicate and polyethylene glycol; however, the preferred binder is a lignosulsulfonate. The amount of binder used will depend upon the particular binder and the feed material used. The silicon/silicon carbide-containing waste material is pelletized. The invention also provided silicon/silicon carbide-containing pellets that may be used as reduction material in smelting furnaces for the production of metals and alloys. | 02-19-2015 |
| 075772000 | With synthetic polymer, natural polymer, or carbohydrate | 1 |
| 20110209582 | METHOD FOR AGGLOMERATING INDUSTRIAL DUST, IN PARTICULAR USING A BRIQUETTING TECHNIQUE - Process for agglomerating industrial dusts comprises: kneading in a vat the dusts to be agglomerated in the presence of a first binder comprising a polymer with a molecular weight above 500,000 g/mol, which is in the form of a reverse emulsion; then adding to the vat separately, while still kneading, a second binder comprising a silicate of an alkaline metal; and finally compacting the resulting agglomerates under pressure. | 09-01-2011 |
| 075773000 | With Alkaline earth metal compound, clay, or hydrosetting agent | 1 |
| 20140096650 | PROCESS FOR THE IMPROVEMENT OF REDUCIBILITY OF ORE PELLETS - The present invention discloses a new process for the improvement of reducibility of iron ore pellets comprising the steps of preparing a raw material mixture which contain metallic Ni powder, pelletizing the said mixture obtained, burning the said raw pellets and reducing the said burnt pellets under reducing conditions with presence of CH | 04-10-2014 |
