Class / Patent application number | Description | Number of patent applications / Date published |
075392000 |
Producing or treating free metal
| 791 |
075343000 |
Producing or purifying free metal powder or producing or purifying alloys in powder form (i.e., named or of size up to 1,000 microns in its largest dimension)
| 242 |
075100100 |
Electrothermic processes (e.g., microwave, induction, resistance, electric arc, plasma, etc.)
| 161 |
075100670 |
Magnetic (e.g., electromagnetic, etc.) or electrostatic processes
| 42 |
075375000 |
Process control responsive to sensed condition
| 40 |
075331000 |
Producing solid particulate free metal directly from liquid metal (e.g., liquid comminuting, etc.)
| 38 |
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 |
075342000 |
Spheroidizing or rounding of existing solid metal particles | 4 |
20090095129 | Process for enhancing dry compressive strengsth in iron ore pelletizing - A process for producing green iron ore pellets comprises the inclusion of Direct Reduced Iron or a metallic iron-containing material into the pellet mixture to enhance Direct Compressive Strength properties of the green pellets. | 04-16-2009 |
20120240726 | PRODUCTION METHOD FOR HIGH PURITY COPPER POWDER USING A THERMAL PLASMA - The present invention relates to a method of manufacturing a high purity copper (Cu) powder material useable in fabricating a sputtering target material for electronic industrial applications, for example a penetrator liner. The foregoing method has a configuration of using an apparatus composed of a raw material feeder, a plasma torch and a reactor to prepare a metal powder, and includes steps of passing a Cu powder having an average particle diameter of 30 to 450 μm through the thermal plasma torch at an introduction rate of 2 to 30 kg/hr. to thereby fabricate a Cu powder having an average particle diameter of 5 to 300 μm. | 09-27-2012 |
20130263698 | METHOD FOR FABRICATING FINE REDUCED IRON POWDERS - A method for fabricating fine reduced iron powders comprises the following steps: heating fine iron oxide powders having a mean particle size of smaller than 20 μm to a reduction temperature of over 700° C. to reduce the fine iron oxide powder into iron powders that are partially sintered into iron powder agglomerates; and performing a crushing-spheroidizing process on the iron powder agglomerates to obtain individual iron powders having a mean particle size of smaller than 20 μm. The method can reduce iron oxide powers into iron powders having a rounded shape and a high packing density and a high tap density, which are suitable for the metal injection molding process and the inductor fabrication process. The reduced iron powder may further be processed using an annealing process and a second crushing-spheroidizing process in sequence to further increase the sphericity, packing density, and tap density of the reduced iron powder. | 10-10-2013 |
20160138139 | SPHEROIDIZING TREATMENT METHOD FOR MOLTEN METAL OF SPHEROIDAL GRAPHITE CAST IRON - A graphite spheroidizing agent containing: 30-80 wt % of Si; Mg; RE (rare earth element) which comprises Ce with a purity level of 80-100 wt % or La with a purity level of 80-100 wt %; Ca; and Al is used. The graphite spheroidizing agent is added so as to satisfy the conditions that an amount of RE equivalent to 0.001-0.009 wt % of the total weight of the molten metal, an amount of Ca equivalent to 0.001-0.02 wt % of the total weight of the molten metal, and an amount of Al equivalent to 0.001-0.02 wt % of the total weight of the molten metal are added to the molten metal, and that the molten metal contains 0.03-0.07 wt % of Mg after the graphite spheroidizing treatment. It is possible to suppress crystallization of chunky graphite in a thick section of spheroidal graphite cast iron and deterioration of mechanical properties, with a low cost. | 05-19-2016 |
075388000 |
Preparing for amalgamation, preparing and amalgamating, or breaking amalgam to produce free metal | 2 |
20110107874 | METHOD FOR PRODUCING BRIQUETTE, METHOD FOR PRODUCING REDUCED METAL, AND METHOD FOR SEPARATING ZINC OR LEAD - An object of the present invention is to produce briquettes that have high strength even when the amounts of binder and water used are decreased as much as possible. A method for producing briquettes that achieve this object includes a step of forming primary granules by using a powder containing a metal oxide and at least one of zinc oxide, lead oxide, and titanium oxide and a step of compressing the primary granules still containing the at least one of zinc oxide, lead oxide, and titanium oxide so as to mold the primary granules into secondary granules. | 05-12-2011 |
20120160060 | USE OF BIMODAL CARBON DISTRIBUTION IN COMPACTS FOR PRODUCING METALLIC IRON NODULES - A method for use in production of metallic iron nodules comprising providing a reducible mixture into a hearth furnace for the production of metallic iron nodules, where the reducible mixture comprises a quantity of reducible iron bearing material, a quantity of first carbonaceous reducing material of a size less than about 28 mesh of an amount between about 65 percent and about 95 percent of a stoichiometric amount necessary for complete iron reduction of the reducible iron bearing material, and a quantity of second carbonaceous reducing material with an average particle size greater than average particle size of the first carbonaceous reducing material and a size between about 3 mesh and about 48 mesh of an amount between about 20 percent and about 60 percent of a stoichiometric amount of necessary for complete iron reduction of the reducible iron bearing material. | 06-28-2012 |
Entries |
Document | Title | Date |
20080196547 | Method for the Manufacture of Liquid-Metal Composite Contact - A method of manufacturing liquid-metal composite contacts, where fabric of high-melting metal based wire is in the form of a strip, rolled into a cylindrical workpiece, and installed into a matrix. The workpiece is then pressed, reduced in an environment of hydride hydrogen in a vacuum furnace, and soaked with low-melting metal or alloy, where the soaking of the structure is performed with three metals, tin (Sn), indium (In) and gallium (Ga) within three sequential stages lasting 10 to 20 minutes each, namely, the structure is first soaked with liquid tin at a temperature of 750 to 1150° C., then with liquid indium at the temperature of 750 to 1000° C., and third with liquid gallium at the temperature of 700 to 900° C. The amount of liquid tin, indium, and gallium is proportional to eutectic mixture and volume of the pores in the structure. | 08-21-2008 |
20080236335 | METHOD AND SYSTEM FOR THE SUPPLY OF HOT DIRECT REDUCED IRON FOR MULTIPLE USES - The present invention relates generally to a method and system for the supply of a continuous stream of hot direct reduced iron (HDRI) from a direct reduction (DR) shaft furnace or direct reduced iron (DRI) reheating furnace to a point outside of the DR shaft furnace or DRI reheating furnace where the HDRI stream is split into at least two HDRI streams. The first HDRI stream is sent continuously to a hot briquetting plant by gravity in a closed duct system. The second HDRI stream is sent continuously to an adjacent melting furnace also by gravity in a closed duct system, with a surge bin and feeders, or by a combination of gravity in a closed duct system, also with a surge bin and feeders, and a generally horizontal charge conveyor. Optionally, a third HDRI stream is employed to continuously feed multiple hot transport vessels. | 10-02-2008 |
20090031855 | POROUS BODIES AND METHODS - Systems and methods for treating a fluid with a body are disclosed. Various aspects involve treating a fluid with a porous body. In select embodiments, a body comprises ash particles, and the ash particles used to form the body may be selected based on their providing one or more desired properties for a given treatment. Various bodies provide for the reaction and/or removal of a substance in a fluid, often using a porous body comprised of ash particles. Computer-operable methods for matching a source material to an application are disclosed. Certain aspects feature a porous body comprised of ash particles, the ash particles have a particle size distribution and interparticle connectivity that creates a plurality of pores having a pore size distribution and pore connectivity, and the pore size distribution and pore connectivity are such that a first fluid may substantially penetrate the pores. | 02-05-2009 |
20090100968 | Method and apparatus for manufacturing high-purity hydrogen storage alloy Mg2Ni - The present invention provides a method and apparatus for manufacturing high-purity hydrogen storage alloy Mg | 04-23-2009 |
20090193934 | PROCESS FOR DE-OILING STEELMAKING SLUDGES AND WASTEWATER STREAMS - The present invention is directed to a process for treating an oily mixture consisting of hydrocarbons, solid particles, and water. The steps of the process include placing the oily mixture into a reactor chamber, purging the reactor chamber with an inert gas, and creating a steam bath within the inert gas filled reactor chamber, the steam surge freeing hydrocarbon matter from the solid particles. The process further includes elevating reactor chamber temperature to a boiling point temperature corresponding to the hydrocarbons in the oily mixture, the elevated temperature vaporizing the hydrocarbons are vaporized within inert atmosphere. The reaction chamber is vented and the off-gas is processed into a hydrocarbon product while the de-oiled solid particles are discharged from the reaction chamber as a raw material or for disposal. | 08-06-2009 |
20090320645 | Anti-Caking Agent - The present invention relates to providing anti-caking agent and additive for granulated blast furnace slag or mechanically stabilized product thereof. | 12-31-2009 |
20100058892 | Method for Preheating Iron Agglomerates - A method for preheating iron agglomerate by a hot gas stream having the following steps:
| 03-11-2010 |
20100107815 | USE OF ALUMINA-CARBON AGGLOMERATES IN THE CARBOTHERMIC PRODUCTION OF ALUMINUM - An agglomerate comprising alumina, carbon, and a binder for use in a vapor recovery reactor of a carbothermic alumina reduction furnace is disclosed. A method for using alumina-carbon agglomerates to capture aluminum vapor species and utilize waste heat from off-gases in a vapor recovery reactor to form a recyclable material is also disclosed. | 05-06-2010 |
20100206132 | METHOD FOR TREATING SLAG FLOWING FROM A METALLURGICAL VESSEL AND A DEVICE FOR CARRYING OUT SAID METHOD - The invention relates to steel production in the steel and iron industry. The inventive method consists in dividing a solid slag stream which flows from a metallurgical vessel and falls down, into individual streams along the solid stream, in forcedly cooling the thus obtained individual streams, in dividing the individual streams into parts (pieces) by cutting across the movement thereof, in forcedly cooling said parts and transferring to a belt conveyor, on which said separate parts/pieces are forcedly cooled and transported away from the vessel. A shaped (with containers) conveyor belt, on which the slag pieces are crushed by means of a cylindrical roll, is used for additional crushing. The inventive device for carrying out the totality of the above-listed operations, comprises at least three throat grates which are horizontally positioned in an assembled body and one of which is provided with a drive for carrying out reciprocating motion. The device also comprises a drive for displacing to/from the vessel. In the position closest to the vessel, the device is fed with air and water from a stationary plant for forcedly cooling the individual slam streams and the parts (pieces) of slam. The throat grate displacing drives and a conveyor belt drive are mounted on the device assembled body, and the roll and a drive for rotating it, when the shaped belt is used, are fastened thereto. The ribs of the throat grate are made from tensioned steel ropes. | 08-19-2010 |
20100251855 | SHAFT FURNACE AND METHOD FOR OPERATING A FURNACE - The invention relates to a method for operating a shaft furnace ( | 10-07-2010 |
20110000337 | SILICA REMOVAL FROM PREGNANT LEACH SOLUTIONS - The present invention relates generally to a process for removing dissolved or colloidal silica from a pregnant leach solution (“PLS”). More particularly, an exemplary embodiment of the present invention relates to a process which mixes PLS with an acid source, preferably lean electrolyte, to induce formation of colloidal silica that can then be collected and removed. Additionally, in an exemplary embodiment of the present invention, at least one silica seeding agent is added to induce formation of colloidal silica, at least one flocculant is added to induce aggregation of the colloidal silica, and a solid-liquid separation process is utilized to remove advantageous amounts or substantially all of the colloidal silica, thereby providing relief from supersaturation of dissolved silica in the metal recovery processes. | 01-06-2011 |
20110048170 | METHODS FOR CONTROLLING METAL NANOSTRUCTURES MORPHOLOGY - Described herein are methods of controlling metal nanowire morphologies by adjusting the reaction conditions of a polyol synthesis. In particular, by purging the reaction with an inert gas, batch-to-batch consistency can be achieved. | 03-03-2011 |
20110061495 | INDIUM ADSORBENT, INDIUM ADSORBENT PRODUCING METHOD, AND INDIUM ADSORPTION METHOD - An indium adsorbent includes a polymer material having a template architecture with respect to indium, the indium adsorbent having an adsorption selection rate of indium with respect to zinc of 2.0 or more. | 03-17-2011 |
20110209576 | METHOD FOR OPERATING A BLAST FURNACE AND BLAST FURNACE INSTALLATION - A method for operating a blast furnace and a corresponding blast furnace, the method including recovering top gas from the blast furnace, submitting at least a portion of the top gas to a recycling process, and feeding the recycled top gas back into the blast furnace, where the recycling process includes feeding the recovered top gas to a reformer unit, feeding volatile carbon containing material to the reformer unit, proceeding to flash gasification of the volatile carbon containing material in the reformer unit, at a temperature between 1100 and 1300° C., and thereby producing devolatised carbonaceous material and synthesis, and allowing the devolatised carbonaceous material and synthesis gas to react with the recovered top gas. | 09-01-2011 |
20110283833 | DROSS COOLING SYSTEM AND COOLING METHOD - Embodiments of an aluminum dross cooling head are disclosed. The cooling cooperates with a material container encapsulate dross and reduce thermiting of the dross. In one embodiment, the cooling head also serves as a compression head when forced into the dross by a cooperating dross press assembly. | 11-24-2011 |
20120073405 | DRY PROCESSING METHOD AND SYSTEM FOR CONVERTER SLAG IN COPPER SMELTING - The present invention provides a processing method for converting slag ejected from a converter in a copper smelting process to raw materials for iron manufacture. The processing method is for converter slag containing 1 mass % or more of Cu produced in a copper smelting process. The processing method comprises a step of charging the converter slag in a reduction furnace, and a step of conducting a heat reduction of a zinc content and a copper content contained in the slag and removing a reduced zinc by volatilization in the reduction furnace. The removal of the reduced zinc by volatilization is conducted in a condition in which an air fuel ratio of a volume of air blowing to an input of a reductant is controlled to 0.25 to 1.0. | 03-29-2012 |
20120152058 | GASIFIER ADDITIVES FOR IMPROVED REFRACTORY LIFE - Embodiments disclosed herein provide hydrocarbon additives and methods of making and using the same. The additives are suitable for use in conjunction with gasifiers, furnaces, or other high-temperature vessels. The additives may be part of an input stream to a reaction vessel of a hydrocarbon gasifier. The additives may include materials that at least partially reduce the infiltration of slag into the refractory material. | 06-21-2012 |
20120204678 | METHOD AND APPARATUS FOR PRODUCING CARBON IRON COMPOSITE - Carbon iron composite is produced by feeding a formed product of a carbon-containing substance and an iron-containing substance into a carbonization furnace, carbonizing the formed product in a carbonization zone, blowing a coolant gas into the furnace through a coolant-gas-blowing tuyere disposed in a cooling zone to cool carbon iron composite, exhausting a furnace gas through an outlet in a top portion, and discharging the carbon iron composite through a lower portion of the cooling zone. | 08-16-2012 |
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 |
20120216655 | DROSS COOLING SYSTEM AND COOLING METHOD - Embodiments of an aluminum dross cooling head are disclosed. The cooling cooperates with a material container encapsulate dross and reduce thermiting of the dross. In one embodiment, the cooling head also serves as a compression head when forced into the dross by a cooperating dross press assembly. | 08-30-2012 |
20120272787 | PROCESS FOR INHIBITING PARTICULATE EMISSION DURING FRICTION OF HEAT-TREATED IRON ORE PELLETS AND USE OF AN ALCOHOL BY-PRODUCT TO INHIBIT PARTICULATE EMISSION - A process for the inhibition of particulate emission during friction of heat-treated iron ore pellets includes the following steps: a) removal of heat-treated iron ore pellets at a temperature of 200° C.; and b) spraying of an alcohol by-product on pellets. The use of an alcohol by-product as an inhibitor of particulate emission is further described, with the alcohol by-product being sprayed on heat-treated iron ore pellets, which can partially or completely replace water during the handling, stacking, loading, and unloading of materials such as pellets, granules, fines, and other products from iron ore and other minerals. This process significantly reduces the emission of particulates in an operational area. | 11-01-2012 |
20130032006 | METHOD FOR INDUCING A VOLUMETRIC CHANGE IN A NANOPOROUS MATERIAL - The invention is directed to a method for inducing a surface stress-induced volumetric change in a nanoporous material and to a device for carrying out the method. The method of the invention comprises—accumulating polar molecules onto the surface of the nanoporous material by physical adsorption of the polar molecules from the vapour phase thereby inducing surface stress to said surface; or—dissipating accumulated polar molecules from the surface of the nanoporous material by physical desorption of the polar molecules into the vapour phase thereby inducing surface stress to said surface, wherein the nanoporous material comprises a nanoporous metal or alloy. The device comprises a) a nanoporous metal material which, upon physical adsorption from the vapour phase or physical desorption into the vapour phase of polar molecules onto or from the surface of the nanoporous metal material, exhibits a volumetric change; and b) a mechanism for detecting and/or transferring the volumetric change. | 02-07-2013 |
20130047788 | METHOD AND DEVICE FOR PROCESSING FLUE DUST - The method and the device serve to treat the flue dust formed during the production of nonferrous metals. After the addition of sulfur and/or a sulfur compound, the flue dust is heated, and volatile compounds are separated in a downstream offgas treatment unit. The flue dust is heated in an inert atmosphere. | 02-28-2013 |
20130074653 | METHOD FOR PRODUCING RAW MATERIAL FOR FERRONICKEL SMELTING FROM LOW GRADE NICKEL OXIDE ORE - Provided is a method for producing ferronickel from a nickel sulfide or a mixed sulfide containing nickel and cobalt, obtained by hydrometallurgy of nickel oxide ore or obtained from scraps or products in process. The method for producing a ferronickel raw material is to form the ferronickel raw material from a nickel sulfide or a mixed sulfide containing nickel sulfide and cobalt sulfide, wherein treatments are performed through the following steps: (1) redissolution step, (2) deferrization step, (3) solvent extraction step, (4) hydroxylation step, (5) roasting step, and (6) washing and calcining step. | 03-28-2013 |
20130125705 | METAL DROSS CONFINEMENT UNIT AND ASSOCIATED METHOD - The present document describes a method and confinement unit for stopping a chemical reaction involving hot metal dross and a gas in the surrounding environment. The method comprises transferring the hot metal dross in a dross pan and placing the dross pan with the metal dross therein in the gastight chamber. Then, the dross pan is sealed with the hot metal dross therein into a gastight chamber of a fixed interior volume. The chemical reaction occurring inside the gastight chamber depletes a limited amount of gas present inside the gastight chamber, thereby stopping once the gas is completely depleted. The gastight chamber is shaped and sealed to withstand a pressure differential created by the depleting of the gas in the fixed interior volume, until the hot dross is cooled and the chemical reaction has stopped. | 05-23-2013 |
20130205949 | METHOD, ARRANGEMENT, AND PELLETISING PLANT - This invention concerns a method during the oxidation and sintering of pellets ( | 08-15-2013 |
20130220075 | Method, Arrangement and Pelletising Plant - This invention concerns a method for the oxidation and sintering of pellets | 08-29-2013 |
20130220076 | METHOD, ARRANGEMENT, AND PELLETISING PLANT - This invention concerns a method for the heating of a medium in a compartment | 08-29-2013 |
20140144290 | MIXED COLLECTOR COMPOSITIONS - Collector compositions and methods for making and using same are provided. The collector can include one or more etheramines and one or more amidoamines. A liquid suspension or slurry comprising one or more particulates can be contacted with the collector to produce a treated mixture. A product can be recovered from the treated mixture that includes a purified liquid having a reduced concentration of the particulates relative to the treated mixture, a purified particulate product having a reduced concentration of liquid relative to the treated mixture, or both. | 05-29-2014 |
20140202285 | METHOD FOR TREATING WASTE GASES FROM PLANTS FOR PIG IRON PRODUCTION - A method and a system for treating waste gases ( | 07-24-2014 |
20140238194 | DIRECT REDUCTION OF IRON (DRI) PELLET TREATMENTS - An aspect provides a method of treating direct reduced iron (DRI) pellets, by applying a foam to the DRI pellets. The foam may include a foam having an expansion ratio of about 20-40 and a bubble size of about 200 microns or less. The foam may include one or more additives, such as anti-corrosion agent(s), oxidizing agents, and dust reducing binder(s). The foam(s) may be applied in a single stage or in multiple stages and may be applied to hot or cold DRI pellets. Other aspects are described and claimed. | 08-28-2014 |
20140318317 | SYSTEMS AND METHODS FOR EXTRACTING PRECIOUS METAL FROM FOULED CARBON - A system for ashing carbon includes a vertically oriented burner column having a first end and an opposing end with an interior chamber therebetween. The burner column has an aperture at the first end and a suction port proximal to the second end, the aperture and the suction port in communication with the interior chamber. The system also comprises a porous media screen located in the interior chamber and positioned between the first end and the second end of the burner column. The media screen is adapted to hold ignited carbon containing a precious metal therein. The system also contains a pump that is coupled to the suction port. The pump is configured to apply a negative pressure to the interior chamber of the burner column to draw air into the interior chamber via the aperture. The drawn air passes through the ignited carbon at a desired flow rate to achieve a temperature of the carbon suitable for ashing the carbon. | 10-30-2014 |