| Patents for C21B 15 - Other processes for the manufacture of iron from iron compounds (585) |
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| 12/02/2010 | US20100300248 Recovering Metal Values from a Metalliferrous Material |
| 12/01/2010 | CN101457270B Method and device for preparing high quality high ferrotitanium alloy based on aluminothermy reduction |
| 11/30/2010 | CA2462831C Method for manufacturing titanium oxide-containing slag |
| 11/09/2010 | US7829546 applying an acid solution to the metal oxide substrate; mixing a solution containing the fine particles ( Au, Ag, Pt etc.) with a solution containing a self-organizing material (DNA, RNA, protein, Sugar, lipid); applying the mixed solution to the substrate after removing the acid solution, then drying |
| 10/21/2010 | US20100263487 Process and plant for producing char and fuel gas |
| 10/20/2010 | CN101586185B Method for separating and recycling arsenic and iron from biological oxidation solution of sulfide ore |
| 10/19/2010 | US7815709 Alkaline electro-hydrometallurgical process for Zn extraction from electric arc furnace dust |
| 09/30/2010 | US20100244336 LOW NOx FUEL INJECTION FOR AN INDURATING FURNACE |
| 09/15/2010 | CN101440416B Iron increase and phosphorous reduction method for oolitic high phosphorus hematite |
| 09/14/2010 | US7794677 Reduction of copper content in the molybdenite concentrate |
| 09/14/2010 | US7794521 heating and decompositing the organometallic compounds, metal complexes, metal coordination compounds; temperature control no greater than 500 degrees C.; use as catalysts in the production of materials such as fuels, lubricants, refrigerants, polymers, drugs, catalytic converter of automobiles |
| 09/14/2010 | CA2353225C Process for extraction of metals |
| 09/09/2010 | US20100224028 Method for producing hot briquette iron using high-temperature reduced iron and method and apparatus for controlling temperature of reduced iron for hot forming |
| 08/19/2010 | US20100208765 Furnace damper control system and method |
| 07/21/2010 | CN101781719A Method for recovering rare earth from oil shale waste slag |
| 07/07/2010 | CN101768669A Method for processing cobalt-copper alloy at room temperature |
| 06/23/2010 | CN201512566U Metal reduction device used for extracting at least one metal in metallic material |
| 06/02/2010 | CN101186969B Method for separating rare earth, iron, copper, cobalt and tungsten from alloy |
| 05/26/2010 | CN101311281B Green metallurgical process for integrated utilization of nickel laterite ore |
| 05/19/2010 | CN101709381A Method for producing high-titanium iron |
| 03/25/2010 | CA2680810A1 High temperature pyrometallurgical reduction process for the recovery of fused refractory metal oxides and the production of vanadium-rich iron alloys from mining residues or metallurgical wastes by produced during the beneficiation and upgrading of titania slags |
| 03/25/2010 | CA2680729A1 Thermal reduction process for the recovery of refractory metal oxides and the production of vanadium-rich iron alloys from mining residues or metallurgical wastes by-produced during the beneficiation and upgrading of titania slags |
| 03/23/2010 | US7682419 Hydrometallurgical process for the most complete metal extraction while preventing elementary sulfur formation; sulfide minerals oxidation in aqueous slurry using nitrogen oxides under controlled acidity; sulfuric acid formed neutralized constantly by calcium/magnesium salts |
| 03/18/2010 | WO2010028459A1 Direct reduction |
| 03/10/2010 | CN101665851A Three-step metal reducing method |
| 03/04/2010 | US20100050812 Process for Production of Elemental Iron |
| 02/23/2010 | CA2229232C Method for recovering nickel hydrometallurgically from two different nickel mattes |
| 02/16/2010 | US7662210 Apparatus for manufacturing molten irons by injecting fine coals into a melter-gasifier and the method using the same |
| 02/11/2010 | US20100031776 System and method of producing metallic iron |
| 02/04/2010 | US20100024599 Method and device for producing molten material |
| 02/03/2010 | CN101638704A Method for extracting iron from copper smelting waste residue |
| 01/21/2010 | US20100011908 Pressure control in direct smelting process |
| 01/19/2010 | US7648689 Process for the production of InP fine particles and InP fine particle dispersion obtained by the process |
| 01/12/2010 | CA2307500C Method for removing contaminants from process streams in metal recovery processes |
| 12/23/2009 | CN101608258A Method for industrially extracting cobalt, copper and iron by taking cobalt-copper alloy as raw material |
| 12/22/2009 | US7635457 Method for heap and dump leaching coupled with solvent extraction for metal recovery |
| 12/22/2009 | US7635407 Exothermic pressure leach autoclave circuits |
| 12/17/2009 | US20090308204 Method and apparatus for reducing metalliferous material to a reduction product |
| 12/15/2009 | US7632425 Composition and associated method |
| 12/15/2009 | US7632335 Heating reducible mixture (e.g., reducible micro-agglomerates; reducing material and reducible iron bearing material; reducible mixture including additives such as a fluxing agent; compacts, etc.) on hearth material layer in presence of other carbonaceous material |
| 11/26/2009 | US20090288739 Binder-comprising thermoplastic compositions for producing shaped metallic bodies |
| 11/25/2009 | CN101586185A Method for separating and recycling arsenic and iron from biological oxidation solution of sulfide ore |
| 11/19/2009 | US20090282950 Process for producing metallic iron |
| 10/20/2009 | US7604680 Producing nickel-base, cobalt-base, iron-base, iron-nickel-base, or iron-nickel-cobalt-base alloy articles by reduction of nonmetallic precursor compounds and melting |
| 10/20/2009 | US7604679 Fine nickel powder and process for producing the same |
| 10/08/2009 | US20090249922 Process for the production of steel using a locally produced hydrogen as the reducing agent |
| 09/24/2009 | WO2009066167A3 Amines quantification method in residues of the flotation of iron ore |
| 09/15/2009 | US7588624 Method of producing gold nanoprisms |
| 08/25/2009 | US7578965 purification by electrolytic refining; uniform thickness distribution, has a purity of 4N (99.99%) or higher, and is used in forming a capacitor electrode of a semiconductor memory |
| 08/06/2009 | US20090193933 Pre-Processing Materials Using Encapsulation Technologies |
| 06/24/2009 | EP1017619B1 Oxygen-fuel boost reformer process and apparatus |
| 06/17/2009 | CN101457270A Method and device for preparing high quality high ferrotitanium alloy based on aluminothermy reduction |
| 05/27/2009 | CN101440416A Iron increase and phosphorous reduction method for oolitic high phosphorus hematite |
| 05/20/2009 | CN100489126C Method of reclaiming chemical industry products by using industrial slag containing vanadium, chromium, iron and phosphorous |
| 05/19/2009 | US7534407 Recovery of nickel |
| 04/23/2009 | US20090102103 Infrared Light Sensors for Diagnosis and Control of Industrial Furnaces |
| 04/21/2009 | US7520915 Heating the mixture of water, diethylene glycol, tetramethylammonium hydroxide, nickel acetylacetonate; separating nickel powder; uniform particle sizes with a low production cost and high productivity; inner electrode material for multi layer ceramic capacitor and wiring material of electric apparatus |
| 04/16/2009 | US20090095132 Processing of metal chloride solutions and method and apparatus for producing direct reduced iron |
| 04/09/2009 | US20090090217 Method for producing liquid pig iron or liquid steel intermediate products from fine-particled material containing iron oxide |
| 03/10/2009 | US7501380 Hydrogel polymer granules capable of selectively removing toxic dissolved metal species from water containing abundant innocuous species, and spacer particles which minimize contact between contiguous polymer granules is provided for reducing the impedance of water caused to flow through a confined bed |
| 03/05/2009 | DE102007041596A1 Production of low-alloyed pig iron molded pieces made from high-grade steel dust comprises hardening precipitated filter dust and placing the hardened dust in a reducing device to form pig iron |
| 02/11/2009 | CN101362599A Method for simultaneously producing acetylene stones, ferrosilicium and high-purity CO gas |
| 02/11/2009 | CN100460523C Technique for reclaiming iron from waste slag in production of boric acid and magnesium sulphate from ludwigite |
| 01/06/2009 | US7473286 A double-chamber lock has tubular shaft furnace containing a water-cooled double jacket of steel, and a dry dust-removing device; for the production of carbon monoxide gas having a high degree of purity, produced from coke using oxygen |
| 12/11/2008 | WO2007149541A3 Methods for making carbide-metal nanocomposite powders |
| 12/11/2008 | US20080302655 Electrochemical Method and Apparatus For Removing Oxygen From a Compound or Metal |
| 12/11/2008 | US20080302212 Method for Manufacturing Molten Irons and Apparatus for Manufacturing Molten Irons |
| 12/04/2008 | US20080295647 Minimizing a fuel rate by injecting fine carbonaceous materials into the melter-gasifier and supplying a reducing gas having enhanced reduction power made from volatile matters from the lumped carbonaceous materials and the fine carbonaceous materials; efficiency steels; industrial scale |
| 12/03/2008 | CN100439244C Co发生器 Co generator |
| 11/26/2008 | CN100436601C Method for separating and extracting iron, vanadium and titanium from vanadium-titanium magnetite |
| 10/02/2008 | WO2007136389A3 Process for the use of metal carbonyls for the production of nano-scale metal particles |
| 10/02/2008 | US20080236335 conveying hot direct reduced iron from a direct reduction shaft furnace or direct reduced iron reheating furnace, to hot briquetting plant by gravity and a second hot direct reduced iron stream, to an adjacent melting furnace, by gravity and/or a horizontal charge conveyor |
| 09/25/2008 | US20080229881 Solid metal material; controlling particle size distribution; supplying hydrocarbons and oxygen; using fluidized beds; controlling agglomeration |
| 09/25/2008 | DE10297448B4 Verfahren zur Herstellung von Tantal- und/oder Niobpulvern mit hoher Oberflächenkennzahl A process for the production of tantalum and / or niobium powders having a high specific surface area |
| 09/10/2008 | CN100417751C Preparation method of ferromagnetic nano wire |
| 08/21/2008 | US20080196549 Direct Reduction Process Using a Single Fluidised Bed |
| 07/16/2008 | CN101223293A Processing of metal chloride solutions and method and apparatus for producing direct reduced iron |
| 07/03/2008 | WO2008063897A3 Multiple hearth furnace for reducing iron oxide |
| 05/29/2008 | WO2008063897A2 Multiple hearth furnace for reducing iron oxide |
| 05/29/2008 | CA2669314A1 Multiple hearth furnace for reducing iron oxide |
| 05/28/2008 | CN101186969A Method for separating rare earth, iron, copper, cobalt and tungsten from alloy |
| 05/28/2008 | CN100390046C Synthesis method of iron nanotube array |
| 05/22/2008 | US20080115627 Metal Extraction In Liquid Or Supercritical-Fluid Solvents |
| 04/16/2008 | CN101163804A Electrochemical method and apparatus for removing oxygen from a compound or metal |
| 04/10/2008 | WO2008042997A1 System and method for producing metallic iron |
| 04/10/2008 | WO2008042996A1 System and method of producing metallic iron |
| 04/10/2008 | CA2665562A1 System and method of producing metallic iron |
| 04/02/2008 | CN101153350A Technique for industrialized development and utilization of red mud |
| 03/27/2008 | WO2008036418A2 Sailboat control apparatus and method |
| 03/20/2008 | US20080069763 Method for manufacturing titanium oxide-containing slag |
| 02/27/2008 | EP1891246A1 Processing of metal chloride solutions and method and apparatus for producing direct reduced iron |
| 02/27/2008 | CN101133170A Production of ferronickel |
| 02/12/2008 | US7329301 Silver nanoparticles made in solvent |
| 02/07/2008 | WO2007145972A3 Pre- processing materials using encapsulation technologies |
| 02/06/2008 | CN101117660A Method for comprehensive utilization of vanadium titanium and iron ore concentrate by using rotary hearth furnace reduction-grinding - separation |
| 01/30/2008 | CN101113488A Method for comprehensive utilization of V-Ti-bearing iron ore concentrate by using tunnel kiln reduction-grinding - separation |
| 01/17/2008 | US20080011126 Production of Ferronickel |
| 12/19/2007 | EP1866448A1 Electrochemical method and apparatus for removing oxygen from a compound or metal |
| 12/06/2007 | WO2005079153A3 Solid-fluid composition and uses thereof |
| 12/05/2007 | CN101082069A Technique for reclaiming iron from waste slag in production of boric acid and magnesium sulphate by collbranite |