| Patents for C21B 11 - Making pig-iron other than in blast furnaces (2,381) |
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| 08/19/2009 | CN100529108C Modular furnace for reducing melting |
| 08/12/2009 | CN201288201Y Coal based ferrum redactum rotary kiln |
| 08/12/2009 | CN101503745A Dimeit ironmaking method directly using coal for ironmaking and Dimeit furnace |
| 08/05/2009 | CN201284349Y Cold state analog experiment apparatus for COREX high furnace distribution and air flow distribution |
| 08/05/2009 | CN101497933A Method for rapidly and directly reducing haematite or limonite into ferrous powder |
| 07/29/2009 | CN101492752A Reduction-fusion iron manufacturing process for coal-bearing pellets |
| 07/23/2009 | US20090183600 Method for producing metallic iron |
| 07/22/2009 | CN101487067A Industrial production method for directly producing iron and vanadium-titanium-aluminum alloy from vanadium-titanium magnet placer |
| 07/22/2009 | CN101487066A Industrial production method for directly producing iron and vanadium-titanium-aluminum alloy from iron concentrate |
| 07/16/2009 | WO2009086841A2 Furnace melting and rolling |
| 07/09/2009 | WO2009085907A2 System and method for producing metallic iron |
| 07/09/2009 | CA2709487A1 System and method for producing metallic iron |
| 07/08/2009 | CN101476009A Method for producing rear-axle housing of heavy-duty car |
| 07/08/2009 | CN101476008A Coke-free ironmaking process for titanium-containing magnet placer |
| 07/02/2009 | WO2009082125A2 Reducing furnace and apparatus for manufacturing molten iron comprising the same |
| 06/30/2009 | US7553793 Method and system for recovering catalyst for fuel cell |
| 06/30/2009 | US7553351 Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals |
| 06/30/2009 | CA2437254C Method for producing a melt iron in an electric furnace |
| 06/30/2009 | CA2315502C Control of molten metal level in a direct smelting vessel |
| 06/24/2009 | CN101463403A Nickel iron smelting technique by laterite nickel ore |
| 06/24/2009 | CN101463402A Method for producing nickel-cooling pig iron by using nickel ore and stainless steel byproduct |
| 06/17/2009 | EP1625238B1 Direct smelting plant |
| 06/03/2009 | CN201250242Y Non-blast furnace ironmaking furnace |
| 06/03/2009 | CN101448962A Method for manufacturing molten irons by injecting a hydrocarbon gas and apparatus for manufacturing molten irons using the same |
| 05/27/2009 | EP2061911A1 Method and apparatus for charging hot direct reduced iron from hot transport vessels into a melter or finisher |
| 05/13/2009 | CN101432445A Direct smelting plant |
| 05/13/2009 | CN101429582A Method for producing ferro-silicon alloy and calcium aluminate material with red mud and aluminum ash |
| 05/13/2009 | CN101429581A Method for producing ferro-silicon alloy and magnesium aluminate spinel with aluminum ash and white olivine |
| 05/13/2009 | CN101429580A Electric heating air burning magnetizing roasting furnace |
| 05/07/2009 | WO2009028909A3 Tuyere for manufacturing molten iron and method for injecting gas using the same |
| 04/29/2009 | CN100482808C Comprehensive utilization technique for low-grade laterite nickel ore |
| 04/22/2009 | CN201225816Y Ore reaction furnace |
| 04/22/2009 | CN201224737Y Final reducing furnace for non-blast furnace ironmaking |
| 04/22/2009 | CN101413040A Apparatus and method for producing direct reduction iron |
| 04/15/2009 | CN100478454C Method of mfg. metal iron |
| 04/09/2009 | WO2006127037A3 Atmospheric pressure processing using microwave-generated plasmas |
| 04/08/2009 | CN201217615Y Special slings for melting and reducing dynamic state distributor of ironmaking apparatus |
| 04/08/2009 | CN100476333C Method and equipment for discharging reduction products moving type siege furnace |
| 04/07/2009 | US7513729 Method and device for distributing a lumpy bulk material |
| 03/26/2009 | WO2009038140A1 Process for producing molten iron |
| 03/26/2009 | WO2009038139A1 Process for producing molten iron |
| 03/26/2009 | CA2698888A1 Method for manufacturing molten iron |
| 03/25/2009 | CN101392324A Technique for continuously smelting plurality of metalliferous material using rotary kiln and smelting furnace |
| 03/19/2009 | WO2009034837A1 Tuyere structure of smelting furnace |
| 03/17/2009 | CA2242375C Method of producing molten pig iron or steel pre-products from ore |
| 03/12/2009 | WO2009031369A1 Method of operating vertical furnace |
| 03/12/2009 | WO2009031368A1 Vertical furnace and method of operating the same |
| 03/12/2009 | WO2009031367A1 Vertical furnace |
| 03/12/2009 | WO2009007007A9 Process and plant for reducing solids containing iron oxide |
| 03/11/2009 | CN100467620C Melting method for dephosphorization under reducing atmosphere for high phosphate ore |
| 03/05/2009 | WO2009028909A2 Tuyere for manufacturing molten iron and method for injecting gas using the same |
| 03/05/2009 | WO2009028416A1 Iron bath type smelting reduction furnace |
| 03/05/2009 | WO2009028274A1 Method of treating residual flue gas and apparatus therefor |
| 03/05/2009 | WO2008051356A3 Microwave heating method and apparatus for iron oxide reduction |
| 03/05/2009 | CA2696872A1 Tuyere for manufacturing molten iron and method for injecting gas using the same |
| 03/04/2009 | CN201201953Y Fused state reduction furnace for producing molten iron |
| 02/12/2009 | WO2009019958A1 Method of suppressing slag forming in continuous melting furnace |
| 02/12/2009 | US20090039572 Microwave iron-making furnace |
| 02/11/2009 | EP2023068A1 Microwave iron-making furnace |
| 02/11/2009 | CN201193235Y High-temperature burden guiding device between pre-reducing furnace and final-reducing furnace |
| 02/11/2009 | CN201193234Y Oxygen port device of final reducing furnace for pure oxygen non blast furnace ironmaking |
| 02/11/2009 | CN201193233Y Pre-reducing furnace for non blast furnace ironmaking |
| 02/05/2009 | US20090031859 Reducing and melting raw material of iron oxide-containing material and carbonaceous reducing agent; heating after a powder and granular atmosphere control carbonaceous material is spread on hearth of heat-reducing furnace; no resolidification of carbon; solid phase, efficiency, stability |
| 02/05/2009 | US20090031858 Cold start-up method for a direct smelting process |
| 02/04/2009 | CN101358283A Technique for continuously smelting plurality of metalliferous material using rotary kiln and smelting furnace |
| 02/04/2009 | CN101358257A Microwave iron-making furnace |
| 02/04/2009 | CN100457924C Seal structure of solid feeding screw, and method of manufacturing reduced metal using the seal structure |
| 01/28/2009 | CN101353711A Carbonaceous material block molten iron bath reduction ironmaking desulphurization method |
| 01/22/2009 | DE102006062689B4 Schachtofen für die direkte Reduktion von Eisenoxid Shaft furnace for the direct reduction of iron oxide |
| 01/15/2009 | WO2009007007A1 Process and plant for reducing solids containing iron oxide |
| 01/15/2009 | CA2692943A1 Process and plant for reducing solids containing iron oxide |
| 01/14/2009 | CN201180144Y Combined oxygen wind gap for melting reduction iron-making furnace |
| 01/14/2009 | CN100451155C High-purity ferroboron |
| 01/08/2009 | WO2009005755A1 Method and apparatus for charging hot direct reduced iron from hot transport vessels into a melter or finisher |
| 01/07/2009 | CN101338347A Novel process for ironmaking without blast furnace |
| 01/06/2009 | US7473297 Vertical shaft melting furnace |
| 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 |
| 01/06/2009 | CA2254220C Reduction of iron ore in ore/coal mixtures |
| 12/31/2008 | WO2009001663A1 Process for production of granular metallic iron |
| 12/31/2008 | CN101333575A Process for pre-reducing fine iron ore and device thereof |
| 12/30/2008 | US7470310 Method and device for producing a static bed |
| 12/24/2008 | EP2004865A1 A forehearth |
| 12/24/2008 | CN101331239A Process for producing metallic iron |
| 12/18/2008 | US20080307926 Method for Determining the Properties of the Content of an Arc Furnace |
| 12/17/2008 | CN101323889A Direct smelting plant |
| 12/11/2008 | US20080302211 Moving separate or separable containers containing a mixture of iron oxide and carbonaceous material through the furnace zone to the discharge end; preheating; reducing; melting and fusing iron and slag formed; discharging from containers, and returning empty containers to the charging end of the furnace |
| 12/04/2008 | DE102007025663A1 Verfahren zur gesteuerten Koksumsetzung in Kupolöfen Method for the controlled Koksumsetzung in cupola furnaces |
| 12/03/2008 | CN100439244C Co发生器 Co generator |
| 11/25/2008 | US7455810 Metallurgical reactor for the production of cast iron |
| 11/13/2008 | WO2008134822A1 Improvements in the production of ferro-alloys |
| 11/13/2008 | CA2685210A1 Improvements in the production of ferro-alloys |
| 11/12/2008 | CN101305103A Method for the operation of a shaft furnace, and shaft furnace suitable for said method |
| 11/12/2008 | CN101302568A Waste slag comprehensive recovery and utilization method for non-ferrous metals industry |
| 11/12/2008 | CN100432239C Method of building a direct smelting plant |
| 11/05/2008 | EP1799875A4 Production of ferro-alloys |
| 11/05/2008 | CN100430496C Iron ore briquetting |
| 10/29/2008 | CN101294229A Non-blast furnace ironmaking method |
| 10/23/2008 | US20080257105 Inserting the tires at a slower rate into an electric arc furnace and separate from the scrap steel, as compared to batch feeding them or feeding them as tires and scrap steel bundles, so that larger quantities of tires at a specific controlled location and time may be used |
| 10/16/2008 | WO2008123962A1 Method and system for the supply of hot direct reduced iron for multiple uses |
| 10/15/2008 | EP1929051A4 Ore reduction process and titanium oxide and iron metallization product |