| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 04/22/2009 | CN101413040A Apparatus and method for producing direct reduction iron |
| 04/15/2009 | EP2047000A1 Method and system for producing metallic iron nuggets |
| 04/15/2009 | EP2046999A2 Method and apparatus for reducing metalliferous material to a reduction product |
| 04/15/2009 | CN201220948Y Apparatus for preventing high temperature directly reduced iron from being reoxidated |
| 04/15/2009 | CN201220156Y High-efficient equipment for evenly mixing material |
| 04/15/2009 | CN100478454C Method of mfg. metal iron |
| 04/09/2009 | WO2009043540A1 Method for purifying the crude gas from a solid matter gasification |
| 04/09/2009 | WO2006127037A3 Atmospheric pressure processing using microwave-generated plasmas |
| 04/09/2009 | US20090090216 Process for producing molten iron and apparatus for producing molten iron |
| 04/09/2009 | CA2734601A1 Process for the purification of crude gas from solids gasification |
| 04/09/2009 | CA2694584A1 Process for the purification of crude gas from solids gasification |
| 04/08/2009 | CN201217615Y Special slings for melting and reducing dynamic state distributor of ironmaking apparatus |
| 04/08/2009 | CN101405414A A forehearth |
| 04/08/2009 | CN100476333C Method and equipment for discharging reduction products moving type siege furnace |
| 04/07/2009 | US7514033 Molten metal level burner output control for aluminum melt furnace |
| 04/07/2009 | US7513929 Operation of iron oxide recovery furnace for energy savings, volatile metal removal and slag control |
| 04/07/2009 | US7513729 Method and device for distributing a lumpy bulk material |
| 04/01/2009 | CN101397598A Coal fine preparation, blowing method and device from packed-bed smelting reduction furnace |
| 04/01/2009 | CN101397597A Method for producing spongy iron by direct reduction of dry coal powder gasification and hot coal gas fine ore fluidized bed |
| 03/26/2009 | WO2009037982A1 Process for producing hot briquette iron using high-temperature reduced iron, and method and apparatus for temperature control of reduced iron for hot forming for the process |
| 03/26/2009 | WO2009037587A2 Method and apparatus for the direct reduction of iron ores utilizing gas from a melter-gasifier |
| 03/25/2009 | EP2038434A1 Direct smelting vessel and cooler therefor |
| 03/25/2009 | CN101395286A Reduction processing of metal-containing ores in the presence of microwave and RF energy |
| 03/25/2009 | CN101392304A Energy-saving and environment friendly reductive sponge iron shaft furnace |
| 03/25/2009 | CN101392192A Conversion of coke oven gas carbon dioxide and gas-based shaft kiln directly reduced iron production method |
| 03/25/2009 | CN100471960C Method and apparatus for supplying solid feed materials for a direct smelting process |
| 03/19/2009 | WO2009035053A1 Process for producing reduced iron pellets, and process for producing pig iron |
| 03/19/2009 | CA2707423A1 Method for producing reduced iron pellet and method for producing pig iron |
| 03/18/2009 | CN101389916A Screw conveyor for discharging reduced iron from rotary hearth reduction furnace |
| 03/18/2009 | CN101389773A Electric arc furnace steelmaking |
| 03/18/2009 | CN101386897A Iron-smelting technology of SDRF furnace |
| 03/18/2009 | CN101386896A Ore coal, melting ironmaking method after direct reduction-flotation-agglomeration |
| 03/18/2009 | CN100470178C A method of relining furnace lining |
| 03/18/2009 | CN100469897C Method and apparatus for producing reduced iron |
| 03/17/2009 | US7504065 Direct smelting plant and process |
| 03/17/2009 | CA2332153C A method of relining a vessel |
| 03/17/2009 | CA2242375C Method of producing molten pig iron or steel pre-products from ore |
| 03/12/2009 | WO2009031537A1 Process for manufacturing molded products of direct-reduced iron and process for manufacturing pig iron |
| 03/12/2009 | WO2009030064A1 A process for non-coke smelting iron and steel |
| 03/12/2009 | WO2009007007A9 Process and plant for reducing solids containing iron oxide |
| 03/12/2009 | US20090065986 Apparatus for injecting solid particulate material into a vessel |
| 03/12/2009 | CA2698234A1 Method of producing reduced iron cast, and method of producing pig iron |
| 03/12/2009 | CA2694630A1 Direct processing of ferrotitania ores and sands |
| 03/11/2009 | EP2034033A2 A method for manufacturing briquette directly using coal with wide range of size, the method using the same and the apparatus using the same |
| 02/26/2009 | US20090051083 Reduction furnace |
| 02/25/2009 | CN101372719A Noncoking steel smelting method |
| 02/25/2009 | CN100463975C Production of sponge iron |
| 02/24/2009 | US7494615 Supplying solid feed materials for a direct smelting process |
| 02/19/2009 | US20090045558 Screw conveyer of rotary hearth furnace for discharging reduced iron |
| 02/18/2009 | EP2024521A2 Method and apparatus for producing direct reduced iron |
| 02/18/2009 | CN101371306A Apparatus for manufacturing molten irons |
| 02/17/2009 | US7491360 Mounting enclosure for burners and particle injectors on an electric arc furnace |
| 02/12/2009 | WO2009019939A1 Diverter for high temperature reduction metal |
| 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 | CN101365810A A dust recycling system for enhanced availability of Corex |
| 02/11/2009 | CN101365809A Apparatus for manufacturing molten irons |
| 02/05/2009 | WO2009017019A1 Method for reducing electric furnace dust |
| 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 |
| 02/04/2009 | CN101358260A Waste heat recovery from smelting reduction ironmaking in rotary hearth furnace and steam production apparatus |
| 02/04/2009 | CN101358259A Waste heat recovery from smelting reduction ironmaking in heat pipe type rotary hearth furnace and steam production apparatus |
| 02/04/2009 | CN101358258A Coal reducing gas direct reduction metallurgical process in gas-based shaft kiln and system |
| 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 |
| 01/29/2009 | US20090025511 Method and apparatus for making metallic iron |
| 01/28/2009 | CN201186935Y Flow division control device for supplying electric stove with high temperature direct reduced iron |
| 01/28/2009 | CN101356289A Method for manufacturing molten irons and apparatus for manufacturing molten irons |
| 01/28/2009 | CN100455679C Method for drying molding containing oxidized metal, method for reducing oxidized metal and rotary hearty type metal reduction furnace |
| 01/28/2009 | CN100455678C Smelting reduction furnace coal-injection process |
| 01/28/2009 | CN100455677C Reduced iron mass cooling method and cooling device |
| 01/27/2009 | US7481965 Apparatus for injecting gas into a vessel |
| 01/22/2009 | DE102006062689B4 Schachtofen für die direkte Reduktion von Eisenoxid Shaft furnace for the direct reduction of iron oxide |
| 01/21/2009 | CN101348842A Oxygen top blown smelting reduction iron manufacturing process |
| 01/21/2009 | CN100453656C Furnace sidewall structure of rotary hearth furnace |
| 01/15/2009 | WO2009008256A1 Apparatus and method for treating waste gas for rotary hearth furnace-type reducing furnace |
| 01/15/2009 | WO2009007007A1 Process and plant for reducing solids containing iron oxide |
| 01/15/2009 | WO2008141839A3 Method and device for the treatment of product gas produced by pressure gasification of solid fuels |
| 01/15/2009 | DE102007032419A1 Verfahren und Anlage zur Reduktion von eisenoxidhaltigen Feststoffen Method and apparatus for reduction of iron oxide-containing solids |
| 01/15/2009 | CA2692943A1 Process and plant for reducing solids containing iron oxide |
| 01/14/2009 | EP2013369A2 Method for producing liquid pig iron or liquid steel intermediate products from fine-particled material containing iron oxide |
| 01/14/2009 | CN101346478A Method for manufacturing molten irons by injecting a hydrocarbon gas and apparatus for manufacturing molten irons using the same |
| 01/14/2009 | CN101343692A Carbon based reductive |
| 01/14/2009 | CN100451155C High-purity ferroboron |
| 01/14/2009 | CN100451133C Method and apparatus for producing directly reduced iron with coke oven gas |
| 01/08/2009 | US20090008841 Apparatus for Manufacturing Molten Irons |
| 01/07/2009 | CN100449010C Process for smelting ferrovanadium by extraction of vanadium from vanadium-containing errophosphorus |
| 01/06/2009 | US7473393 Method for discharging reduced product from a movable-hearth furnace and a discharging device |
| 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 | WO2009000409A1 Process and apparatus for producing iron sponge |
| 12/31/2008 | EP2009379A1 Screw conveyor for discharging reduced iron from rotary hearth reduction furnace |
| 12/31/2008 | CN101336302A Conveying system, combined system, and method for coupling metallurgical processes |
| 12/31/2008 | CN101333576A Ironmelting by coke for replacing washery coal shot |
| 12/31/2008 | CA2693003A1 Process and apparatus for producing iron sponge |
| 12/30/2008 | US7470310 Method and device for producing a static bed |
| 12/24/2008 | WO2008154689A1 Lance for injecting solid material into a vessel |
| 12/24/2008 | EP2004868A1 Reduction processing of metal-containing ores in the presence of microwave and rf energy |
| 12/24/2008 | EP2004865A1 A forehearth |