| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 08/29/2001 | EP1045928B1 Method for producing pig iron |
| 08/29/2001 | EP0946760B1 Method and device for producing silicon-rich foundry iron |
| 08/29/2001 | CN1310326A Method for changing furnace lining |
| 08/29/2001 | CN1070236C Direct reduction method and equipment for iron-containing metal oxide agglomerates |
| 08/28/2001 | US6280181 Withdrawal device for a shaft furnace |
| 08/23/2001 | US20010015516 Apparatus for injecting solid particulate material into a vessel |
| 08/22/2001 | EP1124995A1 Direct-current arc furnace comprising a centric charging shaft for producing steel and a method therefor |
| 08/22/2001 | EP0904416B1 Method of charging metalliferous material into a smelting-gasification zone |
| 08/22/2001 | CN1309723A Induction furnace for metal reduction and melting process |
| 08/21/2001 | US6277324 Apparatus for manufacturing molten pig iron and reduced iron by utilizing a fluidized bed |
| 08/21/2001 | US6277172 Method of charging metal carriers to a melt-down gasifying zone |
| 08/21/2001 | US6277168 Method for direct metal making by microwave energy |
| 08/16/2001 | EP1123982A1 Method and apparatus for electric steelmaking |
| 08/16/2001 | EP0748391B1 Fluidized bed type reduction apparatus for iron ore particles and its use for reducing iron ore particles |
| 08/15/2001 | CN1308137A 直接熔炼工艺 Direct smelting process |
| 08/14/2001 | US6273934 Method and an apparatus for producing metals and metal alloys |
| 08/14/2001 | US6273933 Method for blowing fine particles containing metal oxide into a reducing gas |
| 08/14/2001 | US6273932 Continuous metal melting process |
| 08/14/2001 | US6273931 Method for controlling a smelting reduction process |
| 08/09/2001 | US20010011787 Reduction vessel for the reduction of metal-oxide-bearing material |
| 08/08/2001 | EP0904415B1 Device for producing sponge iron |
| 08/08/2001 | CN1307645A Direct smelting process |
| 08/08/2001 | CN1069347C Melt reduction equipment and operating method |
| 08/07/2001 | US6270741 Operation management method of iron carbide production process |
| 08/07/2001 | US6270553 Production of metals and metal alloys; passing a gas at elevated temperature through bed of composite agglomerates, melting the metals, and collecting the molten metal |
| 08/07/2001 | US6270552 Rotary hearth furnace for reducing oxides, and method of operating the furnace |
| 08/07/2001 | US6270551 Process for treating metal oxide fines |
| 08/07/2001 | US6270550 In a shaft furnace using reducing gas; ore burden passes downward through autonomously operated zones of prereduction with countercurrent flow and metallization with cocurrent flow of rich fuel gas produced by external partial combustion |
| 08/07/2001 | CA2240706C Production of direct reduced iron with reduced fuel consumption and emission of carbon monoxide |
| 08/07/2001 | CA2202917C Plant and process for producing raw iron and/or sponge iron |
| 08/02/2001 | DE10103940A1 Vorrichtung zum Einspeisen von Gas in einen Kessel An apparatus for injecting gas into a vessel |
| 08/02/2001 | DE10103605A1 Vorrichtung zum Einspeisen von festem Partikelmaterial in einen Kessel An apparatus for feeding solid particulate material into a vessel |
| 08/01/2001 | EP1120618A2 A method of relining a vessel |
| 08/01/2001 | EP0948654B1 Method for producing liquid pig iron or steel fabricated materials and installation for implementing said method |
| 07/31/2001 | US6267799 Method of producing metals and metal alloys |
| 07/26/2001 | WO2001053544A1 Fluidized bed aggregate for reducing oxide-containing material |
| 07/26/2001 | WO2000047780A3 Method and apparatus for preheating of direct reduced iron used as feed to an electric arc furnace |
| 07/25/2001 | EP1117844A1 Method and installation for producing iron, especially steel |
| 07/25/2001 | EP0861335B1 Process for the destruction of rubber-based materials and automobile fragmentation residues |
| 07/25/2001 | CN1305534A Direct smelting vessel and direct smelting process |
| 07/24/2001 | US6264911 Production method of iron carbide |
| 07/24/2001 | US6264725 Method for producing liquid pig iron or steel fabricated materials and installation for implementing said method |
| 07/24/2001 | US6264724 Process for the production of spongy metal |
| 07/24/2001 | US6264722 Introducing carbon containing material and fine-particulate iron containing material into meltdown gasifying zone; introducing oxygen-containing gas to produce molten pig iron and/or steel prematerial, slag, coke and reducing gas |
| 07/24/2001 | US6264721 Method of operating rotary hearth furnace for reducing oxides |
| 07/18/2001 | EP1115890A1 Method for producing directly reduced metal in a multi-tiered furnace |
| 07/18/2001 | CN1068631C Process for production of liquid pig iron or liquid intermediate products of steel and plant for carrying out said process |
| 07/17/2001 | US6261531 Classification a fine grained iron for producing iron carbide |
| 07/11/2001 | EP1114195A1 A direct smelting process |
| 07/11/2001 | EP1114194A1 A direct smelting process and apparatus |
| 07/11/2001 | EP1114193A1 Method for heat-treating recyclings containing oil and iron oxide |
| 07/11/2001 | EP1114192A1 A process and an apparatus for producing metals and metal alloys |
| 07/11/2001 | EP1114191A1 A direct smelting process |
| 07/10/2001 | US6258149 Method of producing reduced iron agglomerates |
| 07/10/2001 | US6258148 Method of charging metal carriers to a melt-down gasifying zone |
| 07/10/2001 | US6257879 Paired straight hearth (PSH) furnaces for metal oxide reduction |
| 07/05/2001 | WO2001048254A1 Method for the utilisation of plastic waste in the thermal treatment of metalliferous recyclings |
| 07/05/2001 | WO2001048251A1 Method for producing pig iron |
| 07/05/2001 | WO2001048250A1 Method for utilizing activated carbon powder recovered from exhaust sintering gas treating apparatus |
| 07/05/2001 | WO2000050969A8 Mass generation of individual virtual servers, virtual web sites and virtual web objects |
| 07/05/2001 | US20010006012 Continuous metal melting apparatus |
| 07/05/2001 | DE19949330A1 Verfahren und Einrichtung zur Einhüllung eines Lichtbogens Method and apparatus for wrapping an arc |
| 07/05/2001 | CA2396690A1 Method for producing pig iron |
| 07/04/2001 | EP1112387A1 Direct smelting vessel and direct smelting process |
| 07/04/2001 | EP0985122B1 Charging device for a rotary hearth furnace |
| 07/04/2001 | EP0910671B1 Process and device for charging a fusion gasifier with gasifying means and spongy iron |
| 07/04/2001 | CN1068057C Process and apparatus for producing a reduction gas for reduction of metal ore |
| 07/04/2001 | CN1068056C Process and device for production of spongy metal |
| 07/04/2001 | CN1068055C Process and device for production of liquid pig iron or liquid intermediate products of liquid steel and spougy iron |
| 07/04/2001 | CN1068054C Plant and process for production of snongy metal |
| 07/04/2001 | CN1068053C 3-stage fluidized bed type fine iron ore reducing apparatus having x-shaped circulating tubes |
| 07/04/2001 | CN1068052C Molten reduction apparatus and method for operating same |
| 07/03/2001 | US6254665 By reduction of iron oxide agglomerates incorporated with carbonaceous material in a moving hearth reducing furnace. |
| 06/28/2001 | WO2001046479A1 Method and device for feeding a gas to a metallurgical vessel |
| 06/28/2001 | WO2001046478A2 A fluidized bed reactor for preventing the fine iron ore from sticking therein and method therefor |
| 06/28/2001 | CA2362802A1 A fluidized bed reactor for preventing the fine iron ore from sticking therein and method therefor |
| 06/27/2001 | EP1109943A1 Induction furnace for a metal reduction and melting process |
| 06/27/2001 | EP1109940A1 2-stage fluidized bed type fine iron ore reducing apparatus, and reducing method using the apparatus |
| 06/27/2001 | CN1301312A Continuous metal melting process and apparatus |
| 06/26/2001 | US6251162 Process for the production of liquid pig iron or liquid intermediate products of steel |
| 06/26/2001 | US6251161 Method for operating moving hearth reducing furnace |
| 06/26/2001 | US6251156 Method of producing molten iron in duplex furnaces |
| 06/21/2001 | WO2001044522A1 Method and installation for reducing ore fines in a multi-stage suspension gas stream using a cyclone separator |
| 06/21/2001 | WO2001044518A1 Method for decreasing elutriation loss of fine iron ore in fluidized bed type reducing operation |
| 06/21/2001 | US20010003930 Iron oxide is reduced to metallized iron by contact with hot reducing gas, comprising a first hot reducing gas containing carbon monooxide and hydrogen, a gaseous or liquid hydrocarbon fuel with oxygen as addtional reducing agent |
| 06/21/2001 | DE19960575A1 Verfahren und Anlage zur Reduktion von Feinerzen Method and apparatus for reduction of ore fines |
| 06/21/2001 | CA2394279A1 Method and installation for reducing ore fines in a multi-stage suspension gas stream using a cyclone separator |
| 06/20/2001 | EP1108071A1 Method for producing a metal melt and corresponding multfunction lance |
| 06/20/2001 | EP1108070A1 Method for the thermal processing of residues containing heavy metals and iron oxide |
| 06/20/2001 | CN1299879A Direct-fusing apparatus and method |
| 06/20/2001 | CN1067436C Technology for directly reducing iron with coal base in pot furnace |
| 06/19/2001 | US6248152 Method of reducing iron oxide on a movable hearth furnace |
| 06/14/2001 | WO2001042516A1 Facilities for reducing metal oxide, method for operating the facilities and moldings as law material to be charged to reduction furnace |
| 06/14/2001 | WO2001042515A1 A device for preventing back mixture in a fluidized bed reactor |
| 06/14/2001 | CA2367349A1 A device for preventing back mixture in a fluidized bed reactor |
| 06/13/2001 | EP1105542A1 Shaft furnace |
| 06/13/2001 | EP1105541A1 Method for producing liquid pig iron |
| 06/13/2001 | EP0910672B1 Process for charging of metal carrying materials in a melt gasifier |
| 06/13/2001 | CN1067112C Method for veduction and melting of compounds contg. metallic elements |
| 06/13/2001 | CN1067109C Process and equipmetn for feeding gasifier and spongy iron into melting gasifying furnace |