| Patents for C21B 11 - Making pig-iron other than in blast furnaces (2,381) |
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| 07/14/1998 | CA2124538C Process for producing liquid pig iron from lump iron ore |
| 07/09/1998 | WO1998029573A1 Production method of metallic iron |
| 07/09/1998 | WO1998029572A1 Electric furnace with insulated electrodes and process for producing molten metals |
| 07/09/1998 | CA2276151A1 Electric furnace with insulated electrodes and process for producing molten metals |
| 07/07/1998 | US5776226 Oxidation in a meltdown oxidizing reactor and two stage reduction |
| 07/02/1998 | WO1998028448A1 Smelting-reduction apparatus, and method for producing molten pig iron using the smelting reduction apparatus |
| 07/02/1998 | WO1998028447A1 Apparatus for keeping optimal penetration depth formed at front end of oxygen tuyere and method for keeping the same |
| 07/02/1998 | CA2247021A1 Apparatus for keeping optimal penetration depth formed at front end of oxygen tuyere and method for keeping the same |
| 07/01/1998 | CN1186522A Process for recovering metals from iron oxide bearing masses |
| 07/01/1998 | CN1186521A Production of foundry iron |
| 06/17/1998 | EP0848068A2 Plant and process for producing raw iron and/or sponge iron |
| 06/09/1998 | US5762681 Multicompartment of furnaces and cyclones |
| 06/03/1998 | EP0845541A2 Plant and process for producing raw iron and/or sponge iron |
| 06/02/1998 | US5759232 Method of charging materials into cupola |
| 05/28/1998 | WO1998022626A1 Reduced iron manufacturing method and apparatus |
| 05/27/1998 | EP0670910B1 Process and device for producing pig iron from iron ore or for thermally and/or chemically treating an easily decomposable material |
| 05/22/1998 | WO1998021371A1 Process for producing liquid pig iron or semifinished steel products from iron-containing materials |
| 05/22/1998 | CA2242392A1 Process for producing liquid pig iron or semifinished steel products from iron-containing materials |
| 05/20/1998 | EP0842301A1 Method for making pozzolans, synthetic blast-furnace slag, belite or alite clinkers, and pig-iron alloys, from oxidic slag, and a device for implementig this method |
| 05/13/1998 | EP0840806A1 Process for producing liquid pig iron or intermediate steel products and installation for implementing it |
| 05/06/1998 | CN1181112A Method of producing metals and metal alloys |
| 05/05/1998 | US5746804 Oxygen and air in tubes, feeding particles, flanges and nozzles |
| 05/05/1998 | CA2100270C Reduction of metal oxides |
| 04/15/1998 | EP0617739B1 Method for continuously melting down scrap metal |
| 04/08/1998 | CN1178560A Method for operating shaft furance |
| 04/08/1998 | CN1178559A Melt reduction equipment and operating method |
| 04/08/1998 | CN1178246A Gas circulative reduction smelting process for carbon containing pellets |
| 03/18/1998 | EP0829550A1 Method of processing incineration residues in a multi-stage metal bath converter |
| 03/18/1998 | CN1176666A Device of three-stage fluidized bed furnace type for reducing fine iron ore |
| 03/18/1998 | CN1176665A Method for injecting fine iron ore in smelting reducing process |
| 03/18/1998 | CN1176310A Method and apparatus for producing pig iron by smelting reduction and method of obtaining such plant |
| 03/17/1998 | US5728193 Process for recovering metals from iron oxide bearing masses |
| 03/17/1998 | CA2215262A1 Process for working up combustion residues |
| 03/04/1998 | EP0826130A1 Process for melting of metal materials in a shaft furnace |
| 02/25/1998 | CN1174240A Process for direct reduction of iron oxide-containing materials with solid carbonaceous reducing agents |
| 02/25/1998 | CN1174239A Multistage moving fluid bed and dropping bed molten state reduction iron-smelting method |
| 02/25/1998 | CN1037528C Converter process for production of iron |
| 02/11/1998 | EP0823487A1 Melt reduction equipment and operating method |
| 02/05/1998 | WO1998004749A1 Metal reduction and melting process |
| 01/28/1998 | CN1037196C Iron-containing oxide briquet for cupola and making process thereof |
| 01/21/1998 | EP0819182A1 A method of producing metals and metal alloys |
| 01/15/1998 | WO1998001585A1 Process for producing liquid metal and facilities for carrying out the process |
| 01/14/1998 | EP0818543A1 Method for operating shaft furnace |
| 01/14/1998 | EP0817868A1 Method for injecting fine iron ore in smelting reducing process |
| 01/07/1998 | EP0815272A1 Method of producing pig iron, alloys of ferrous metal and/or nonferrous metal with synthetic blast furnace slag from residues of incinerated waste and steelworks slag |
| 12/31/1997 | CN1169135A Method of utilizing dusts produced during the reduction of iron ore |
| 12/31/1997 | CN1168925A Method and equipment for jet reduction for making pig iron |
| 12/24/1997 | WO1997048824A1 Method of producing hot metal |
| 12/24/1997 | CA2234562A1 Method of producing hot metal |
| 12/23/1997 | CA2052126C Molten metal producing and refining method |
| 12/17/1997 | EP0812364A1 Device of three-stage fluidized bed furnace type for reducing fine iron ore |
| 12/16/1997 | US5698010 Scrap melting method |
| 12/16/1997 | US5698009 Method for agglomerating pre-reduced hot iron ore particles to produce ingot iron |
| 12/11/1997 | WO1997046717A1 Method for making pozzolans, synthetic blast-furnace slag, belite or alite clinkers, and pig-iron alloys, from oxidic slag, and a device for implementing this method |
| 12/10/1997 | EP0811080A1 2-stage fluidized bed furnace for pre-reducing fine iron ore and method for pre-reducing fine iron ore using the furnace |
| 12/10/1997 | CN1167156A Process for producing molten pig iron or molten steel preproducts |
| 12/09/1997 | US5695543 Method for metal reduction of steel waste products |
| 12/04/1997 | WO1997045561A1 Method of agglomerating oil-containing steel mill waste |
| 12/04/1997 | CA2255956A1 Method of agglomerating oil-containing steel mill waste |
| 12/03/1997 | EP0809713A1 Process for producing liquid raw iron or liquid steel base products and sponge iron and plant for implementing it |
| 12/03/1997 | CN1166861A Method of producing molten crude iron or molten crude steel, and plant for carrying out the method |
| 11/26/1997 | CN1166184A Scrap melting method |
| 11/12/1997 | EP0805786A1 Method of utilizing dusts produced during the reduction of iron ore |
| 10/30/1997 | WO1997040197A1 Metal containing compound reduction and melting process |
| 10/28/1997 | US5681367 Preparing green pellets for reducing to sponge iron pellets, each comprising iron ore, carbon reductant, slag forming materials, reducing in heated reducing zone, feeding to smelting zone having lower temperature to reduce further |
| 10/16/1997 | WO1997038141A1 Smelting reduction apparatus and method of operating the same |
| 10/15/1997 | EP0801136A1 Process for reducing oxidic slags or refuse incinerator ashes on a bath of molten iron alloy |
| 10/14/1997 | CA2019050C Method and apparatus for steel making |
| 10/08/1997 | CN1036075C Fusion reducing iron smelting method and its equipment |
| 10/01/1997 | CN1161063A Process for producing liquid raw iron or liquid steel base products and sponge iron and plant for implementing it |
| 10/01/1997 | CN1161062A Process for producing raw iron or and iron sponge and its equipment |
| 10/01/1997 | CN1161061A Process for producing liquid raw iron or steel basic products and iron sponge and plant for implementing it |
| 09/24/1997 | EP0796918A1 Method of charging scrap and coke materials into cupola |
| 09/24/1997 | EP0796350A1 Method of producing molten crude iron or molten crude steel, and plant for carrying out the method |
| 09/23/1997 | US5669955 Reduction |
| 09/12/1997 | WO1997033134A1 Process for melting of metal materials in a shaft furnace |
| 09/12/1997 | CA2217995A1 Process for smelting metallic raw materials in a shaft furnace |
| 09/03/1997 | EP0792939A1 Method of melting tinned iron scrap |
| 09/03/1997 | EP0792938A1 Scrap melting method |
| 09/02/1997 | US5662860 Apparatus for producing molten pig iron by direct reduction |
| 08/27/1997 | CN1158146A Process for producing liquid pig iron or semi-finished steel products and installation for implementing it |
| 08/27/1997 | CN1158145A Process for producing liquid pig iron or semi-finished sheet products and installation for implementing it |
| 08/20/1997 | EP0790319A2 Process for the reduction of iron ores with reducing agents containing solid carbon |
| 08/20/1997 | EP0680592B1 Process and device for melting iron metallurgy materials in a coke-fired cupola |
| 08/06/1997 | EP0787215A1 Process for producing liquid ray iron or steel basic products and iron sponge and plant for implementing it |
| 08/06/1997 | EP0787214A1 Plant and process for producing raw iron and/or sponge iron |
| 08/06/1997 | EP0787213A1 Process for producing liquid raw iron or semi-finished steel products and installation for implementing it |
| 07/31/1997 | WO1997027337A1 Method for operating shaft furnace |
| 07/31/1997 | WO1997027336A1 Melt reduction equipment and operating method |
| 07/24/1997 | WO1997026381A1 Method of producing pig iron, alloys of ferrous metal and/or nonferrous metal with synthetic blast furnace slag from residues of incinerated waste and steelworks slag |
| 07/24/1997 | CA2214079A1 Method of producing pig iron, alloys of ferrous metal and/or nonferrous metal with synthetic blast furnace slag from residues of incinerated waste and steelworks slag |
| 07/16/1997 | EP0783591A1 Process for producing liquid pig iron or semi-finished steel products and installation for implementing it |
| 07/15/1997 | US5647888 Process for producing metals and metal alloys in a smelt reduction vessel |
| 07/10/1997 | WO1997024463A1 Device of three-stage fluidized bed furnace type for reducing fine iron ore |
| 07/10/1997 | WO1997024462A1 Method for injecting fine iron ore in smelting reducing process |
| 07/03/1997 | WO1997023655A1 2-stage fluidized bed furnace for pre-reducing fine iron ore and method for pre-reducing fine iron ore using the furnace |
| 07/02/1997 | EP0605535B1 Process for production of iron |
| 06/25/1997 | CN1152703A Vetical type quick melting furnace |
| 06/17/1997 | US5639293 Method and apparatus for production of iron from iron compounds |
| 06/12/1997 | WO1997020954A1 Simplified duplex processing of nickel ores and/or concentrates for the production of ferronickels, nickel irons and stainless steels |