| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 07/04/2000 | US6083296 Method of producing metals and metal alloys |
| 06/29/2000 | WO2000037687A1 Complex fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 06/29/2000 | CA2322130A1 Complex fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 06/28/2000 | EP1013778A1 Method and apparatus for producing metal from metal ores |
| 06/22/2000 | WO2000036161A2 Method for feeding fines in a light-arc furnace |
| 06/22/2000 | WO2000036160A1 Method and integrated plant for the production of steel by means of direct reduction or iron oxides |
| 06/22/2000 | WO2000036159A1 Method and apparatus for the direct reduction of mineral iron with optimized injection of reducing gas |
| 06/22/2000 | WO2000036158A1 Method and apparatus for the direct reduction of iron oxides |
| 06/22/2000 | WO2000036157A1 Device and method for the direct reduction of iron oxides |
| 06/22/2000 | WO2000036156A1 Method and apparatus for the direct reduction of iron oxides |
| 06/22/2000 | WO2000036155A1 Furnace for the direct reduction of iron oxides |
| 06/21/2000 | EP0914474B1 Metal reduction and melting process |
| 06/15/2000 | WO2000034531A1 Fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 06/15/2000 | CA2320242A1 Fluidized bed type fine iron ore reducing apparatus, and method therefor |
| 06/14/2000 | CN1053474C Process for direct reduction of iron oxide-containing materials with solid carbonaceous reducing agents |
| 06/14/2000 | CN1053473C Method and apparatus for producing metal and metal alloy |
| 06/13/2000 | US6074456 Molding to form a strip structure of sponge iron, smashing the strip structure, cooling the fragments, passing through a rotary drum to form fine-grained fines of the briquets and fragments |
| 06/13/2000 | CA2164388C Melt shop layout |
| 06/08/2000 | DE19950827A1 Liquid pig iron and/or crude steel production, e.g. from sponge iron, comprises compacting carbon fines to form a plasticized material for extrusion into a smelter-gasifier |
| 06/07/2000 | EP0748392B1 Method for melting fine particles containing carbon |
| 06/07/2000 | CN1053222C Smelting reduction method with increased effectiveness |
| 06/06/2000 | US6071468 Apparatus for producing iron carbide |
| 05/31/2000 | EP1004681A1 Pellets incorporated with carbonaceous material and method of producing reduced iron |
| 05/31/2000 | EP1004544A1 Operation management method of iron carbide production process |
| 05/31/2000 | EP1004543A1 Production method of iron carbide |
| 05/31/2000 | DE19853836A1 Direct reduction of oxide using modified furnace |
| 05/31/2000 | CN1053014C Process for preparing sponge iron |
| 05/30/2000 | CA2184009C Fluidized bed type reduction apparatus for iron ore particles and method for reducing iron ore particles using the apparatus |
| 05/25/2000 | WO2000029628A1 Iron production method of operation in a rotary hearth furnace and improved furnace apparatus |
| 05/24/2000 | EP0796350B1 Method of producing molten crude iron or molten crude steel, and plant for carrying out the method |
| 05/23/2000 | US6066685 Method for treating plastics and solid fuel obtained by the same method |
| 05/23/2000 | CA2184008C Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
| 05/23/2000 | CA2183784C Apparatus for melting fine particles containing carbon and method for melting such fine particles using the apparatus |
| 05/18/2000 | WO2000028098A1 Apparatus and process for treating a particulate material within a rotating retort |
| 05/18/2000 | WO2000028095A1 Method for producing directly reduced, desulfurized iron |
| 05/18/2000 | WO2000028094A1 Method for the heat treatment of residues containing heavy metals |
| 05/18/2000 | CA2345412A1 Method for the heat treatment of residues containing heavy metals |
| 05/18/2000 | CA2345411A1 Method for producing directly reduced, desulfurized iron |
| 05/17/2000 | EP1000178A1 Method for using coal fines in a melt-down gasifier |
| 05/16/2000 | US6063156 From a compact containing a carbonaceous reductant and an iron oxide is carried out extremely efficiently with a simple operation. |
| 05/16/2000 | US6063155 Fluidized bed process for the production of iron carbide |
| 05/11/2000 | WO2000026596A1 Method for forming a moving hearth in a furnace for producing reduced iron agglomerates |
| 05/11/2000 | WO2000026420A1 Method of producing molten iron in duplex furnaces |
| 05/10/2000 | EP0998586A1 Shaft furnace |
| 05/10/2000 | CN1252841A Process for producing liquid pig iron or liquid metallurgical preparations |
| 05/10/2000 | CN1252454A Method for using low temperature rectification combinea blast furnace and direct reduction reactor |
| 05/03/2000 | EP0997693A2 Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification |
| 05/03/2000 | EP0996749A1 Method for controlling a smelting reduction process |
| 05/03/2000 | EP0931167B1 Device for dosed introduction of fine particle material into a reactor vessel |
| 05/02/2000 | CA2169020C Method for producing molten pig iron |
| 05/02/2000 | CA2138718C Converter process for the production of iron |
| 04/26/2000 | CN1251618A Electric furnace with insulated electrode and process for producing molten metals |
| 04/25/2000 | US6053962 Scrap melting process |
| 04/25/2000 | US6053961 Smelting iron ores, reducing ores with char, oxidation and reducing |
| 04/20/2000 | WO2000022176A1 A process and an apparatus for producing metals and metal alloys |
| 04/20/2000 | WO2000022175A1 Direct reduced iron hot/cold discharge system |
| 04/19/2000 | CN1051580C Method of reducing metal oxide in rotary harth furnace heated by oxidizing flame |
| 04/18/2000 | US6051182 Separator for metallized iron fines |
| 04/18/2000 | US6051048 Solid, carbon-containing fuel is gasified and iron is melted in a gasifier-melter |
| 04/18/2000 | CA2135204C Plasma furnace and a method of operating the same |
| 04/13/2000 | WO2000020650A1 Direct-current arc furnace comprising a centric charging shaft for producing steel and a method therefor |
| 04/13/2000 | WO2000020648A1 Method and installation for producing iron, especially steel |
| 04/13/2000 | DE19846100A1 Gleichstromlichtbogenofen zur Herstellung von Stahl sowie Verfahren hierzu DC arc furnace for producing steel and method therefor |
| 04/13/2000 | CA2346770A1 Direct-current arc furnace comprising a centric charging shaft for producing steel and a method therefor |
| 04/13/2000 | CA2345470A1 Process and plant for the production of iron, in particular steel |
| 04/12/2000 | EP0992596A2 Operating process for a shaft furnace and shaft furnace |
| 04/12/2000 | EP0915992B1 A process for the direct production of cast iron from iron bearing ore, and an apparatus suitable to carry out said process |
| 04/12/2000 | EP0741801B1 Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
| 04/11/2000 | US6048382 Method for direct reduction and upgrading of fine-grained refractory and earthy iron ores and slags |
| 04/11/2000 | US6048381 Method and arrangement for cooling hot bulk material |
| 04/05/2000 | EP0990053A1 Process and plant for producing iron smelt in an electric arc furnace by using agglomerated, iron-containing steel work residues |
| 04/05/2000 | EP0990052A1 Method for producing iron carbide from granulated sponge iron |
| 04/05/2000 | CN1249785A Method and device for processing reducing gas for reducing ores |
| 04/05/2000 | CN1249350A Technology for directly reducing iron with coal base in pot furnace |
| 04/04/2000 | US6045602 Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification |
| 03/30/2000 | WO2000017404A1 Method for producing directly reduced metal in a multi-tiered furnace |
| 03/30/2000 | DE19853747C1 Combined process for direct reduction of fine ores involves extraction of non-fluidized ore from the first chamber of the horizontal fluidized bed trough, and full reduction of this ore in the counter-flow reactor |
| 03/30/2000 | CA2343212A1 Method for producing directly reduced metal in a multi-tiered furnace |
| 03/29/2000 | EP0989194A1 Method of producing reduced iron and production facilities therefor |
| 03/29/2000 | CN1249004A Production method of iron carbide |
| 03/29/2000 | CN1248959A Production method of iron carbide |
| 03/29/2000 | CN1248635A Technology of two-stage reduction method producing sponge iron |
| 03/29/2000 | CN1248633A Pre-reduction method and apparatus for fused reduction |
| 03/29/2000 | CN1248632A Coal oxygen fused reduction iron-smelting method and apparatus |
| 03/22/2000 | EP0963449A4 Electric furnace with insulated electrodes and process for producing molten metals |
| 03/22/2000 | CN1248297A Apparatus for manufacturing molten pig iron and reduced iron by utilizing fluidized bed, and method therefor |
| 03/22/2000 | CN1247901A Combined iron direct-reducing system |
| 03/22/2000 | CN1050634C Production of foundry iron |
| 03/22/2000 | CN1050633C Method and plant for producing pig iron by smelting reduction and method for obtaining such plant |
| 03/21/2000 | US6039916 Reduction of iron oxides with carbon by carburization |
| 03/16/2000 | WO2000014286A1 Method for heat-treating recyclings containing oil and iron oxide |
| 03/16/2000 | WO2000014285A1 A direct smelting process |
| 03/16/2000 | DE19938026A1 Production of pig iron and the preliminary products for steel comprises partially degreasing the fine coal and coal dust, and hot briquetting |
| 03/16/2000 | CA2339014A1 Method for heat-treating recyclings containing oil and iron oxide |
| 03/15/2000 | EP0985735A1 Integrated directly reduced iron production and power generation |
| 03/15/2000 | EP0985122A1 Charging device for a rotary hearth furnace |
| 03/15/2000 | CN1050387C Method for making Ni alloyed iron or nickel alloyed steel |
| 03/14/2000 | US6036744 Agglomeration and heating iron oxide and carbon reducing agent to form iron shells and slags inside shells while heating |
| 03/09/2000 | WO2000012946A1 Method for operating moving hearth reducing furnace |
| 03/09/2000 | WO2000012767A1 Method for producing a metal melt and corresponding multfunction lance |