| Patents for C21B 11 - Making pig-iron other than in blast furnaces (2,381) |
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| 06/03/1997 | US5634960 Feeding mixture containing scrap metal, quartzite, carbonaceous material and wood chips, melting, positioning above electrodes so that solid charge surrounds electrodes, tapping furnace; molten iron suitable for foundry purposes |
| 05/27/1997 | US5632953 Gas recirculating circuit; melting; extracting furnace gas and feeding it back into an oxygen-free melting and overheating zone |
| 05/15/1997 | WO1997017473A1 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 05/14/1997 | CN2254084Y Stock retaining wall of scraper plate for chain-grate stoker |
| 05/14/1997 | CN1149631A Method for preparing ferro-phosphorus from corundum slag |
| 04/30/1997 | CN1034742C Process for reduction of iron |
| 04/23/1997 | CN1148409A A. Edlinger (CH) |
| 04/17/1997 | WO1997013880A1 Method of producing molten crude iron or molten crude steel, and plant for carrying out the method |
| 04/10/1997 | WO1997012997A1 Scrap melting method |
| 04/09/1997 | CN1147017A Smelting reduction method with increased effectiveness |
| 04/03/1997 | WO1997012065A1 Method of melting tinned iron scrap |
| 03/12/1997 | EP0762068A1 Process for operating an oxygen-consuming metallurgical shaft furnace and shaft furnace for performing said process |
| 03/05/1997 | CN1144275A Apparatus for producing molten pig iron by direct reduction |
| 02/27/1997 | WO1997007247A1 Process for producing liquid raw iron or liquid steel base products and sponge iron and plant for implementing it |
| 02/25/1997 | CA2069859C Plant comprising a shaft |
| 02/19/1997 | CN1143391A Fluidized bed type reduction apparatus for iron ore particles and method for reducing iron ore particles |
| 02/12/1997 | EP0757666A1 Metallurgical furnace vacuum slag removal |
| 02/11/1997 | CA2071366C Pretreatment of chromium bearing metal scrap to remove chromium |
| 02/06/1997 | WO1997004138A1 Process for producing liquid pig iron or intermediate steel products and installation for implementing it |
| 02/06/1997 | WO1997004137A1 Process for producing liquid raw iron or semi-finished steel products and installation for implementing it |
| 02/06/1997 | WO1997004136A1 Process for producing liquid pig iron or semi-finished steel products and installation for implementing it |
| 02/06/1997 | CA2227231A1 Process for producing liquid pig iron or intermediate steel products and installation for implementing it |
| 02/06/1997 | CA2200323A1 Process for producing liquid pig iron or semi-finished steel products and installation for implementing it |
| 02/06/1997 | CA2200322A1 Process for producing liquid raw iron or semi-finished steel products and installation for implementing it |
| 02/05/1997 | CN1142249A Apparatus for melting fine particles containing carbon and method thereof |
| 02/05/1997 | CN1142248A Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
| 01/29/1997 | EP0755736A1 Improvements in metallurgical conversion |
| 01/29/1997 | CN1141345A Process and apparatus for producing molten pig iron |
| 01/22/1997 | EP0754766A1 Method and apparatus for producing pig iron by smelting reduction and method of obtaining such a plant |
| 01/22/1997 | EP0754245A1 Method of manufacturing pig iron or steel and cement clinker from slags |
| 01/08/1997 | CN1139889A Improvments in metallurgical conversion |
| 12/31/1996 | US5590152 DC arc furnace |
| 12/31/1996 | US5588982 Process for producing foudry iron |
| 12/27/1996 | WO1996041895A1 Method for producing molten iron |
| 12/18/1996 | EP0748392A1 Apparatus for melting fine particles containing carbon and method for melting such fine particles using the apparatus |
| 12/18/1996 | EP0748391A1 Fluidized bed type reduction apparatus for iron ore particles and method for reducing iron ore particles using the apparatus |
| 12/17/1996 | US5584910 Preheating iron ore and fluxes including fines, reducing to sponge iron, melting in presence of carbon carriers and oxygen-containing gas to produce reducing gas, passing first portion to reducing zone, purifying second portion |
| 11/26/1996 | US5577346 Introducing carbonaceous material, oxidizing dissolved carbon |
| 11/20/1996 | EP0743368A1 A smelting reduction method with increased effectiveness |
| 11/19/1996 | CA2176798A1 A smelting reduction method with increased effectiveness |
| 11/13/1996 | EP0741801A1 Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
| 11/13/1996 | CN1033276C Coal-oxygen-ore-solvent compound jet iron-bathing gas-making and iron-smelting technology and jet gun thereof |
| 11/07/1996 | WO1996034988A1 Process for producing foundry iron |
| 11/07/1996 | WO1996034987A1 Process for recovering metals from iron oxide bearing masses |
| 11/07/1996 | CA2219415A1 Process for recovering metals from iron oxide bearing masses |
| 11/05/1996 | US5571475 Reducing and smelting furnace having filter layer |
| 10/30/1996 | EP0449891B1 Manufacture of iron and steel in a duplex smelter and solid state oxide suspension prereducer |
| 10/23/1996 | CN1033097C Method for protecting refractory lining in gas space of metallurgical reaction vessel |
| 10/17/1996 | WO1996032506A1 Ingot for conversion to steel by smelting, method and device for producing said ingot |
| 10/10/1996 | WO1996031627A1 A method of producing metals and metal alloys |
| 10/09/1996 | EP0596107B1 Fluidized bed preliminary reducing furnace for raw material comprising oxide |
| 10/09/1996 | CN1032975C Method for smelting iron alloy in ore roaster and carbonaceous reductant thereby |
| 10/02/1996 | EP0735146A1 Apparatus for producing molten pig iron by direct reduction |
| 10/02/1996 | DE19511274A1 Continuous blast furnace for fine, low carbon steels |
| 10/02/1996 | CN1132254A Iron-bath molten reduction method |
| 09/18/1996 | EP0732411A1 Vessel for a smelting plant |
| 09/04/1996 | CN2234445Y High-temp. gas outlet device |
| 09/03/1996 | CA1338567C Method of recycling steel belted tires |
| 08/20/1996 | CA2024466C Method of operating in-bath smelting reduction furnace |
| 08/15/1996 | WO1996024696A1 Method of manufacturing pig iron or steel and cement clinker from slags |
| 08/14/1996 | EP0726326A2 Method for producing molten pig iron |
| 08/13/1996 | US5545251 Using horizontal reactor with ore-reducing gas and heat vehicle gas in fluidized bed |
| 08/01/1996 | WO1996022950A1 Method of utilizing dusts produced during the reduction of iron ore |
| 07/16/1996 | US5535991 Plant for producing molten pig iron or molten steel pre-products |
| 07/11/1996 | WO1996021048A1 Apparatus for melting fine particles containing carbon and method for melting such fine particles using the apparatus |
| 07/11/1996 | WO1996021045A1 Fluidized bed type reduction apparatus for iron ore particles and method for reducing iron ore particles using the apparatus |
| 07/11/1996 | WO1996021044A1 Fluidized bed type reduction apparatus for iron ores and method for reducing iron ores using the apparatus |
| 07/11/1996 | DE19548143A1 Hot agglomeration of pre-reduced iron ore for ingot prodn. |
| 07/09/1996 | US5534046 Process for producing molten pig iron or molten steel pre-products |
| 07/02/1996 | US5531805 Mixing with sewage sludge carbon material; pelletization, chemical reduction, and carburization |
| 06/26/1996 | CN1125316A Full blast-cap thin-lining hog-mouthed intake cupola |
| 06/19/1996 | EP0548182B1 Metal-melting furnaces |
| 06/12/1996 | EP0417296B1 Direct smelting process |
| 06/12/1996 | CN1124295A Improved molten metal decomposition apparatus and process |
| 06/05/1996 | CN1123840A Method and apparatus for production of iron from iron compounds |
| 06/04/1996 | US5522916 Method and apparatus for injecting liquid oxygen |
| 05/29/1996 | CN1123330A Composite furnace device |
| 05/29/1996 | CN1123329A Method for smelting iron-powder by using cupola |
| 05/21/1996 | US5518523 Converter process for the production of iron |
| 05/08/1996 | EP0710726A1 Scrap melting method |
| 04/25/1996 | WO1996012045A1 Plant and process for producing raw iron and/or sponge iron |
| 04/25/1996 | WO1996012044A1 Process for producing liquid raw iron or steel basic products and iron sponge and plant for implementing it |
| 04/24/1996 | CN1121358A Method and apparatus for producing iron |
| 04/17/1996 | EP0707083A1 Process for treating waste or metal oxide containing incinerator refuse, and device for carrying out this process |
| 04/11/1996 | CA2159137A1 Method for working up refuse or metal-oxide-containing refuse incineration residues, as well as an arrangement for carrying out the method |
| 04/02/1996 | CA1338198C Method of desulfurizing molten metal in a plasma fired cupola |
| 03/26/1996 | US5501721 Fusion gasifier |
| 03/19/1996 | US5500032 Method for continuously melting down scrap metal |
| 03/14/1996 | WO1996007760A1 Smelting ferrous materials |
| 03/12/1996 | US5498277 Smelting iron source with reductant and oxygen gas, treatment with coal reductant to generate carbon monoxide and hydrogen with post combustion |
| 03/12/1996 | CA1338125C Process for the production of molten pig iron and plant for carrying out the process |
| 03/06/1996 | CN1031206C Integrate parallel-flow type continuous iron-smelting method and equipment thereof |
| 03/05/1996 | CA2046343C Fluidized bed type preliminary reducing furnace for oxide raw material |
| 03/05/1996 | CA2025015C Direct smelting process |
| 02/15/1996 | DE4422694A1 Nozzle system for melting ferrous materials in a coke-heated cupola furnace |
| 02/06/1996 | US5489325 Process for producing metals and metal alloys in a smelt reduction vessel |
| 01/23/1996 | US5486229 Raw material for producing ferrite dust for friction elements and method of reducing the same |
| 01/16/1996 | CA1337921C Method and apparatus for reduction of material containing metal oxide |
| 01/11/1996 | WO1996000798A1 Nozzle system for a device for melting iron metallic materials in a coke-heated cupola furnace |
| 01/03/1996 | EP0690136A1 Method and apparatus for production of iron from iron compounds |