| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 12/07/1996 | CA2176692A1 Direct use of sulfur bearing nickel concentrate in making ni alloyed stainless steel |
| 12/07/1996 | CA2175750A1 Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame |
| 12/05/1996 | WO1996038379A1 Process and equipment for producing iron carbide |
| 12/03/1996 | US5579705 Plasma furnace and a method of operating the same |
| 11/27/1996 | CN1033396C Double-vessel iron ore direct reducing technology and system |
| 11/26/1996 | US5577346 Introducing carbonaceous material, oxidizing dissolved carbon |
| 11/26/1996 | CA1338731C Method of smelting reduction of chromium raw materials and a smelting reduction furnace thereof |
| 11/20/1996 | EP0743368A1 A smelting reduction method with increased effectiveness |
| 11/19/1996 | US5575829 Direct use of sulfur-bearing nickel concentrate in making Ni alloyed stainless steel |
| 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 |
| 11/07/1996 | WO1996034989A1 Process for producing hydraulic binders and/or alloys, e.g. ferrochromium or ferrovanadium |
| 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 |
| 11/06/1996 | EP0740695A1 Utilizing discarded carbon |
| 11/06/1996 | CN1134983A Process for prodn. of spongy iron or metallized ball block |
| 11/05/1996 | US5571475 Reducing and smelting furnace having filter layer |
| 11/05/1996 | US5571306 Feedstock for steel making |
| 10/31/1996 | WO1996034120A1 Process and plant for recycling iron-containing residues from the steel and iron industry |
| 10/30/1996 | EP0449891B1 Manufacture of iron and steel in a duplex smelter and solid state oxide suspension prereducer |
| 10/23/1996 | EP0542825B1 Slag control apparatus and method |
| 10/23/1996 | CN1033097C Method for protecting refractory lining in gas space of metallurgical reaction vessel |
| 10/22/1996 | US5567379 Method of producing molten pig iron or molten steel pre-products and a plant therefor |
| 10/22/1996 | US5567225 Method of making pig iron with zinc recovery |
| 10/22/1996 | US5567224 Alloying |
| 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 |
| 10/02/1996 | EP0735146A1 Apparatus for producing molten pig iron by direct reduction |
| 10/01/1996 | US5560762 Process for the heat treatment of fine-grained iron ore and for the conversion of the heat treated iron ore to metallic iron |
| 09/26/1996 | WO1996029435A1 Process for reducing ore fines and arrangement for carrying out the process |
| 09/26/1996 | CA2215678A1 Process for reducing ore fines and arrangement for carrying out the process |
| 09/24/1996 | US5558696 Method of direct steel making from liquid iron |
| 09/18/1996 | EP0558489B1 Fluidized bed reactor and process for using same |
| 09/18/1996 | CN1131195A Process and equipment for producing spongy iron |
| 09/10/1996 | US5555259 Process and device for melting down of scrap |
| 09/10/1996 | US5554207 Process of recycling iron oxides and plastics in steelmaking |
| 09/10/1996 | US5554206 Method of charging ore |
| 09/03/1996 | CA1338567C Method of recycling steel belted tires |
| 08/29/1996 | DE19541673A1 Prodn. of solid reductants/energy carriers for blast furnaces |
| 08/21/1996 | CN1129462A Method for the disposal/recycling of gas cylinders containing filling material |
| 08/20/1996 | US5548611 Method for the melting, combustion or incineration of materials and apparatus therefor |
| 08/20/1996 | CA2024466C Method of operating in-bath smelting reduction furnace |
| 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 |
| 08/06/1996 | US5542963 Direct iron and steelmaking |
| 08/01/1996 | WO1996023081A1 Method and device for cooling hot briquetted spongy iron |
| 07/30/1996 | CA2010357C Method for smelting reduction of ni ore |
| 07/25/1996 | WO1996022394A1 Method for co-producing fuel and iron |
| 07/25/1996 | CA2210707A1 Method for co-producing fuel and iron |
| 07/21/1996 | CA2167358A1 Method of producing iron carbide |
| 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 |
| 07/10/1996 | CN2230767Y Carbon-containing pellet reduction furnace with scrappers |
| 07/09/1996 | US5534046 Process for producing molten pig iron or molten steel pre-products |
| 07/02/1996 | US5531424 Fluidized bed direct reduction plant |
| 06/27/1996 | WO1996019591A1 Process and apparatus for the manufacture of steel from iron carbide |
| 06/26/1996 | CN1125255A Hot pressed carboniferous ore ball fast direct reducing or calcining process |
| 06/25/1996 | US5529599 Method for co-producing fuel and iron |
| 06/25/1996 | US5529291 Circulating fluidized bed direct reduction system |
| 06/18/1996 | US5527379 Two stage reduction, carburization using fluidized bed system |
| 06/12/1996 | EP0417296B1 Direct smelting process |
| 06/12/1996 | CN1124295A Improved molten metal decomposition apparatus and process |
| 06/06/1996 | WO1996017090A1 Method for producing iron feedstock |
| 06/06/1996 | WO1996017089A1 Sponge iron production process and plant |
| 06/06/1996 | CA2206583A1 Process for producing sponge iron and plant for carrying out the process |
| 06/06/1996 | CA2206555A1 Method for producing iron feedstock |
| 06/05/1996 | EP0714451A1 Method for the disposal/recycling of gas cylinders containing filling material |
| 06/05/1996 | CN1123840A Method and apparatus for production of iron from iron compounds |
| 05/29/1996 | CN1123330A Composite furnace device |
| 05/23/1996 | WO1996015208A1 Method for coking coal |
| 05/21/1996 | US5518523 Converter process for the production of iron |
| 05/14/1996 | CA2031473C Method for controlling a flow rate of gas for prereducing ore and apparatus therefor |
| 05/07/1996 | US5514203 Adding quicklime binder and coal dust to dehydrated sludge, granulation, charging to melting/gasification zone while increasing basicity of slag |
| 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 |
| 04/25/1996 | DE4437549A1 Thermal treatment of iron ore to convert it into metallic iron@ |
| 04/24/1996 | CN1121358A Method and apparatus for producing iron |
| 04/11/1996 | WO1996010657A1 Arrangement in a wall and a method of coating a wall |
| 04/04/1996 | WO1996010094A1 Process for reducing oxide-containing material and system for carrying out this process |
| 04/02/1996 | US5504448 Current limit sense circuit and method for controlling a transistor |
| 04/02/1996 | CA1338198C Method of desulfurizing molten metal in a plasma fired cupola |
| 03/21/1996 | WO1996008585A1 Method for recovering metal and chemical values |
| 03/19/1996 | US5500034 Method for preheating a reactor feed |
| 03/19/1996 | US5500032 Method for continuously melting down scrap metal |
| 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 |
| 03/07/1996 | WO1996006954A1 Method and apparatus for electric steelmaking |
| 03/06/1996 | CN1118173A Process for extracting metal from metal ores |
| 03/06/1996 | CN1118009A Method for production of sponge iron by using gas-making shaft furnace method of coal-base melting bed |
| 03/05/1996 | CA2046343C Fluidized bed type preliminary reducing furnace for oxide raw material |
| 03/05/1996 | CA2025015C Direct smelting process |
| 03/05/1996 | CA1338099C Method of smelting reduction of ores containing metal oxides |
| 02/29/1996 | WO1996006193A1 Converters and method of refining metal melts, in particular refining pig iron to steel |
| 02/22/1996 | WO1995035392A3 Method for reducing particulate iron ore to molten iron with hydrogen |
| 02/22/1996 | DE4429653A1 Konverter und Verfahren zum Frischen von Metallschmelzen insbesondere von Roheisen zu Stahl Converter and method for refining molten metal in particular of pig iron to steel |
| 02/21/1996 | CN1117083A Process for producing an iron melt |
| 02/14/1996 | EP0696327A1 An electrical method for conversion of molecular weights of particulates |