| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 03/13/2003 | US20030047851 Reacting method |
| 03/13/2003 | US20030047038 Raw material compring metal oxide and/or the metal hydroxide such as iron ore mixed with carbonaceous material is in a prereduction furnace; melting and reducing the mixture of raw materials using combustion heat of the carbonaceous material |
| 03/13/2003 | US20030047037 Process for removal of carbon dioxide for use in producing direct reduced iron |
| 03/12/2003 | EP1291318A1 Method and apparatus for supplying hydrogen and portable cassette for supplying hydrogen |
| 03/06/2003 | WO2003018849A1 Hearth for moving floor furnace |
| 03/06/2003 | US20030041691 Method and apparatus for controlling temperature uniformity of the burden in a direct reduction shaft furnace |
| 03/06/2003 | US20030041690 By reducing under pressure a metal-oxide-containing material in a fluidized-bed reactor and subsequently melting down the reduced material in a melt-down gasifier which generates a reducing gas from coal; sponge iron |
| 03/05/2003 | EP1287168A1 Iron ore reduction method and installation therefor |
| 03/04/2003 | WO2002027041A2 Method and device for distributing a lumpy bulk material |
| 02/26/2003 | EP1285096A1 Method and device for producing pig iron or liquid steel pre-products from charge materials containing iron ore |
| 02/26/2003 | CN1399688A Method and facilities for metal smelting |
| 02/25/2003 | US6524362 Method of melting fine grained direct reduced iron in an electric arc furnace |
| 02/25/2003 | US6524356 Combusting a first supply of a liquid/gaseous hydrocarbon, with oxygen in first stage to provide flame gases, passing it into second stage, injecting a second supply of hydrocarbon, reacting with flame gas to form carbon monoxide and hydrogen |
| 02/25/2003 | US6523348 Work recovery from process involving steam generation |
| 02/20/2003 | US20030033905 Forming uniform, nonagglomerating, flowable body for three dimensional printing |
| 02/19/2003 | CN1397651A Technology and apparatus for producing spongy iron containing cold-setting carbon spheres |
| 02/18/2003 | CA2101303C Production of high titania slag from ilmenite |
| 02/11/2003 | US6517605 Start-up procedure for direct smelting process |
| 02/11/2003 | CA2266301C Method of producing reduced iron agglomerates |
| 02/06/2003 | WO2003010343A1 Method for smoothing lump material in metal iron production |
| 02/06/2003 | WO2003010342A1 Method for accelerating separation of granular metallic iron from slag |
| 02/06/2003 | US20030024352 Method for producing pig iron |
| 02/06/2003 | CA2448383A1 Method for accelerating separation of granular metallic iron and slag |
| 02/05/2003 | EP0843740B1 Reducing iron oxides in rotary hearth furnace |
| 01/30/2003 | WO2003008652A1 Method of manufacturing metal iron |
| 01/30/2003 | WO2002090604A3 Method and installation for utilizing waste products, which contain hydrocarbons and iron oxide, particularly mill scale sludges and coal fines |
| 01/30/2003 | US20030019548 Method for manufacturing reduced iron briquettes |
| 01/30/2003 | US20030019329 Method for making molten metal |
| 01/28/2003 | WO2003006693A1 A gas injection lance |
| 01/28/2003 | US6511629 Shaft furnace |
| 01/28/2003 | US6511316 Method of operating a rotary hearth furnace |
| 01/23/2003 | US20030015315 Method for operating manufacturing equipment including heating furnace |
| 01/23/2003 | US20030015064 Moving-hearth heating furnace and method for making reduced metal agglomerates |
| 01/22/2003 | EP1277844A1 Moving-hearth heating furnace and method for making reduced metal agglomerates |
| 01/22/2003 | EP1276913A1 Method and installation for producing a metal melt |
| 01/22/2003 | EP1276912A1 A direct smelting process and apparatus |
| 01/22/2003 | CN2532082Y Material shelf for reduction furnace |
| 01/22/2003 | CN1392272A Process for producing steel and iron and its special equipment |
| 01/22/2003 | CN1099573C Electric arc fusion furnace |
| 01/21/2003 | US6508856 Furnace discharge system and method of operation |
| 01/17/2003 | CA2392407A1 Moving-hearth heating furnace and method for making reduced metal agglomerates |
| 01/16/2003 | US20030011114 Gas injection lance |
| 01/15/2003 | EP1275739A2 Process and apparatus for metal production, especially steel, from fine grained metal oxides |
| 01/15/2003 | CN1390957A Direct reduction process for rotary kiln |
| 01/14/2003 | US6506353 Process and apparatus for producing iron carbide |
| 01/14/2003 | US6506231 Forming iron by reduction |
| 01/14/2003 | US6506230 Method for increasing productivity of direct reduction process |
| 01/14/2003 | CA2188338C Refractory lining system for high wear area of high temperature reaction vessel |
| 01/09/2003 | WO2003002775A2 Method and plant for treating flue gas dust of electric steelmaking furnaces and steel mills using pelletization |
| 01/09/2003 | WO2002036834A8 Method and apparatus for utilising recyclings containing iron and heavy metals while involving the use of a melting cyclone, a separating vessel, and a vessel for carrying out metallurgical treatment |
| 01/08/2003 | EP1144696A4 Method of producing molten iron in duplex furnaces |
| 01/08/2003 | CN1389574A Production process of directly reduced iron with carbon-containing iron ore pellet |
| 01/07/2003 | US6503289 Process for manufacturing molten metal iron |
| 01/02/2003 | EP1269796A1 Process and apparatus for automatically controlling slag foaming |
| 01/01/2003 | CN1388790A Method and apparatus for supplying hydrogen and portable cassette for supplying hydrogen |
| 12/31/2002 | US6500381 Method and apparatus for supplying granular raw material for reduced iron |
| 12/27/2002 | WO2002103063A2 Method and device for treating particulate material |
| 12/27/2002 | CA2450688A1 Method and device for treating particulate material |
| 12/27/2002 | CA2448381A1 Method for manufacturing metal nuggets |
| 12/26/2002 | US20020194961 Reducing a metal oxide to a reduced metal by heating, and supplying and burning a fuel including combustible wastes as a heat source for the operation; cost efficiency |
| 12/26/2002 | US20020194959 Heat treatment method for treating mobile waste |
| 12/19/2002 | WO2002000945A1 Method and installation for the indirect reduction of particulate oxide-containing ores |
| 12/19/2002 | US20020189403 Method of producing reduced metals and apparatus for reducing metal oxides |
| 12/18/2002 | EP1266971A2 Operation method of moving hearth furnace |
| 12/18/2002 | EP1109943B1 Induction furnace for a metal reduction and melting process |
| 12/18/2002 | CN2526327Y Blast pipe of rotary kiln for coal base direct reduction iron |
| 12/17/2002 | US6494933 Method of utilizing secondary raw materials containing iron, zinc and lead |
| 12/11/2002 | EP1264901A2 Method of producing reduced metals and apparatus for reducing metal oxides |
| 12/11/2002 | EP1264643A1 Heat treatment method for treating waste |
| 12/11/2002 | EP0946757B1 Method for blowing fine particles containing metal oxide into a reducing gas |
| 12/11/2002 | CA2390151A1 Operation method of moving hearth furnace |
| 12/10/2002 | US6491864 Plant for charging metal carriers to melt-down gasifying zone |
| 12/10/2002 | US6491738 2-stage fluidized bed type fine iron ore reducing apparatus, and reducing method using the apparatus |
| 12/05/2002 | WO2002097138A1 Method and apparatus for increasing productivity of direct reduction process |
| 12/05/2002 | US20020178864 Coating with tar emulsion; oxidation resistance |
| 12/04/2002 | EP1021570B1 Method of making iron and steel |
| 12/04/2002 | EP0888462B1 Method for making reduced compacts comprising iron and such compacts |
| 12/04/2002 | EP0819182B1 A method of producing metals and metal alloys |
| 12/04/2002 | CN1383453A Method of producing metallic iron and raw material feed device |
| 12/03/2002 | US6490312 Direct-current arc furnace comprising a centric charging shaft for producing steel and a method therefor |
| 12/03/2002 | US6488738 Method of producing molten metal |
| 12/03/2002 | US6488737 Method for reducing metallic oxides |
| 12/03/2002 | CA2217353C A method of producing metals and metal alloys |
| 11/28/2002 | US20020175441 Adding water to a raw material mixture comprising iron oxide and blast furnace dust for reduction in open-hearth furnace |
| 11/28/2002 | US20020174745 Rotary hearth-type for dehydration to molding |
| 11/27/2002 | EP1260599A2 Rotary drum furnace for the pyrometallurgical treatment of waste in fluidised bed |
| 11/27/2002 | EP0792938B1 Scrap melting method |
| 11/27/2002 | CN1382223A Method for operating melt-down gasifier |
| 11/27/2002 | CN1094980C Method for controlling smelting reduction process |
| 11/21/2002 | WO2002092860A1 Granular metallic iron |
| 11/20/2002 | EP0950117B1 A method for producing metals and metal alloys |
| 11/19/2002 | US6482351 Apparatus for producing reduced iron |
| 11/19/2002 | US6482249 Direct smelting process |
| 11/19/2002 | CA2259861C Process for producing a reduction gas for reduction of metal ore |
| 11/14/2002 | WO2002090726A2 Work recovery from process involving steam generation |
| 11/14/2002 | WO2002090604A2 Method and installation for utilizing waste products, which contain hydrocarbons and iron oxide, particularly mill scale sludges and coal fines |
| 11/14/2002 | US20020166412 Smelting reduction apparatus which separates exhaust gas, which is exhausted from a melter-gasifier or a fluidized bed reactor, into dusts and reducing gas to supply them to each fluidized bed reactor; for manufacturing molten pig iron |
| 11/14/2002 | CA2446057A1 Work recovery from process involving steam generation |
| 11/13/2002 | EP0840807B1 Direct iron and steelmaking |
| 11/13/2002 | EP0827554B1 Stable operation of a smelter reactor |