| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 11/20/2001 | CA2061548C Direct reduction process in rotary hearth furnace |
| 11/15/2001 | WO2001034855A3 Method of pyroprocessing mineral ore material such as pellets in a rotary kiln for reducing combustion nox |
| 11/14/2001 | EP1153148A1 Method for producing liquid pig iron |
| 11/14/2001 | EP0897430B1 Method of producing liquid crude iron or liquid steel fabricated materials |
| 11/14/2001 | EP0842301B1 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 |
| 11/14/2001 | CN1074793C Method of making iron and steel |
| 11/13/2001 | US6315943 Apparatus for producing molten metal |
| 11/08/2001 | US20010037703 Heating to reduce iron oxide |
| 11/07/2001 | EP1017860B1 Refractory wall, metallurgical vessel comprising such a refractory wall and method in which such a refractory wall is applied |
| 11/07/2001 | CN1320707A Directly smelting apparatus |
| 11/07/2001 | CN1074461C Method and device for reducing metal ore |
| 11/06/2001 | US6312501 Method of producing reduced iron and production facilities therefor |
| 11/01/2001 | WO2001081637A1 A direct smelting process and apparatus |
| 11/01/2001 | US20010036436 Reducing, carburing raw material |
| 10/31/2001 | CN1074047C Method for using coal fines in a melt-down gasifier |
| 10/30/2001 | CA2219763C Process for producing foundry iron |
| 10/25/2001 | US20010033046 Apparatus for injecting gas into a vessel |
| 10/25/2001 | US20010033045 Method of charging metal carriers to a melt-down gasifying zone |
| 10/25/2001 | US20010032527 Method of producing reduced iron and production facilities therefor |
| 10/24/2001 | EP1147233A1 Method and apparatus for the direct reduction of iron oxides |
| 10/24/2001 | CN1319143A Method for producing directly reduced metal in multi-tiered furnace |
| 10/24/2001 | CN1073630C Coal oxygen fused reduction iron-smelting method and apparatus |
| 10/24/2001 | CN1073629C Electric fornace with insulated electrode and process for producing molten metals |
| 10/23/2001 | CA2232275C Method and apparatus for rapid reduction of iron oxide in a rotary hearth furnace |
| 10/18/2001 | WO2001077395A1 Method for producing reduced iron |
| 10/18/2001 | US20010030389 Apparatus for producing reduced iron |
| 10/17/2001 | EP1144696A1 Method of producing molten iron in duplex furnaces |
| 10/17/2001 | EP0975813B1 Process for producing liquid pig iron or liquid metallurgical preparations |
| 10/17/2001 | EP0966546B1 Method and device for processing reducing gas for reducing ores |
| 10/17/2001 | CN1317580A Process for preparing directly reduced iron |
| 10/17/2001 | CN1317579A Process for mfg. molten metal iron |
| 10/16/2001 | US6302938 Reduced pellets |
| 10/11/2001 | US20010027701 Feed device capable of forming a continuous layer of auxiliary raw material with an even thickness on the hearth to a desired thickness |
| 10/11/2001 | US20010027700 A reduction vessel with seals that are not operated with nitrogen |
| 10/10/2001 | EP1141421A1 Method and apparatus for the direct reduction of iron oxides |
| 10/10/2001 | EP0910674B1 Process for producing a reduction gas for reduction of metal ore |
| 10/10/2001 | CN1316524A Technology for coking with briquettes while producing spongy iron |
| 10/09/2001 | US6299826 Flow field in the inlet plenum of a fluidized bed |
| 10/09/2001 | CA2216993C Method and apparatus for producing iron carbide |
| 10/09/2001 | CA2211942C Method for injecting fine iron ore in smelting reducing process |
| 10/09/2001 | CA2211906C 2-stage fluidized bed furnace for pre-reducing fine iron ore and method for pre-reducing fine iron ore using the furnace |
| 10/04/2001 | WO2001073137A2 Method of producing metallic iron and raw material feed device |
| 10/04/2001 | WO2001073136A2 Process for manufacturing molten metal iron |
| 10/04/2001 | US20010025550 Compacting cabonaceous reducing agent and iron oxide; reduction in moving hearth furnace; agglomerating slag containing ferrous oxide; melting |
| 10/04/2001 | US20010025549 Charging iron oxide and carbon material into rotary hearth furnace; reducing into solid iron; carburizing; melting metal iron; separating slag; discharging molten iron |
| 10/04/2001 | EP1138789A1 Method of manufacturing reduced iron metal in molten state by use of rotary hearth furnace |
| 10/04/2001 | EP1137818A1 Method for the heat treatment of residues containing heavy metals |
| 10/04/2001 | EP1137817A1 Iron production method of operation in a rotary hearth furnace and improved furnace apparatus |
| 10/04/2001 | EP1137816A1 Method for producing directly reduced, desulfurized iron |
| 10/04/2001 | EP1137815A1 A process and an apparatus for producing metals and metal alloys |
| 10/04/2001 | EP1029088B1 Withdrawal device for a shaft furnace |
| 10/04/2001 | EP1015644B1 Method and apparatus for the direct reduction of a material containing iron oxide in a particulate form |
| 10/04/2001 | EP0946758B1 Method for making liquid metal |
| 10/04/2001 | EP0925375B1 Process for the production of spongy metal |
| 10/04/2001 | EP0922116B1 Melting gasifier for producing molten metals |
| 10/04/2001 | EP0910673B1 Process for producing a reduction gas for reduction of metal ore |
| 10/04/2001 | EP0904420B1 Metal containing compound reduction and melting process |
| 10/04/2001 | EP0882142B1 Process for producing liquid pig iron or semifinished steel products from iron-containing materials |
| 10/04/2001 | EP0852692B1 Method of melting oxidic slags and combustion residues, and device for carrying out this method |
| 10/04/2001 | EP0840806B1 Process for producing liquid pig iron or intermediate steel products and installation for implementing it |
| 10/04/2001 | CA2374703A1 Process for manufacturing molten metal iron |
| 10/03/2001 | CN1315649A Equipment for jetting granular material into container |
| 10/03/2001 | CN1315648A Device for blowing gas into metallurgical furnace |
| 10/03/2001 | CN1072263C Method and device for blowing fine particles containing metal oxide into reducing gas |
| 10/02/2001 | US6296479 Direct reduction method and rotary hearth furnace |
| 10/02/2001 | CA2213123C Device of three-stage fluidized bed furnace type for reducing fine iron ore |
| 10/02/2001 | CA2193854C Direct reduction process for iron oxide-containing materials |
| 10/02/2001 | CA2193853C Direct reduction process for iron oxide-containing materials |
| 09/27/2001 | WO2001072090A1 Process and apparatus for automatically controlling slag foaming |
| 09/27/2001 | DE19780163C1 Verfahren zum Herstellen von flüssigem Roheisen oder flüssigen Stahlvorprodukten sowie Anlage zur Durchführung des Verfahrens A method for producing liquid pig iron or liquid primary steel products, and plant for carrying out the method |
| 09/26/2001 | CN1314955A Process and apparatus for producing metals and metal alloys |
| 09/26/2001 | CN1314954A Direct smelting process |
| 09/26/2001 | CN1071796C Method and apparatus for producing iron and iron alloys from iron containing oxide |
| 09/26/2001 | CN1071795C Method for producing iron from solid iron carbide |
| 09/25/2001 | US6293992 Method and device for processing reducing gas for reducing ores |
| 09/25/2001 | US6293991 Directly reducing iron ore to sponge iron in a reduction zone; charging sponge iron into melt-down gasifying zone; melting sponge iron in melt-down gasifying zone under supply of carbon carriers and oxygen-containing gas; withdrawing reducing gas |
| 09/20/2001 | US20010022417 Direct smelting plant |
| 09/20/2001 | DE19538608C2 Verfahren zum Erschmelzen von Schrott Method for melting scrap |
| 09/19/2001 | EP0953057B1 Process for returning finely dispersed solids discharged with a carrier gas from a reactor vessel |
| 09/19/2001 | CN1313909A Direct smelting process and apparatus |
| 09/19/2001 | CN1071381C 竖炉 Shaft Furnace |
| 09/18/2001 | US6290696 Cryoplasty device and method |
| 09/18/2001 | CA2193855C Direct reduction process for iron oxide-containing materials |
| 09/13/2001 | US20010020758 Method of relining a vessel |
| 09/12/2001 | CN1312864A A direct smelting process |
| 09/12/2001 | CN1312863A Process for heat-treating residues containing heavy metals and iron oxides |
| 09/12/2001 | CN1312862A Method for heat-treating residues containing heavy metal and iron oxide |
| 09/12/2001 | CN1312861A Shaft furnace |
| 09/12/2001 | CN1312860A Method for producing liquid pig iron |
| 09/12/2001 | CN1070926C Apparatus for manufacturing molten pig iron and reduced iron by utilizing fluidized bed, and method thereof |
| 09/12/2001 | CN1070925C Device and method for dosed introduction of fine particle material into reactor vessel and apparatus for producing metal flux |
| 09/12/2001 | CN1070924C Apparatus and process for returning finely dispersed solids discharged with carrier gas from reactor vessel |
| 09/12/2001 | CN1070923C Production method of metallic iron |
| 09/11/2001 | US6289034 Process and an apparatus for producing metals and metal alloys |
| 09/07/2001 | WO2001065192A1 Multistage furnace with gas evacuation |
| 09/07/2001 | WO2001064960A1 Direct smelting process and apparatus |
| 09/05/2001 | CN1070535C Quick reduction process for cold solidified spheriods of iron ore concentrate in rotary kiln |
| 09/04/2001 | US6284018 Method of making iron and steel |
| 09/04/2001 | US6284017 Method and facility for producing reduced iron |
| 08/29/2001 | EP1127171A1 Direct iron and steelmaking |