| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 04/12/2006 | CN1759192A Process for producing reduced matal and agglomerate with carbonaceous material incorporated therein |
| 04/12/2006 | CN1250747C Method for producing a metal melt and corresponding multifunction lance |
| 04/12/2006 | CN1250746C Method and its device for feeding raw materials to movable hearth furnace |
| 04/12/2006 | CA2523165A1 Supplying solid feed materials for a direct smelting process |
| 04/06/2006 | US20060071376 Apparatus for injecting solid particulate material into a vessel |
| 04/06/2006 | US20060071375 Continuous heat treatment furnace and heat treatment method |
| 04/06/2006 | US20060070495 Granular metallic iron |
| 04/05/2006 | EP1641945A2 Method and apparatus for improved use of primary energy sources in integrated steel plants |
| 04/05/2006 | CN1754966A Process for preparing reduced iron by microwave fluidized bed |
| 04/04/2006 | US7022120 Cryoplasty device and method |
| 03/30/2006 | US20060065071 reducing oxidic iron particles of the slag with the dissolved carbon of the reducing agent in iron melt to form metallic iron and CO, then oxidizing CO to CO2; forming environmentally compatible cement clinker substitute; low cost, avoid dust loss, lower CO2 emission |
| 03/29/2006 | EP0837034B1 Process and equipment for producing iron carbide |
| 03/29/2006 | CN1754003A An apparatus for manufacturing moltens irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same |
| 03/29/2006 | CN1752219A Method for extracting cast iron by scum from blast furnace smelting iron |
| 03/23/2006 | WO2005084111A3 Combined pre-treatment process for enabling feed material to be charged in direct reduction processes |
| 03/23/2006 | WO2005084110A3 Pre-treatment process for feed material for direct reduction process |
| 03/22/2006 | CN1246485C Metal oxide-containing green pellet for reducing furnace, method for production thereof, method for reduction thereof |
| 03/16/2006 | WO2005119380A3 Computer implemented control process for the production of molten pig iron |
| 03/15/2006 | EP1634968A1 Method and apparatus for producing reduced metal |
| 03/09/2006 | WO2005116275A3 A direct reduction apparatus and process |
| 03/09/2006 | CA2578576A1 Production of ferro-alloys |
| 03/08/2006 | CN1745183A An apparatus for manufacturing molten irons to dry and convey iron ores and additives and manufacturing method using the same |
| 03/08/2006 | CN1743475A Method for extracting aluminium and iron from high-iron bauxite trihydrate |
| 03/01/2006 | CN1742102A An improved smelting process for the production of iron |
| 03/01/2006 | CN1740346A Process of producing sponge ion reducing gas with mixed gas |
| 03/01/2006 | CN1243835C Shaft furnace |
| 02/23/2006 | US20060037436 smelting iron-containing source material, having iron present as oxide and/or a partially metalized state, in reactor containing molten bath having a slag phase, utilizing injection of fuel/reductant and oxygen-containing gas into slag to generate heating and reducing conditions |
| 02/22/2006 | EP1627084A1 Method for utilizing slag |
| 02/22/2006 | CN1738997A Seal structure of solid feeding screw, and method of manufacturing reduced metal using the seal structure |
| 02/22/2006 | CN1738918A Method and plant for the heat treatment of solids containing iron oxide |
| 02/22/2006 | CN1738915A Method for producing metallic iron |
| 02/22/2006 | CN1737166A Self reduction melting method for pellet furnace |
| 02/16/2006 | US20060035193 Material feeding apparatus for rotary hearth furnace |
| 02/15/2006 | EP1625238A1 Direct smelting plant |
| 02/15/2006 | EP1307596B1 Method for producing metallic iron |
| 02/15/2006 | CN1735702A Method for reducing chromium containing raw material |
| 02/15/2006 | CN1733944A Sponge iron production method |
| 02/15/2006 | CN1733943A Method and device for manufacturing reduced iron using microwave fluid bed |
| 02/15/2006 | CN1242075C Apparatus and method for recycling iron containing dust and sludge in puddling process using coal and fine iron ore |
| 02/15/2006 | CN1241828C Method and apparatus for supplying hydrogen and portable cassette for supplying hydrogen |
| 02/09/2006 | WO2006013455A1 Method and apparatus for producing clean reducing gases from coke oven gas |
| 02/09/2006 | US20060027953 Metal melting furnace |
| 02/09/2006 | US20060027043 Method and apparatus for producing clean reducing gases from coke oven gas |
| 02/08/2006 | EP1165845B1 Method and apparatus for removing undesirable metals from iron-containing materials |
| 02/08/2006 | CN1730673A Slag cleaning furnace top-blown immersion technology |
| 02/08/2006 | CN1240851C Direct smelting process |
| 02/08/2006 | CN1240850C A process and apparatus for producing metals and metal alloys |
| 02/07/2006 | US6994037 Rabble arm for a furnace |
| 02/07/2006 | US6993855 Method for drying compact containing metal oxide, method for reducing metal oxide, and rotary-hearth-type metal reducing furnace |
| 02/02/2006 | US20060021469 Process for producing molten iron |
| 02/02/2006 | CA2575098A1 Apparatus for injecting solid particulate material into a vessel |
| 02/01/2006 | EP1621641A2 Apparatus for injecting solid particulate material into a vessel |
| 02/01/2006 | CN1239716C A gas injection lance |
| 02/01/2006 | CN1239715C Method for producing melt iron in electric furnace |
| 01/25/2006 | EP1230403B1 A direct smelting process |
| 01/25/2006 | CN1724695A Method of manufacturing low carbon sponge iron using microwave vertical furnace |
| 01/25/2006 | CN1238529C Manufacturing technique for enriching -iron |
| 01/25/2006 | CN1238528C Iron making method and melting facility for deoxidizing in rotary hearth furnace and melting and separating in flame furnace |
| 01/24/2006 | US6989126 Supplying solid feed materials for a direct smelting process |
| 01/24/2006 | US6989042 Injecting feed materials of solids and carrier gas into a molten bath at a velocity of >/= 40 m/s |
| 01/24/2006 | US6989040 A mixture of magnesium scrap, a gas-producing lubricants and calcium oxide, for removing sulfur from molten iron, deagglomeration, uniformly dispersing the desulfurization agents |
| 01/18/2006 | EP1616968A1 Method for producing improved coal for use in metallurgy, and method for producing reduced metal and slag containing oxidized nonferrous metal |
| 01/17/2006 | US6986801 Heating and reducing a compact mixture of iron oxide powder and carbon powder, with the carbon in the mixture as the reducing agent; efficient reduction to increase productivity |
| 01/17/2006 | US6986800 Method and apparatus for improved use of primary energy sources in integrated steel plants |
| 01/11/2006 | CN1718755A Direct production method of reduced iron |
| 01/11/2006 | CN1718754A Kiln for producing reducing iron and its reducing method |
| 01/11/2006 | CN1718753A Sponge iron for furnace charge and its manufacturing method |
| 01/05/2006 | US20060000309 Supply recycling system and valuable-metal recovering system |
| 01/04/2006 | EP1611259A1 Direct smelting plant and process |
| 12/29/2005 | US20050284262 Metallurgical vessel |
| 12/28/2005 | CN1714266A Material feeding apparatus for rotary hearth furnace |
| 12/28/2005 | CN1714163A Process and apparatus for extracting zinc |
| 12/28/2005 | CN1233978C Method for changing furnace lining and method for conducting direct melting process |
| 12/28/2005 | CN1233850C Direct smelting vessel and direct smelting process |
| 12/28/2005 | CN1233545C Oxygen supply device |
| 12/21/2005 | EP1185714B1 Method for producing reduced iron |
| 12/21/2005 | CN1711337A Apparatus and process for the treatment of a material under pyrolytical conditions, and use thereof |
| 12/21/2005 | CN1232793C Arc melting furnace |
| 12/15/2005 | WO2005119380A2 Computer implemented control process for the production of molten pig iron |
| 12/14/2005 | EP1605067A1 Process for producing particulate iron metal |
| 12/14/2005 | EP1604373A1 Method and apparatus for controling temperature uniformity of the burden in a direct reduction shaft furnace |
| 12/14/2005 | CN1231603C Parallel straight-bottom furnace for reduction metallic oxide |
| 12/14/2005 | CN1231602C Method for producing and reducing metal from material containing metal and mobile hearth furnace |
| 12/14/2005 | CN1231601C Method for producing liquid pig iron |
| 12/13/2005 | CA2108816C Process for producing molten pig iron or molten steel pre-products |
| 12/08/2005 | WO2005116280A1 Direct reduction process using a single fluidised bed |
| 12/08/2005 | WO2005116275A2 A direct reduction apparatus and process |
| 12/08/2005 | WO2005116274A2 A direct reduction process |
| 12/08/2005 | WO2005116273A1 A direct reduction process and apparatus |
| 12/08/2005 | CA2566322A1 Direct reduction process using a single fluidised bed |
| 12/08/2005 | CA2566157A1 A direct reduction process and apparatus |
| 12/07/2005 | EP1602737A1 Process for producing reduced matal and agglomerate with carbonaceous material incorporated therein |
| 12/06/2005 | CA2402860C Process and apparatus for automatically controlling slag foaming |
| 11/30/2005 | EP1373580B1 Modular shaft furnace for reduction smelting |
| 11/30/2005 | CN1702417A A method of relining a vessel |
| 11/30/2005 | CN1229505C Method of producing metallic iron and raw material feed device |
| 11/23/2005 | EP1598434A1 Method for preparing a metallic article having an other additive constituent, without any melting |
| 11/23/2005 | CN1699000A Method for preparing a metallic article having an other additive constituent, without any melting |
| 11/22/2005 | CA2308078C Method for operating moving hearth reducing furnace |
| 11/17/2005 | WO2005108628A1 Support frame structure for supporting dispersion plate in fluid layer reduction furnace for reduction of iron ore |