| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 07/15/2003 | US6592646 Method of producing direct reduced iron with use of coal-derived gas and apparatus |
| 07/10/2003 | WO2003056040A1 Method of production of liquid carbonaceous iron based metal |
| 07/10/2003 | WO2003056039A1 An apparatus and method for recycling dust and sludge containing iron in ironmaking process using coal and fine ore |
| 07/09/2003 | EP1325950A2 Co-current shaft reactor |
| 07/09/2003 | EP1325160A1 Method and device for producing a static bed |
| 07/09/2003 | EP1325159A1 A direct smelting process and apparatus |
| 07/09/2003 | EP1325156A2 Method and device for distributing a lumpy bulk material |
| 07/09/2003 | CN1429278A A direct smelting process and apparatus |
| 07/08/2003 | US6589667 Spherical porous iron powder and method for producing the same |
| 07/02/2003 | EP1114195A4 A direct smelting process |
| 07/02/2003 | EP1114194A4 A direct smelting process and apparatus |
| 07/02/2003 | EP1114191A4 A direct smelting process |
| 07/02/2003 | EP1098997A4 A direct smelting process |
| 07/01/2003 | US6585929 Direct smelting vessel |
| 07/01/2003 | US6585800 Method for making molten metal |
| 07/01/2003 | US6585798 Fluidized bed reactor for preventing the fine iron ore from sticking therein and method thereof |
| 06/25/2003 | EP1320633A1 A direct smelting process and apparatus |
| 06/25/2003 | EP1214455B1 Device for the direct reduction of iron oxides |
| 06/25/2003 | EP1127171B1 Direct iron and steelmaking |
| 06/25/2003 | EP1117844B1 Method for producing iron, especially steel |
| 06/25/2003 | EP1114192A4 A process and an apparatus for producing metals and metal alloys |
| 06/25/2003 | EP1112387A4 Direct smelting vessel and direct smelting process |
| 06/25/2003 | EP1034311A4 Direct smelting process for producing metals from metal oxides |
| 06/25/2003 | EP0990052B1 Method for producing iron carbide from granulated sponge iron |
| 06/25/2003 | CN1426483A Method and installation for producing metal melt |
| 06/24/2003 | US6582651 Steps of combining the starting materials, forming the starting materials into a shape to produce a nonmetallic metal precuror article of a certain geometry, and converting the nonmetallic article to a metallic article by reduction or |
| 06/24/2003 | US6582492 Reduction-melting methods capable of replacing the blast furnace in the production of molten pig iron |
| 06/24/2003 | US6582491 Method for producing molten iron in duplex furnaces |
| 06/19/2003 | US20030110891 Iron ore reduction method and installation therefor |
| 06/19/2003 | US20030110889 Method for producing sponge iron, and reduced iron powder and method for production thereof |
| 06/17/2003 | US6579505 Method of producing iron oxide pellets |
| 06/17/2003 | CA2127277C Method for the recovery of zinc oxide |
| 06/10/2003 | US6575390 Pretreatment apparatus for raw materials for production of reduced iron |
| 06/05/2003 | US20030102610 Method and apparatus for supplying granular raw material for reduced iron |
| 06/04/2003 | EP1108071B1 Multifunction lance and use thereof |
| 06/04/2003 | EP0946756A4 Producing iron from solid iron carbide |
| 06/04/2003 | CN1422509A Process and apparatus for automatically controlling slag foaming |
| 05/29/2003 | US20030097908 Using a hot pre-reduced iron ore, charging to the moving hearth furnace, heating to melt, then reacted with the carbon and separating slag, forming carburized iron nuggets, cooling; metal working |
| 05/28/2003 | EP1036203A4 Method and apparatus for controlling dri carburization |
| 05/27/2003 | US6569377 Plant for the direct reduction of particulate iron-oxide-containing material |
| 05/27/2003 | US6569223 Method of manufacturing molten metal iron |
| 05/27/2003 | US6569220 Iron powder and method of producing such |
| 05/22/2003 | WO2003042415A1 Method for producing metallic iron |
| 05/21/2003 | EP1137817B1 Iron production method of operation in a rotary hearth furnace and improved furnace apparatus |
| 05/21/2003 | EP0970253B1 Process for direct production of cast iron from fine iron ore and fine coal and apparatus suitable to carry out said process |
| 05/20/2003 | US6565798 Method of relining a vessel |
| 05/20/2003 | CA2221808C Stable operation of a smelter reactor |
| 05/15/2003 | US20030089200 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 |
| 05/13/2003 | US6562103 Process for removal of carbon dioxide for use in producing direct reduced iron |
| 05/13/2003 | US6562102 Method for producing liquid pig iron |
| 05/13/2003 | CA2246392C Method for increasing the charring ratio of coal |
| 05/07/2003 | EP1307596A2 Method for producing metallic iron |
| 05/07/2003 | CN1107727C Tech of two-stage reduction method producing sponge iron |
| 05/06/2003 | US6558614 Method for producing a metal melt and corresponding multifunction lance |
| 05/06/2003 | CA2296234C Method for manufacturing reduced iron pellets |
| 05/02/2003 | EP1306452A2 Method for making metal oxide agglomerates |
| 05/01/2003 | WO2003036211A1 Rotary hearth furnace and screw thereof for discharging reduced iron |
| 05/01/2003 | CA2553147A1 Rotary hearth furnace and screw thereof for discharging reduced iron |
| 04/30/2003 | CA2427521A1 Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility |
| 04/24/2003 | US20030075842 Rotary hearth furnace and screw thereof for discharging reduced iron |
| 04/24/2003 | CA2405951A1 Method for making metal oxide agglomerates |
| 04/23/2003 | EP1304391A2 Method for producing a metal melt and corresponding multfunction lance |
| 04/23/2003 | CN1413266A Device and method for controllable feeding gas to metallurgical vessel |
| 04/23/2003 | CN1413265A Method for producing pig iron |
| 04/22/2003 | US6551549 Apparatus for the direct reduction of iron oxides |
| 04/22/2003 | US6551548 Apparatus for producing reduced iron and compact drying |
| 04/17/2003 | WO2003031659A1 Method for drying molding containing oxidized metal, method for reducing oxidized metal and rotary hearth type metal reduction furnace |
| 04/17/2003 | WO2003031658A1 Supplying solid feed materials for a direct smelting process |
| 04/17/2003 | US20030071399 Supplying solid feed materials for a direct smelting process |
| 04/17/2003 | US20030070507 Supplying pre-reducing iron to a stationary non-tilting type melting furnace and melting the iron by arc heating mainly comprising radiation heating |
| 04/16/2003 | CN1410553A Method and device for producing molten iron |
| 04/16/2003 | CN1410552A Low apparent density reduction iron powder and its manufacturing method |
| 04/15/2003 | CA2235033C Gasification process and plant for direct reduction reactors |
| 04/10/2003 | WO2003029740A1 Raw material loading device for rotary hearth furnace |
| 04/09/2003 | EP0818543B1 Method for operating shaft furnace |
| 04/08/2003 | US6544314 Process and apparatus for automatically controlling slag foaming |
| 04/03/2003 | WO2003027333A1 Reduced iron mass cooling method and cooling device |
| 04/03/2003 | WO2003027332A1 Method for reducing a particulate material containing a metal, especially iron ore |
| 04/03/2003 | US20030061909 Method and apparatus for making metallic iron |
| 04/02/2003 | EP1298224A1 Method and device for producing molten iron by means of arc heating with minimal refractory index |
| 04/02/2003 | EP1297190A1 Method and installation for the indirect reduction of particulate oxide-containing ores |
| 04/01/2003 | US6540798 Blowing and melting or semi-melting film shaped synthetic resins to produce granular shape having a bulk density of at least 0.3 and an angle of repose of up to 40 degrees; forming milled plastics to ensure a sufficient combustion property |
| 04/01/2003 | CA2402827A1 Method and device for producing molten iron |
| 03/27/2003 | WO2003025231A1 Method for producing reduced iron compact in rotary hearth reducing furnace, reduced iron compact, and method for producing pig iron using the same |
| 03/27/2003 | WO2003025230A1 Byproduct sludge recycling apparatus in ironmaking system |
| 03/27/2003 | WO2002075000A3 Modular shaft for reduction smelting |
| 03/26/2003 | EP1294953A1 Device for directly reducing ore fine and installation for carrying out said method |
| 03/26/2003 | EP1147233B1 Method and apparatus for the direct reduction of iron oxides |
| 03/26/2003 | EP1141421B1 Method and apparatus for the direct reduction of iron oxides |
| 03/26/2003 | EP1042514A4 Method for reforming reducing gas in a fluidized bed process for reduction of ore |
| 03/26/2003 | CN1406286A Direct smelting process and apparatus |
| 03/25/2003 | US6537342 Induction heater located at the bottom center line of the vessel, with the longitudinal access oriented perpendicular to the access of the vessel |
| 03/25/2003 | CA2199268C Method for recovering metal and chemical values |
| 03/19/2003 | EP1293247A2 Reacting method |
| 03/19/2003 | EP1292713A1 Direct smelting process and apparatus |
| 03/19/2003 | EP1292518A2 Rotary hearth furnace with charge slot air shield |
| 03/19/2003 | CN1403595A Coal-iron ore microwave reduction and electric furnace steel-making method and equipment |
| 03/15/2003 | WO2003040417A1 Method and device for treating a fine-particled feedstock especially containing metal |
| 03/13/2003 | WO2003020988A1 Production method of metal iron |
| 03/13/2003 | WO2003020987A1 Method of treating steelmaking waste, and movable hearth furnace therefor |