| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 12/24/2008 | CN101331239A Process for producing metallic iron |
| 12/23/2008 | US7468090 Method for tapping a steel making furnace |
| 12/17/2008 | CN101323889A Direct smelting plant |
| 12/17/2008 | CN100443844C Material feeding apparatus for rotary hearth furnace |
| 12/11/2008 | WO2008149683A1 Reduction treatment apparatus and method of reduction treatment |
| 12/11/2008 | US20080302212 Method for Manufacturing Molten Irons and Apparatus for Manufacturing Molten Irons |
| 12/10/2008 | CN100441701C Method for producing reduced iron compact in rotary hearth reducing furnace, reduced iron compact, and method for producing pig iron using the same |
| 12/09/2008 | US7462219 Production method of metal iron |
| 12/04/2008 | WO2008146112A1 Method and apparatus for the direct reduction of iron ores utilizing syngas |
| 12/04/2008 | WO2008122527A3 Method and device for preparing a reducing agent for use in a metal making process, metal making process and metal making apparatus using said device |
| 12/03/2008 | EP1996735A2 Production of iron using environmentally-benign renewable or recycled reducing agent |
| 12/03/2008 | EP1888791A4 Forehearth |
| 12/03/2008 | CN201158676Y Swinging powder coal ironmaking furnace |
| 12/03/2008 | CN201158670Y Brick embedding construction for refrigeration wall of ironmaking furnace |
| 12/03/2008 | CN100439244C Co发生器 Co generator |
| 11/27/2008 | US20080292488 Method for preparing a metallic article having an other additive constituent, without any melting |
| 11/27/2008 | US20080290566 Method and device for producing pig iron and/or pig iron intermediate products |
| 11/27/2008 | CA2687996A1 Process and equipment for treating product gas produced by the pressure gasification of solid fuels |
| 11/25/2008 | US7455810 Metallurgical reactor for the production of cast iron |
| 11/25/2008 | CA2423166C Method for making reduced iron |
| 11/19/2008 | EP1991711A1 Reduction process and plant |
| 11/19/2008 | EP1163567B1 Mass generation of individual virtual servers, virtual web sites and virtual web objects |
| 11/19/2008 | CN101310027A Tuvere tuyere of melter-gasifier |
| 11/19/2008 | CN101307372A Device for manufacturing and reducing crust pellet and production process |
| 11/19/2008 | CN101307371A Method for directly reducing reduce gas in iron by heating red coke |
| 11/19/2008 | CN101307370A Method for simultaneously producing sponge iron and water-gas |
| 11/19/2008 | CN101307369A Iron-smelting gas generator for producing sponge iron and water-gas |
| 11/18/2008 | US7452497 Furnace sidewall structure of rotary hearth furnace |
| 11/18/2008 | CA2200985C Process for reducing oxide-containing material and system for carrying out this process |
| 11/13/2008 | WO2008134822A1 Improvements in the production of ferro-alloys |
| 11/13/2008 | US20080277842 Apparatus for Manufacturing Molten Irons |
| 11/13/2008 | CA2685210A1 Improvements in the production of ferro-alloys |
| 11/12/2008 | CN100432239C Method of building a direct smelting plant |
| 11/11/2008 | US7449142 Plant for use in continuous steelmaking process |
| 11/05/2008 | EP1799875A4 Production of ferro-alloys |
| 11/05/2008 | CN101300364A Rotary hearth furnace and method of operating the same |
| 11/04/2008 | US7445747 Apparatus for injecting solid particulate material into a vessel |
| 10/29/2008 | CN101294229A Non-blast furnace ironmaking method |
| 10/23/2008 | WO2008126759A1 Method for treating high-temperature waste gas |
| 10/23/2008 | US20080257105 Inserting the tires at a slower rate into an electric arc furnace and separate from the scrap steel, as compared to batch feeding them or feeding them as tires and scrap steel bundles, so that larger quantities of tires at a specific controlled location and time may be used |
| 10/21/2008 | US7438730 Mixing and agglomerating metal oxide, a carbonaceous material of coal, coke, charcoal or carbon-containing blast furnace dust and an organic binder, drying and heating to produce a reduced metal from the metal oxide |
| 10/16/2008 | WO2008122527A2 Method and device for preparing a reducing agent for use in a metal making process, metal making process and metal making apparatus using said device |
| 10/14/2008 | CA2262490C Method and device for producing silicon-rich foundry iron |
| 10/08/2008 | EP1977421A1 Apparatus for manufacturing molten irons |
| 10/08/2008 | CN101280349A High-temperature burden guiding device between pre-reducing furnace and final-reducing furnace |
| 10/08/2008 | CN100424191C Method for directly reducing ferronickel by tunnel kiln using laterite-nickel ore as raw material |
| 10/08/2008 | CN100424190C Sponge iron for furnace charge and its manufacturing method |
| 10/01/2008 | EP1974061A1 Method for manufacturing molten irons and apparatus for manufacturing molten irons |
| 10/01/2008 | EP1974060A1 Apparatus for manufacturing molten irons |
| 10/01/2008 | EP1802780A4 Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same |
| 10/01/2008 | CN101275091A Molded coal for smelting reduction iron-smelting process and manufacturing method thereof |
| 09/25/2008 | US20080229881 Solid metal material; controlling particle size distribution; supplying hydrocarbons and oxygen; using fluidized beds; controlling agglomeration |
| 09/24/2008 | CN101270401A Pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus |
| 09/24/2008 | CN101269315A Modified spherical sponge iron for wastewater treatment and preparation method |
| 09/17/2008 | CN101265510A Fusion reduction reaction furnace and fusion smelting method for metal |
| 09/16/2008 | US7425230 Method and device for producing pig iron and/or pig iron intermediate products |
| 09/10/2008 | CN101260448A Fusion reduction iron-smelting method for directly using concentrate powder |
| 09/10/2008 | CN101260446A End reducing furnace for non-blast-furnace iron smelting |
| 09/09/2008 | US7422622 Supplying solid feed materials for a direct smelting process |
| 09/04/2008 | US20080210055 Direct Reduction Apparatus and Process |
| 08/28/2008 | US20080202061 Direct Smelting Plant |
| 08/26/2008 | US7416697 Method for preparing a metallic article having an other additive constituent, without any melting |
| 08/21/2008 | WO2008100238A1 Device for producing iron or steel from iron oxide materials |
| 08/21/2008 | US20080196549 Direct Reduction Process Using a Single Fluidised Bed |
| 08/20/2008 | EP1957679A2 Conveying system, combined system, and method for coupling metallurgical processes |
| 08/20/2008 | EP1587962A4 An improved smelting process for the production of iron |
| 08/20/2008 | CN201104092Y Built-in coal based sponge iron shaft furnace |
| 08/19/2008 | US7413590 Use of an induction furnace for the production of iron from ore |
| 08/14/2008 | WO2008096592A1 Rotary hearth reducing furnace and method of operating the same |
| 08/06/2008 | EP1297190B1 Method and installation for the indirect reduction of particulate oxide-containing ores |
| 08/06/2008 | CN101235426A Technique for preparing iron refined powder by troilite mixing burning brown hematite and specularite |
| 08/06/2008 | CN100408699C 直接熔炼设备 Direct smelting plant |
| 07/31/2008 | WO2008091773A1 Continuous production of titanium by the metallothermic reduction of ticl4 |
| 07/30/2008 | EP1576198B1 An apparatus for manufacturing moltens irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same |
| 07/30/2008 | EP1553196B1 Ferronickel and process for producing raw material for ferronickel smelting |
| 07/30/2008 | CN101230434A Method for producing high-activity granular carbon reductant |
| 07/30/2008 | CN101230411A Carbonaceous pellet two-stage jumping type temperature-control reduction smelting equipment and method |
| 07/24/2008 | WO2008089060A1 System and method for cooling and removing iron from a hearth |
| 07/24/2008 | CA2675311A1 System and method for cooling and removing iron from a hearth |
| 07/23/2008 | EP1591739B1 Seal structure of solid feeding screw, and method of manufacturing reduced metal using the seal structure |
| 07/16/2008 | EP1664354A4 Self-reducing, cold-bonded pellets |
| 07/09/2008 | EP1740729A4 Combined pre-treatment process for enabling feed material to be charged in direct reduction processes |
| 07/09/2008 | EP1718775A4 Pre-treatment process for feed material for direct reduction process |
| 07/09/2008 | CN101215614A Reducing chamber and heating chamber multilayer obturation alternation and fusion gasification combination metal smelting method |
| 07/03/2008 | WO2008078938A1 Apparatus for manufacturing molten iron and method for manufacturing molten iron |
| 07/03/2008 | WO2008078937A1 Apparatus for restoring fine irons and apparatus for manufacturing molten iron comprising the same |
| 07/03/2008 | WO2008078891A1 Apparatus and method for manufacturing molten iron |
| 07/03/2008 | WO2008063897A3 Multiple hearth furnace for reducing iron oxide |
| 07/02/2008 | EP1939306A2 Inducing swirl in a gas flow |
| 07/02/2008 | EP1740728A4 Metallurgical processing installation |
| 07/02/2008 | CN101210274A Vertical natural gas iron-smelting furnace |
| 07/02/2008 | CN100398669C Method of manufacturing low carbon sponge iron using microwave vertical furnace |
| 07/02/2008 | CN100398668C Technological process and apparatus for heating high concentration CO and other reducing gas |
| 07/02/2008 | CN100398667C Method for utilizing slag |
| 07/01/2008 | US7393379 Inserting the tires at a slower rate into an electric arc furnace and separate from the scrap steel, as compared to batch feeding them or feeding them as tires and scrap steel bundles, so that larger quantities of tires at a specific controlled location and time may be used |
| 06/26/2008 | WO2008075870A1 Apparatus for generating energy using a sensible heat during manufacturing of molten iron and method for generating energy using the same |
| 06/26/2008 | DE102006062689A1 Vertical shaft furnace for production of directly reduced iron, has furnace gas outlet whose central axis is slanted with regard to horizontal axis of shaft furnace by preset angle |
| 06/26/2008 | CA2673074A1 Apparatus for generating energy using a sensible heat during manufacturing of molten iron and method for generating energy using the same |
| 06/25/2008 | EP1784514A4 Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same |
| 06/25/2008 | CN101205565A Method for producing direct reduction iron by hybrid process |