| Patents for C21B 13 - Making spongy iron or liquid steel, by direct processes (6,991) |
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| 02/21/2002 | US20020022208 Method and apparatus for charging raw and carbonaceous materials into a moving hearth furnace |
| 02/20/2002 | CN1079280C Method for returning finely-divided solid carried by gas extracted from reactor vessel |
| 02/14/2002 | WO2002012570A2 Method for producing metallic iron |
| 02/13/2002 | EP1179601A1 Method and apparatus for charging raw and carbonaceous materials into a moving hearth furnace |
| 02/13/2002 | CN1335412A Method for producing granulated metal iron |
| 02/06/2002 | EP1177322A2 A fluidized bed reactor for preventing the fine iron ore from sticking therein and method therefor |
| 01/31/2002 | WO2002008471A1 A direct smelting process and apparatus |
| 01/31/2002 | US20020011132 Process to preheat and carburate directly reduced iron (DRI) to be fed to an electric arc furnace (EAF) |
| 01/31/2002 | DE19782202C2 Direktreduktion von Metalloxid-Agglomeraten Direct reduction of metal oxide agglomerates |
| 01/31/2002 | CA2411789A1 A direct smelting process and apparatus |
| 01/30/2002 | CN1078618C Refractory wall |
| 01/30/2002 | CN1078617C Production of fuel gas and apparatus thereof |
| 01/29/2002 | US6342179 Furnace for the direct reduction of iron oxides |
| 01/24/2002 | US20020008337 Method of producing molten metal |
| 01/24/2002 | US20020007699 Apparatus and method for optimizing the use of oxygen in the direct reduction of iron |
| 01/23/2002 | CN1078233C Method of coking coal |
| 01/22/2002 | US6340378 Method for screening hot briquetted direct reduced iron |
| 01/17/2002 | US20020005444 Pretreatment apparatus for raw materials for production of reduced iron |
| 01/17/2002 | US20020005089 Method of and apparatus for manufacturing the metallic iron |
| 01/16/2002 | EP1034312B1 Installation for reducing iron oxides and smelting iron |
| 01/15/2002 | CA2228154C Processing of oxidic slags |
| 01/10/2002 | WO2001073137A3 Method of producing metallic iron and raw material feed device |
| 01/10/2002 | WO2001073136A3 Process for manufacturing molten metal iron |
| 01/10/2002 | US20020003325 Reduced iron discharger in rotary hearth reducing furnace |
| 01/10/2002 | US20020003324 Apparatus for producing reduced iron |
| 01/10/2002 | US20020002880 Process to preheat and reduce directly reduced iron (DRI) to be fed to an electric arc furnace (EAF) |
| 01/09/2002 | EP1170384A1 Facilities for reducing metal oxide, method for operating the facilities and moldings as law material to be charged to reduction furnace |
| 01/09/2002 | EP1169484A1 Device for producing hot-briquetted metallic sponge, especially hot-briquetted sponge iron |
| 01/09/2002 | EP1032714B1 Electric arc low-shaft smelting furnace with a central tube with telescopic electrodes and a sliding upper receptacle lid |
| 01/09/2002 | CN1330723A Method of producing molten iron in duplex furnaces |
| 01/09/2002 | CN1330162A Process and equipment for preparing spongy iron by two-step reduction method |
| 01/09/2002 | CN1330161A Operating method of rotary furnace bed type reduction furnace |
| 01/08/2002 | US6336954 Process and plant for the direct reduction of particulate iron-oxide-containing material |
| 01/08/2002 | CA2149225C High-production rotary furnace steelmaking |
| 01/03/2002 | WO2002103064A1 Method for producing granular metal |
| 01/03/2002 | WO2002000944A1 Method and device for directly reducing particulate oxide-containing ores |
| 01/03/2002 | WO2002000943A1 Device for directly reducing ore fine and installation for carrying out said method |
| 01/03/2002 | US20020000687 Method of producing reduced iron and production facilities therefor |
| 01/02/2002 | EP1167547A1 Method of producing iron nuggets |
| 01/02/2002 | EP1167546A1 Method of operating a rotary hearth furnace |
| 01/02/2002 | EP1165845A2 Method and apparatus for removing undesirable metals from iron-containing materials |
| 01/02/2002 | EP1165844A1 A device for preventing back mixture in a fluidized bed reactor |
| 01/02/2002 | EP0823487B1 Melt reduction equipment and operating method |
| 01/01/2002 | US6335945 Electric ARC low-shaft smelting furnace with a central tube with telescopic electrodes and a sliding upper receptacle lid |
| 01/01/2002 | US6334883 Pellets comprising carbonaceous material and ore comprising iron oxide, wherein maximum fluidity of carbonaceous material in softening and melting and percentage of iron oxide particles of small size are within specified range |
| 01/01/2002 | CA2211021C Method and device for cooling hot briquetted spongy iron |
| 01/01/2002 | CA2087602C Method for controlling the conversion of iron-containing reactor feed into iron carbide |
| 12/29/2001 | CA2351969A1 Method of operating a rotary hearth furnace |
| 12/27/2001 | US20010054329 Method for producing molten iron in duplex furnaces |
| 12/25/2001 | US6332911 Melting metals with gasification using coal and oxygen |
| 12/20/2001 | WO2001096800A2 Rotary hearth furnace with charge slot air shield |
| 12/20/2001 | WO2001096233A1 Method and apparatus for supplying hydrogen and portable cassette for supplying hydrogen |
| 12/20/2001 | US20010052556 Injector |
| 12/20/2001 | US20010052273 Iron production method of operation in a rotary hearth furnace and improved furnace apparatus |
| 12/20/2001 | US20010052272 Production of high titania slag from ilmenite |
| 12/20/2001 | CA2411068A1 Rotary hearth furnace with charge slot air shield |
| 12/20/2001 | CA2389276A1 Method and apparatus for supplying hydrogen and portable cassette for supplying hydrogen |
| 12/19/2001 | EP1163567A2 Mass generation of individual virtual servers, virtual web sites and virtual web objects |
| 12/19/2001 | EP1163375A1 Fluidized bed breakage prevention system for fluidized bed reduction reactor |
| 12/19/2001 | EP0871782B1 Process for producing sponge iron by direct reduction of iron oxide-containing materials |
| 12/19/2001 | CN1327072A Method and device for making metal iron |
| 12/18/2001 | CA2186538C Method for cooling graphite electrodes used for metal melting and refining in an electric arc furnace and a ladle |
| 12/13/2001 | US20010049980 Method and apparatus for making metallic iron |
| 12/12/2001 | EP0783593B1 Method for recovering metal and chemical values |
| 12/12/2001 | CN1326515A Direct-current arc furnace comprising centric charging shaft for producing steel and method therefor |
| 12/11/2001 | US6328946 Two step process for the conversion of iron oxide into iron carbide using gas recycle |
| 12/11/2001 | US6328783 Producing iron from solid iron carbide |
| 12/11/2001 | CA2202918C Process for producing liquid raw iron or steel basic products and iron sponge and plant for implementing it |
| 12/06/2001 | US20010048913 Fluidized bed reactor wherein charged grainy iron oxide is reduced and carburized by high temperature and high pressure gas introduced from the bottom of the reactor |
| 12/06/2001 | US20010048707 Process for melting sponge iron and electric-arc furnace for carrying out the process |
| 12/06/2001 | DE19953298C2 Verfahren und Vorrichtungen zur Leistungssteigerung und Brennstoffeinsparung bei der Erzeugung von Eisen Methods and apparatus to improve performance and fuel saving in the production of iron |
| 12/06/2001 | DE10126356A1 Process for melting a metal sponge comprises inserting the sponge into an electric arc furnace forming a metal sponge stream close to the electrode on the bath meniscus, and blowing oxygen into the melt |
| 12/05/2001 | EP1160338A1 Process to preheat and reduce directly reduced iron (DRI) to be fed to an electric arc furnace (EAF) |
| 12/05/2001 | EP1160337A1 Process to preheat and carburate directly reduced iron (DRI) to be fed to an electric arc furnace (EAF) |
| 12/05/2001 | EP1160336A1 Method of and apparatus for manufacturing metallic iron |
| 12/05/2001 | CN1325459A Iron production method of operation in a rotary hearth furnace and improved furnace apparatus |
| 11/30/2001 | CA2349060A1 Process for melting sponge iron and electric-arc furnace for carrying out the process |
| 11/29/2001 | WO2001090424A1 Iron ore reduction method and installation therefor |
| 11/29/2001 | WO2001046478A3 A fluidized bed reactor for preventing the fine iron ore from sticking therein and method therefor |
| 11/29/2001 | US20010045142 Process for thermal treatment of residual materials containing heavy metal and iron oxide |
| 11/29/2001 | CA2407401A1 Iron ore reduction method and installation therefor |
| 11/28/2001 | EP1157137A1 Method for optimizing the layout and operation of a reduction method |
| 11/28/2001 | EP1157136A1 Method for decreasing elutriation loss of fine iron ore in fluidized bed type reducing operation |
| 11/28/2001 | EP1025267B1 Method for smelting fine grained direct reduced iron in an electric arc furnace |
| 11/28/2001 | EP0996749B1 Method for controlling a smelting reduction process |
| 11/28/2001 | EP0914476B1 Apparatus for keeping optimal penetration depth formed at front end of oxygen tuyere and method for keeping the same |
| 11/28/2001 | EP0896636B1 Smelting-reduction apparatus, and method for producing molten pig iron using the smelting reduction apparatus |
| 11/28/2001 | EP0777751B1 Method and apparatus for electric steelmaking |
| 11/28/2001 | CN1324411A Method for producing a metal melt and corresponding multifunction lance |
| 11/28/2001 | CN1075560C Method and equipment for producing direct reduced iron |
| 11/27/2001 | US6322745 Direct smelting vessel and direct smelting process |
| 11/22/2001 | WO2001088207A1 Method and device for producing pig iron or liquid steel pre-products from charge materials containing iron ore |
| 11/21/2001 | EP0990053B1 Process and plant for producing iron smelt in an electric arc furnace by using agglomerated, iron-containing steel work residues |
| 11/21/2001 | EP0792939B1 Method of melting tinned iron scrap |
| 11/21/2001 | CN1323359A Method for the heat treatment of residues containing heavy metals |
| 11/21/2001 | CN1323358A Method for producing directly reduced, desulfurized iron |
| 11/21/2001 | CN1323357A A process and an apparatus for producing metals and metal alloys |
| 11/21/2001 | CN1075116C Process and apparatus for producing molten pig iron or molten steel preproducts |
| 11/20/2001 | US6319302 Method for manufacturing reduced iron agglomerates and apparatus there for |
| 11/20/2001 | US6319301 Mineral iron is fed from above into the furnace, mixture of high temperature gas consisting of reducing gas based on hydrogen and carbon monoxide is injected, reduced mineral is removed from the furnace |