| Patents for C22B 4 - Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys (1,486) |
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| 06/12/2002 | CN1353442A Apparatus and method for producing indium ion beam |
| 06/12/2002 | CN1086209C Production method of high-grade silicon-calcium alloy and its ore-smelting furnace |
| 06/05/2002 | CN1352309A Process for producing iron alloy by using raw coal as reductant |
| 05/29/2002 | EP1209243A2 Multifrequency equipment for sensing the state of the electrodes in electric-arc furnaces |
| 05/28/2002 | US6395045 Metal carbides, nitrides and borides, carbon reduced by smelting in arc or plasma furnace |
| 05/23/2002 | WO2002040748A1 Intermetallic compounds |
| 05/23/2002 | WO2002040725A2 Metal and alloy powders and powder fabrication |
| 05/23/2002 | CA2429024A1 Metal and alloy powders and powder fabrication |
| 05/22/2002 | CN1350064A One-step process of smelting RE-Si-Mg alloy in arc furnace |
| 05/21/2002 | US6391081 Metal purification method and metal refinement method |
| 05/16/2002 | US20020056342 Apparatus and method for generating indium ion beam |
| 04/25/2002 | US20020047718 Multifrequency equipment for sensing the state of electrodes in electric-arc furnaces |
| 04/16/2002 | US6372009 Method for reducing CO and VOC's in steelmaking furnace off-gas stream without forming or exhausting undesirable products |
| 04/10/2002 | CN1343794A V2O3 electro-aluminothermic process for smelting FeV |
| 03/26/2002 | US6361580 Continuous process for manufacturing aluminum metal from aluminum oxide and reducing gas (hydrocarbon gases like methane, carbon monoxide, or hydrogen) with valuable by-products; more efficient and economical process |
| 03/12/2002 | US6355904 Method and system for high-temperature waste treatment |
| 03/06/2002 | CN2480379Y Mine heating furnace for one-stage method production of rare earth ferro-silicon alloy |
| 02/27/2002 | EP0906249B1 Method and system for high-temperature waste treatment |
| 01/23/2002 | CN1332256A Rare earth-silicon alloy series producing process |
| 01/10/2002 | DE10031988A1 Verfahren und Anlage zur Aufbereitung von beim Sprühkompaktieren in Form von Pulver anfallendem metallischem Overspray-Material Method and apparatus for processing accumulating during spray in the form of powder overspray metallic material |
| 01/09/2002 | EP1170395A1 Process and apparatus for treating the pulverized metallic overspray-material during spray compacting |
| 12/20/2001 | US20010052272 Production of high titania slag from ilmenite |
| 12/19/2001 | CN1327076A Process for producing iron alloy by using raw wal instead of coke |
| 11/28/2001 | EP1157139A1 Treatment of metal sulphide concentrates by roasting and arc furnace smelt reduction |
| 11/21/2001 | CN1322849A Compound Si-Ca-Mg deoxidant producing process and equipment |
| 11/21/2001 | CN1322848A Compound Si-Ca-Ba-Mg deoxidant producing process and equipment |
| 11/21/2001 | CN1322847A Compound Si-Ca-Ba deoxidant producing process and equipment |
| 11/15/2001 | WO2001062996A9 Electrolytic reduction of metal oxides such as titanium dioxide and process applications |
| 11/15/2001 | WO2000049188A9 Refining of tantalum and tantalum scrap with carbon |
| 11/07/2001 | EP1015648B1 Hard material titanium carbide based alloy, method for the production and use thereof |
| 11/07/2001 | CN1320714A Process for preparing Al-Si alloy in DC arc furnace |
| 10/11/2001 | WO2000023628A9 Low cost high speed titanium and its alloy production |
| 10/04/2001 | WO2001072634A1 Method for recuperating thermal energy of gases of an electrometallurgical furnace and use for making silica powder |
| 10/04/2001 | EP0904420B1 Metal containing compound reduction and melting process |
| 09/26/2001 | CN1314498A Process for making Al-Si alloy |
| 09/13/2001 | WO2001066809A1 Chromium-containing metal and method for producing the same |
| 08/30/2001 | WO2001062996A1 Electrolytic reduction of metal oxides such as titanium dioxide and process applications |
| 08/30/2001 | WO2001062995A1 Method for the manufacture of metal foams by electrolytic reduction of porous oxidic preforms |
| 08/30/2001 | WO2001062994A1 Method of manufacture for ferro-titanium and other metal alloys electrolytic reduction |
| 08/30/2001 | CA2401034A1 Electrolytic reduction of metal oxides such as titanium dioxide and process applications |
| 08/22/2001 | CN1309724A Removal of oxygen from metal oxides and solid solutions by electrolysis in fused salt |
| 06/13/2001 | CN1067112C Method for veduction and melting of compounds contg. metallic elements |
| 04/18/2001 | CN1292037A Method for production of aluminium |
| 04/11/2001 | CN1290758A Method for producing iron alloy by raw coal instead of coke |
| 04/04/2001 | EP1088113A1 Removal of oxygen from metal oxides and solid solutions by electrolysis in a fused salt |
| 03/06/2001 | US6197082 Refining of tantalum and tantalum scrap with carbon |
| 02/22/2001 | WO2001012866A1 Pyrometallurgy of zinc and closed furnace for zinc smelting |
| 02/22/2001 | WO2000073247A9 Thermal device and method for production of carbon monoxide and hydrogen by thermal dissociation of hydrocarbon gases |
| 02/21/2001 | EP0719348B1 METHOD FOR PRODUCTION OF FeSi |
| 02/13/2001 | US6187226 A thermodynamically stable high temperature process; heating the reactant stream and expanding through the outlet end of the reaction chamber to cool the gaseous stream, converting thermal energy to kinetic energy |
| 02/07/2001 | CN1282797A Liquid-state mixing process for preparing si-Al-Ba iron |
| 01/31/2001 | CN1281905A Production method of high-grade silicon-calcium alloy and its ore-smelting electric furnace |
| 01/03/2001 | CN1060220C Smelting method for silicon-calcium alloy and middle-frequency induction furnace |
| 12/27/2000 | CN2412018Y Enclosed zinc-smelting furnace |
| 12/20/2000 | EP1060278A1 Method for production of aluminium |
| 12/07/2000 | WO2000073247A1 Thermal device and method for production of carbon monoxide and hydrogen by thermal dissociation of hydrocarbon gases |
| 11/14/2000 | US6146437 Metal containing compound reduction and melting process |
| 10/24/2000 | US6136060 Low cost high speed titanium and its alloy production |
| 08/31/2000 | WO2000050652A1 Treatment of metal sulphide concentrates by roasting and arc furnace smelt reduction |
| 08/24/2000 | WO2000049188A1 Refining of tantalum and tantalum scrap with carbon |
| 08/01/2000 | US6096109 Chemical component recovery from ligated-metals |
| 07/05/2000 | EP1015648A1 Hard material titanium carbide based alloy, method for the production and use thereof |
| 06/20/2000 | US6077474 Ball formation apparatus |
| 06/14/2000 | CN1256322A Non-ferroun metal smelting method utilizing MF bath and MF bath furnace |
| 06/13/2000 | US6074533 Tapering the reaction zone of the reaction chamber |
| 05/31/2000 | CN1053016C Consumable electrode and alloy ingot casting and forging metal product using the electrode and its method |
| 05/24/2000 | CN1052759C Fast quench reactor and method |
| 04/27/2000 | WO2000023628A2 Low cost high speed titanium and its alloy production |
| 04/19/2000 | EP0919111A4 Method and apparatus for removing a molten material with a vacuum from a chamber |
| 04/19/2000 | CN1051579C Method and apparatus for smelting high melting metal by plasma |
| 03/09/2000 | WO2000012769A1 Method for the continuous production of metal alloys |
| 03/02/2000 | DE19839670A1 Verfahren zur kontinuierlichen Herstellung von Metall-Legierungen A process for the continuous production of metal alloys |
| 01/05/2000 | CN2357017Y Three-phase power frequency induction diathermy furnace for processing non-ferrous metal section |
| 01/05/2000 | CN1048003C Method for obtaining ziroonia based item |
| 12/16/1999 | WO1999064638A1 Removal of oxygen from metal oxides and solid solutions by electrolysis in a fused salt |
| 09/28/1999 | US5958105 Process for preparing metallic beryllium pebbles |
| 09/02/1999 | WO1999043859A1 Method for production of aluminium |
| 09/02/1999 | CA2321708A1 Method for production of aluminium |
| 09/01/1999 | CN1227270A Smelting method for silicon-calcium alloy |
| 08/24/1999 | US5942023 Forming a plasma arc in a sealed atmosphere plasma arc furnace; introducing arc furnace dust into the furnace to form an off-gas which includes heavy metal and chloride vapors, contacting gas with getter agent to react with chlorine |
| 08/10/1999 | US5935293 Fast quench reactor method |
| 07/21/1999 | CN1044261C Process for smelting duriron with raw coal |
| 06/09/1999 | CN1219207A Metal containing compound reduction and melting process |
| 06/08/1999 | CA2054205C Process for recovering valuable metals from spent catalysts |
| 06/02/1999 | EP0919111A1 Method and apparatus for removing a molten material with a vacuum from a chamber |
| 05/05/1999 | CN1043249C Process for production of compound deoxidizer of Si-Al-Ba-Fe alloy in one-step in blast furnace |
| 04/29/1999 | WO1999020582A1 System and method of producing pure elements from parent compounds |
| 04/07/1999 | EP0906249A2 Method and system for high-temperature waste treatment |
| 04/01/1999 | WO1999015705A1 Hard material titanium carbide based alloy, method for the production and use thereof |
| 04/01/1999 | DE19741418A1 Hartstofflegierung auf Basis von Titancarbid, Verfahren zu deren Herstellung sowie deren Verwendung A hard facing alloy based on titanium carbide, processes for their preparation and their use |
| 04/01/1999 | CA2304101A1 Method for producing an abrasive grain |
| 03/31/1999 | EP0904420A1 Metal containing compound reduction and melting process |
| 03/31/1999 | EP0904418A1 Microwave treatment of metal bearing ores and concentrates |
| 03/16/1999 | US5882581 Apparatus for the processing of solid mixed waste containing radioactive and hazardous materials |
| 12/22/1998 | US5851264 Method and agglomerates for production of FeSi |
| 12/15/1998 | CA2096665C Pyrometallurgical method for recovering volatile metals from sulfidic raw materials |
| 12/08/1998 | US5846287 Consumable electrode method for forming micro-alloyed products |
| 10/21/1998 | EP0872851A1 Process for preparing metallic beryllium pebbles |
| 10/20/1998 | US5824988 Reactor and method for the treatment of particulate matter by electrical discharge |
| 10/20/1998 | US5824133 Treating ore in a resonant microwave cavity while maximizing electric field strength |