| Patents for C22B 5 - General processes of reducing to metals (5,378) |
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| 10/01/1997 | CN1161064A Method of making metals and other elements |
| 10/01/1997 | CN1161062A Process for producing raw iron or and iron sponge and its equipment |
| 09/17/1997 | EP0795036A1 Method for producing iron feedstock |
| 09/16/1997 | US5667556 Method of reprocessing zinc- and iron oxide-containing residual material |
| 09/16/1997 | US5667555 Method for the removal of calcium by products during the production of an iron feedstock |
| 09/16/1997 | US5667553 Methods for recycling electric arc furnace dust |
| 09/09/1997 | CA2019023C Nickel foam |
| 09/04/1997 | WO1997032047A1 Hermetically closeable smelting/refining furnace |
| 08/19/1997 | US5658368 Reduced dusting bath method for metallurgical treatment of sulfide materials |
| 08/07/1997 | WO1997028287A1 Method for processing a powdery material, and apparatus therefor |
| 08/06/1997 | EP0787214A1 Plant and process for producing raw iron and/or sponge iron |
| 08/05/1997 | CA2061088C Method for recovering metal contents of metallurgic waste precipitates or waste dusts by suspension smelting |
| 07/31/1997 | WO1997027143A1 Production of high purity silicon metal, aluminium, their alloys, silicon carbide and aluminium oxide from alkali alkaline earth alumino silicates |
| 07/30/1997 | EP0786016A1 Roasting of titaniferous materials |
| 07/24/1997 | WO1997026380A1 Chemical component recovery from ligated-metals |
| 07/16/1997 | EP0783593A1 Method for recovering metal and chemical values |
| 07/16/1997 | EP0783590A1 Process for reducing oxide-containing material and system for carrying out this process |
| 07/15/1997 | US5647888 Process for producing metals and metal alloys in a smelt reduction vessel |
| 06/25/1997 | EP0780189A1 Process for the aluminothermic production of a steel melt |
| 06/23/1997 | CA2193159A1 Method for the aluminothermal production of molten steel |
| 06/19/1997 | WO1997021843A1 Process for processing waste or fractions thereof, especially light car shredder fractions |
| 06/12/1997 | WO1997020958A1 Recovery of cobalt from slag |
| 06/11/1997 | EP0777753A1 Method of making metals and other elements |
| 05/22/1997 | WO1997018338A1 Method of processing finely divided material incorporating metal based constituents |
| 05/22/1997 | CA2237874A1 Method of processing finely divided material incorporating metal based constituents |
| 05/15/1997 | WO1997017473A1 Duplex procedure for the production of metals and metal alloys from oxidic metal ores |
| 05/09/1997 | WO1997016576A1 Production of metal such as aluminium, magnesium, silicon and the like from metal oxide compounds |
| 05/09/1997 | WO1997016275A1 Method for the reduction of metallic compounds |
| 05/06/1997 | CA2087878C Gasifier burner for powdered solid fuels and method for using the same |
| 04/23/1997 | CN1148409A A. Edlinger (CH) |
| 04/23/1997 | CN1034676C Method for smelting silicon-aluminium alloy with ore in ore hearth |
| 04/17/1997 | WO1997013881A1 Treatment of waste products that contain organic substances |
| 03/25/1997 | US5613997 Converting carbonaceous material to reducing gas |
| 03/25/1997 | CA2039687C Method for operation of flash smelting furnace |
| 03/20/1997 | DE19637180A1 Appts. for direct reduction of iron oxide particles |
| 03/18/1997 | US5611989 Method for producing easily volatile materials |
| 03/14/1997 | CA2185248A1 Circulating fluidized bed direct reduction system |
| 03/12/1997 | EP0621855B1 Method for the recovery of zinc oxide |
| 03/06/1997 | WO1997007917A1 Process for the production of ultrafine particles |
| 03/05/1997 | EP0557312B1 Direct sulphidization fuming of zinc |
| 02/26/1997 | CN1143681A Method of reducing metal oxide in rotary hearth furnace heated by oxidizing flame |
| 02/20/1997 | WO1997006281A1 Reducing iron oxides in rotary hearth furnace |
| 02/11/1997 | US5601625 Process and device for removing heavy metals and compounds containing heavy metals |
| 01/22/1997 | EP0754245A1 Method of manufacturing pig iron or steel and cement clinker from slags |
| 01/21/1997 | US5595347 Specific gravity separation stage, low intensity magnetic separation stage, single stage magnetic roast with controlled oxygen potential, low to medium intensity magnetic separation stage |
| 01/03/1997 | WO1997000333A1 The processing of zinc bearing materials in a dc arc furnace |
| 12/12/1996 | WO1996039703A1 Producing halogenated products from metal halide feeds |
| 12/11/1996 | EP0747491A1 Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame |
| 12/11/1996 | EP0696327B1 An electrical method for conversion of molecular weights of particulates |
| 12/10/1996 | US5582631 Combining with iron-poor material such as exhaust fumes; treating with ammonium chloride leaching solution; separation; roasting |
| 12/07/1996 | CA2175750A1 Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame |
| 12/05/1996 | WO1996038380A1 Metal and fluorine values recovery from fluoride salt matrices |
| 12/05/1996 | DE19519722A1 Pyrometallurgical prodn. of niobium oxide |
| 12/04/1996 | EP0745692A1 Method and apparatus of treating dusts containing oxides |
| 12/03/1996 | CA2008167C Method and apparatus for manufacturing high-grade nickel matte |
| 11/26/1996 | US5578109 Removal of radioactive impurities by contacting with a glassy material at high temperature, ilmenite, rutile |
| 11/26/1996 | CA1338731C Method of smelting reduction of chromium raw materials and a smelting reduction furnace thereof |
| 11/19/1996 | US5575831 Reducing zirconium or vanadium oxides with calcium |
| 11/12/1996 | US5574956 Oxidizing molten matte, smelting |
| 11/07/1996 | WO1996034987A1 Process for recovering metals from iron oxide bearing masses |
| 11/07/1996 | CA2219415A1 Process for recovering metals from iron oxide bearing masses |
| 11/06/1996 | EP0741192A1 Method for working up zinc and iron oxide bearing residual material |
| 11/06/1996 | CA2175742A1 Method of reprocessing zinc- and iron oxide-containing residual material |
| 11/05/1996 | US5571306 Feedstock for steel making |
| 10/23/1996 | EP0689615B1 Method of recovering zinc |
| 10/22/1996 | US5567224 Alloying |
| 10/17/1996 | WO1996032516A1 Process for treating residues arising in industrial processes and the burning of rubbish |
| 10/17/1996 | CA2218051A1 Process for treatment of residues which arise in industrial processes and in waste incineration |
| 10/16/1996 | EP0737113A1 Method and furnace for treatment of ash |
| 10/15/1996 | US5565016 Method for suspension smelting |
| 10/10/1996 | WO1996031631A1 Treatment of fly ash |
| 10/10/1996 | CA2217350A1 Treatment of fly ash |
| 10/09/1996 | EP0596107B1 Fluidized bed preliminary reducing furnace for raw material comprising oxide |
| 10/09/1996 | CN1032975C Method for smelting iron alloy in ore roaster and carbonaceous reductant thereby |
| 09/26/1996 | WO1996029435A1 Process for reducing ore fines and arrangement for carrying out the process |
| 09/26/1996 | CA2215678A1 Process for reducing ore fines and arrangement for carrying out the process |
| 09/18/1996 | EP0731851A1 Method of processing solid residues from waste-incineration plants and a device for carrying out the method |
| 09/18/1996 | CN1131443A Roasting of titaniferous materials |
| 09/17/1996 | US5556447 Detoxification of mercury contaminated soils with vaporization, contacting with carbon, separation and recovering mercury by heating, purging and condensing |
| 08/15/1996 | WO1996024696A1 Method of manufacturing pig iron or steel and cement clinker from slags |
| 08/13/1996 | US5545800 Decomposition using a reducing agent |
| 08/13/1996 | US5545251 Using horizontal reactor with ore-reducing gas and heat vehicle gas in fluidized bed |
| 07/30/1996 | US5540754 Method for condensation of metal vapors to the liquid state |
| 07/23/1996 | US5538532 Methods for recycling electric arc furnace dust |
| 07/23/1996 | CA2051838C Metallothermic reduction of rare earth fluorides |
| 07/21/1996 | CA2167358A1 Method of producing iron carbide |
| 07/16/1996 | US5536294 Process for extracting precious metals from volcanic ore |
| 07/03/1996 | EP0639091B1 Method for indirect chemical reduction of metals in waste |
| 07/02/1996 | US5531424 Fluidized bed direct reduction plant |
| 06/25/1996 | US5529291 Circulating fluidized bed direct reduction system |
| 06/12/1996 | EP0489083B1 Smelting of metallurgical waste materials containing iron compounds and toxic elements |
| 06/12/1996 | EP0417296B1 Direct smelting process |
| 06/12/1996 | CN1124297A Technique for producing metal by directly smelting sulphide ore |
| 06/06/1996 | WO1996017090A1 Method for producing iron feedstock |
| 06/06/1996 | CA2206555A1 Method for producing iron feedstock |
| 05/14/1996 | US5517004 Process and apparatus for removing contaminations from bulk material |
| 04/25/1996 | WO1996012045A1 Plant and process for producing raw iron and/or sponge iron |
| 04/16/1996 | US5507973 Highly reactive zerovalent metals from metal cyanides |
| 04/04/1996 | WO1996010097A1 Method of processing solid residues from waste-incineration plants and a device for carrying out the method |
| 04/04/1996 | WO1996010094A1 Process for reducing oxide-containing material and system for carrying out this process |