| Patents for C22B 5 - General processes of reducing to metals (5,378) |
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| 11/02/1994 | EP0621905A1 Process for the reduction of hexavalent chromium contained in the residue resulting from the processing of chromium minerals |
| 11/02/1994 | EP0621903A1 Method for reducing material containing metal oxide in solid phase. |
| 11/01/1994 | CA1332789C Method of producing magnesium by the metallothermic reduction of magnesium oxide |
| 10/27/1994 | WO1994024318A1 An electrical method for conversion of molecular weights of particulates |
| 10/27/1994 | CA2160773A1 An electrical method for conversion of molecular weights of particulates |
| 10/26/1994 | CN1094094A Manufacturing method for high-purity chrome plate/target for film plating on glass |
| 10/25/1994 | US5358699 Isolation of gold, silver and/or platinum by oxidation using lignins or tannins containing ortho-quinones or catechol as oxidation promoters before treatment with other chemicals |
| 10/25/1994 | US5358549 Method of indirect chemical reduction of metals in waste |
| 10/25/1994 | US5358544 Circulating molten zinc and copper sulfate; oxidation |
| 10/18/1994 | US5356524 Electrical method for conversion of molecular weights of particulates |
| 10/18/1994 | US5355814 Gasifier burner for powdered solid fuels and method for using the same |
| 10/12/1994 | CN1093411A Metallurgical processes and apparatus |
| 10/11/1994 | US5354354 Adjusting the oxide content of the reaction mixture |
| 10/05/1994 | EP0618302A1 Metallurgical processes and appartus |
| 09/30/1994 | CA2115625A1 Metallurgical processes and apparatus |
| 09/29/1994 | WO1994021832A1 Method of recovering zinc |
| 09/28/1994 | EP0617136A1 Installation for iron ore reduction in a circulating fluidized bed with solid materials flow regulating means |
| 09/27/1994 | CA2055910C Fluxless solder |
| 09/27/1994 | CA1332160C Particle separator |
| 09/21/1994 | EP0615473A1 Method and device for removing one or more contaminations from a bulk material. |
| 09/19/1994 | CA2096050A1 Method of recovering zinc |
| 09/07/1994 | EP0614236A2 Method for producing hydrogen storage alloy |
| 09/06/1994 | US5344625 Lignin or tannin derivatives |
| 07/21/1994 | WO1994016111A1 Process for manufacturing corrosion resistant metal products |
| 07/20/1994 | CN1025505C Metal refining method |
| 07/19/1994 | US5330556 Method for treating gas and particulate solids in a fluid bed |
| 07/12/1994 | US5328501 Reduction of metal compounds to form metals |
| 07/06/1994 | EP0436718B1 Method of charging ore in melt-reduction |
| 07/06/1994 | CN2170952Y Cross pot type reducing furnace for magnesium smelting by hot reducing method |
| 07/05/1994 | US5325603 Solids feed system and method for feeding fluidized beds |
| 06/28/1994 | US5324341 Method for chemically reducing metals in waste compositions |
| 06/22/1994 | EP0328677B1 PROCESS FOR MELT REDUCTION OF Cr STARTING MATERIAL AND MELT REDUCTION FURNACE |
| 06/21/1994 | US5322547 Method for indirect chemical reduction of metals in waste |
| 06/21/1994 | CA1330259C Method for cooling gases and/or vapours from non-ferrous metal treatment plants, and the relative apparatus |
| 06/15/1994 | CN1025052C Process for prepn. of rare-earth silicon iron alloy by carbon thermal reducing bastnaesite |
| 06/09/1994 | WO1994012674A1 Process for obtaining metals, and compounds and alloys thereof, from ores |
| 06/08/1994 | CN1087684A Method for smelting duriron with raw coal |
| 06/01/1994 | EP0599760A1 Installation for iron ore reduction in a bed of solid particles fluidized by a reducing gas |
| 05/31/1994 | US5316565 Less CO2 emitted during the reduction of metal oxides, reacting carbon monoxide with hydrogen to produce carbon and water |
| 05/24/1994 | US5314526 With calcium chloride |
| 05/24/1994 | US5314171 Apparatus for the extraction of metals from metal-containing raw materials |
| 05/18/1994 | EP0594622A4 Solids feed system and method for feeding fluidized beds |
| 05/11/1994 | EP0596107A1 Fluidized bed preliminary reducing furnace for raw material comprising oxide |
| 05/04/1994 | EP0594622A1 Solids feed system and method for feeding fluidized beds. |
| 04/28/1994 | WO1994009166A1 Method and apparatus for treatment of sulphidic concentrates |
| 04/14/1994 | WO1994008057A1 Method for the enhanced recovery of zinc oxide |
| 04/07/1994 | DE4233140A1 Reducing iron@-contg. material - using reducing gas under pressure in several fluidised bed reactors |
| 04/06/1994 | CN1084898A Treatment of titaniferous materials |
| 03/31/1994 | DE4232285A1 Working-up material contg. iron oxide and/or non-ferrous heavy metal cpds. - using pulsed reducing flame fed directly into furnace |
| 03/17/1994 | WO1994005818A1 Process and system for recovering zinc and other metal vapors from a gaseous stream |
| 03/01/1994 | US5290015 Method of producing high-melting-point and high-toughness metal and apparatus for the same |
| 03/01/1994 | CA1327275C Method for continuous reduction in pyrometallurgical processes with pellets |
| 03/01/1994 | CA1327274C Method of recovering metals and metal alloys and a plant therefor |
| 03/01/1994 | CA1327272C Method for producing a metal from its halide |
| 02/23/1994 | EP0583670A1 Metallothermic reaction mixture |
| 02/23/1994 | EP0583429A1 Highly reactive form of copper and reagents thereof |
| 02/17/1994 | WO1994003647A1 Treatment of titaniferous materials |
| 02/16/1994 | CN1082098A Briquet replacing coke for smelting |
| 02/09/1994 | EP0365680B1 A method for producing a reduced chromium-ore bearing powder |
| 02/01/1994 | US5282883 Method and apparatus for the high-temperature treatment of fine-grained solids in a melting cyclone |
| 02/01/1994 | US5282881 Smelting of metallurgical waste materials containing iron compounds and toxic elements |
| 01/25/1994 | US5281252 Providing molten bath of sulfide material, injecting particles of sulfide below surface, bottom stirring, top blowing with oxygen containing gas to form metal and sulfur containing gas |
| 01/18/1994 | US5279803 Precious metal recovery process from carbonaceous ores |
| 01/18/1994 | US5279802 Oxidation of metal sulfide at alkaline pH; complexing |
| 01/05/1994 | CN1080325A Method for producing easily volatile metals, such as zinc, lead and cadmium, of sulphidic raw materials |
| 12/28/1993 | CA1325519C Method for preparing ferrocarbon intermediate product for use in steel manufacture and furnace for realization thereof |
| 12/09/1993 | WO1993024263A1 Highly reactive zerovalent metals from metalcyanides adapted for preparation of organometallic compounds |
| 12/09/1993 | WO1993024251A1 A method of disposing of medical sharps |
| 12/02/1993 | CA2084053A1 Method of disposing of medical sharps |
| 12/01/1993 | EP0474704A4 Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases |
| 11/24/1993 | EP0571358A1 Process for the direct reduction of particulate material containing iron oxide |
| 11/24/1993 | EP0570942A1 Method for producing easily volatile metals, such as zinc, lead and cadmium, of sulfidic raw materials |
| 11/18/1993 | EP0516763A4 Deoxidation of a refractory metal |
| 11/17/1993 | CN1078499A A smelting reduction method with high productivity |
| 11/16/1993 | US5261943 Method and apparatus for the extraction of metals from metal-containing raw materials |
| 11/16/1993 | CA1324265C Method of recovering metals and metal alloys and a plant therefor |
| 11/11/1993 | WO1993022001A1 Method for indirect chemical reduction of metals in waste |
| 11/11/1993 | CA2135082A1 Method for indirect chemical reduction of metals in waste |
| 11/02/1993 | US5258055 Condensation of metals such as zinc |
| 10/28/1993 | WO1993020898A1 High temperature process and plant for treatment and resources recovery of hazardous waste |
| 10/27/1993 | CN1022573C Prereduction furnace of smelting reduction facility of iron ore |
| 10/19/1993 | CA1323199C Process and means for the fabrication on zirconium metal by zirconium titrachloride |
| 10/13/1993 | CN1022445C Rare earth alloy |
| 10/06/1993 | EP0563559A2 A smelting reduction method with higher productivity |
| 09/22/1993 | CN1022192C Method for smelting ferrosilicon |
| 09/21/1993 | US5246484 Injection of a reducing agent and oxygen to improve gasification |
| 09/16/1993 | DE4207535A1 Addn. of paper residue from paper manufacturing into metal producing process - as redn. agent in the pyro-metallurgical mfr. of metal, to reduce cost of coke and wood |
| 09/14/1993 | US5244488 Direct smelting process with a thermal plasma |
| 09/08/1993 | EP0422004B1 Method and apparatus for reduction of material containing metal oxide |
| 09/01/1993 | EP0557312A1 Direct sulphidization fuming of zinc. |
| 08/24/1993 | US5238646 Adding pellet of rare earth metal oxide and magnesium powder to bath of molten light metal |
| 08/19/1993 | DE4204173A1 Producing single phase incongruently melting intermetallic alloys |
| 08/11/1993 | CN1075201A Circulating fluidized bed furnace for pre-reduction of fine iron ore |
| 08/05/1993 | WO1993015232A1 Method for reducing material containing metal oxide in solid phase |
| 08/05/1993 | CA2128605A1 Method for reducing material containing metal oxide in solid phase |
| 08/04/1993 | CN1074948A Process and plant for the reduction of hexavalent chromium contained in the residue resulting from the processing of chromium minerals |
| 07/22/1993 | WO1993014232A1 Process and plant for the reduction of hexavalent chromium contained in the residue resulting from the processing of chromium minerals |
| 07/22/1993 | WO1993014030A1 Method for the recovery of zinc oxide |
| 07/20/1993 | US5229064 Having at least two raw material supply ports and two reductive gas supply ports; improved mixing and dispersion |
| 07/14/1993 | EP0517786A4 Production of synthetic rutile |