| Patents for C22B 7 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof (11,341) |
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| 09/09/1992 | EP0502339A1 Method for recovering metal contents of metallurgic waste precipitates or waste dusts by suspension smelting |
| 09/09/1992 | CN1064317A Disaggregation recovering method for treating chromium slag |
| 09/08/1992 | CA1307118C Method and apparatus for treating solid residues containing heavy metals from combustion plants |
| 09/03/1992 | WO1992014850A1 Process and device for removing metal from flue dust |
| 09/02/1992 | EP0500837A1 Process for recovering metals and coatings from composite materials |
| 09/01/1992 | US5143357 Melting metal particles and dispersing gas with vaned impeller |
| 08/26/1992 | EP0499779A1 Method for treatment of waste materials |
| 08/25/1992 | US5141753 Method for utilizing the copper-arsenic precipitate created in the electroytic refining of copper in the production of anti-rot agents for wood |
| 08/25/1992 | CA1306612C Process for treatment of flyash |
| 08/20/1992 | DE4105058A1 Verfahren zum abtrennen von metall aus flugstaub A method of separated metals from fly dust |
| 08/19/1992 | CN1017920B Method of and apparatus for melting metal waste |
| 08/18/1992 | US5139567 Process for recovering valuable metals from a dust containing zinc |
| 08/18/1992 | US5139203 Method and device for recovery of scrap goods |
| 08/12/1992 | EP0497759A1 Process for the recovery of catalyst values. |
| 08/12/1992 | CN1063508A Detoxication and comprehensive utilization of waste residue and gangue containing chromium titanium nickel and vanadium |
| 08/05/1992 | CN1063314A Reduction, distillation and recovery method of cadmium and its installation |
| 08/05/1992 | CN1063232A Counter-current circulation sectional soaking extracted separation method of chromium dross comprehensive utilization |
| 08/04/1992 | US5135202 Apparatus for melting down chips |
| 07/29/1992 | CN1017629B Process for continuously melting scrap as well as apparatus for performing this process |
| 07/28/1992 | US5133843 Platinum Group Metals, Aqua Regia |
| 07/23/1992 | DE4101584A1 Mfr. of briquettes from rolling mill scale - for reuse in steel-making processes |
| 07/15/1992 | EP0333796B1 Process and device for processing hydroxide sludges |
| 07/12/1992 | WO1992012268A1 Recovery of aluminium and fluoride values from spent pot lining |
| 07/12/1992 | CA2097809A1 Recovery of aluminium and fluoride values from spent pot lining |
| 07/07/1992 | US5127941 Melting, casting |
| 07/01/1992 | CN1017216B Recovery of noble metals |
| 06/23/1992 | CA1303862C Method for working-up waste products containing valuable metals |
| 06/23/1992 | CA1303859C Process for recovery of silver from spent, waste, acidic processing fluids |
| 06/17/1992 | EP0489808A1 Dry cold process for making foundry dusts into briquettes. |
| 06/17/1992 | CN1017084B Closed vat type furnace for melting aluminium |
| 06/16/1992 | US5122181 Process and apparatus for melting contaminated metalliferrous scrap material |
| 06/11/1992 | WO1992009708A1 Slag processing in a rotary arc furnace |
| 06/10/1992 | EP0489591A1 Method for treatment of zinc-containing by-products and waste materials |
| 06/10/1992 | EP0489083A1 Smelting of metallurgical waste materials containing iron compounds and toxic elements. |
| 06/09/1992 | US5120616 Embedding cel in wax-like material, opening cell, removing sodium, then removing reaction product |
| 06/09/1992 | US5120409 Anodic dissolving, electrolytic separation |
| 06/09/1992 | US5120354 Method of disposing of fiber reinforced aluminum alloy composite |
| 06/07/1992 | CA2055668A1 Method for treatment of zinc-containing by-products and waste materials |
| 06/03/1992 | EP0487770A1 Smelting furnace for the heat treatment of waste comprising heavy metals and/or dioxine |
| 06/02/1992 | US5118344 From silver halide emulsion |
| 05/29/1992 | WO1992008815A1 Direct sulphidization fuming of zinc |
| 05/29/1992 | CA2095436A1 Direct sulphidization fuming of zinc |
| 05/27/1992 | EP0487379A2 Method of anti-pollution treatment of a used refining catalyst and complete recuperation of the different metal constituents of this catalyst |
| 05/27/1992 | EP0487368A2 Antipolluting treatment of a used refining catalyst and recuperation of metals |
| 05/27/1992 | EP0486759A1 Process and device for subsequent treatment and purification of waste gas originating from a secondary aluminium foundry |
| 05/26/1992 | CA1301463C Process and apparatus for introducing metal chips into a molten bath thereof |
| 05/22/1992 | WO1992009370A1 Process and plant for recovering equipment scrap |
| 05/20/1992 | CN1016707B Dissolution and purification of crude rhodium and high rhodium-containing alloy waste |
| 05/19/1992 | US5114474 Arrangement and method for introducing waste material into a molten slag |
| 05/19/1992 | CA1300893C Fluidised bed process |
| 05/17/1992 | CA2055186A1 Melting metal particles and dispersing gas with vaned impeller |
| 05/14/1992 | WO1992007964A1 A method of recirculating fine waste products |
| 05/13/1992 | CA2055280A1 Process for antipollution treatment of a spent refining catalyst and total recovery of different metal constituents of said catalyst |
| 05/05/1992 | US5110353 Process for the recovery and separation of arsenic from antimony |
| 05/01/1992 | CA2054510A1 Process for antipollution treatment of a spent refining catalyst and recovery of metals |
| 04/29/1992 | EP0483017A1 Method for recovering zinc and mercury from used zinc cells or batteries |
| 04/29/1992 | EP0482980A1 Method for recovering platinum group metals, deposited as thin films ou ceramic substrates, from used catalysts |
| 04/29/1992 | EP0482335A1 Method for treating fly ash |
| 04/28/1992 | US5108721 Leaching in dilute sulfuric acid to solubilize nickel, leaching again to solubilize copper and tellurium |
| 04/28/1992 | US5108497 From melt; treating with soda ash; water leaching |
| 04/28/1992 | US5108496 Method for the concentration of dusts in a cupola furnace with metal particles |
| 04/28/1992 | CA1299372C Process of making binderless briquets from steelworks dusts |
| 04/23/1992 | CA2053443A1 Process for the treatment of flue particulates |
| 04/22/1992 | EP0481956A1 Process and arrangement for the production of liquid steel from scrap |
| 04/22/1992 | CN1016359B Alloy substituting bismuth for inoculated cast iron |
| 04/21/1992 | US5106467 Alkaline leaching of galvanized steel scrap |
| 04/21/1992 | CA1298976C Recovery of noble metals |
| 04/08/1992 | EP0479326A1 Alkaline leaching of galvanized steel scrap |
| 04/02/1992 | WO1992005215A1 Process for recovering metals and coatings from composite materials |
| 04/01/1992 | EP0478103A1 Slag crushing device |
| 04/01/1992 | EP0477450A1 Method for recovery of tungsten from spent catalysts |
| 04/01/1992 | CN1059938A Wet preparing silver nitrate with anode mad of electrolytic lead |
| 03/31/1992 | US5100464 Steel mill by-product material briquettes and pellets |
| 03/25/1992 | CN1059762A Technology of v2o5 production by chloric acid chlorination method |
| 03/24/1992 | US5098069 Equipment and regulating means for recovering metal-carbide scrap by alloying |
| 03/18/1992 | EP0475128A1 Process for the reduction of pollutants in the exhaust gases of a burner fired smelt-oven |
| 03/18/1992 | EP0474956A1 Metallic vapor condenser capable of circulating a liquid metal |
| 03/17/1992 | CA1297502C Process for chemical stabilization of heavy metal bearing dusts and sludges, such as eaf dust |
| 03/17/1992 | CA1297301C Method for treatment of dust recovered from off gases in metallurgical processes |
| 03/17/1992 | CA1297300C Method for treatment of dust recovered from offgasses in metallurgical processes |
| 03/14/1992 | CA2050767A1 Process for the recovery of metals and coating materials from composite materials |
| 03/11/1992 | CN1059370A Chromium slag detoxication and smelting method of pig iron containing chrome |
| 03/03/1992 | US5093103 Process for separating off poisonous volatile chemical compounds from a mixture of solid particles having a particle size of up to 200 microns |
| 02/27/1992 | DE4105224C1 Recovery of precious metal(s) from catalyst - comprises coating ceramic oxide on metal foil which is detachable |
| 02/26/1992 | EP0471816A1 Process for recovering heavy metals from spent catalysts |
| 02/26/1992 | EP0471715A1 Process for two-phase extraction of metallic ions from phases containing solid metallic oxides, agent and use. |
| 02/26/1992 | CN1058993A Silver extraction from tin anode mud containing low silver content |
| 02/25/1992 | US5091350 Extracting with aqueous solution of organic phosphine sulfonate or carboxylate and solubilizer |
| 02/25/1992 | US5090999 Process for the removal of non-ferrous metals from solid ferrous scrap |
| 02/20/1992 | WO1992002648A1 Method of extracting valuable metals from leach residues |
| 02/19/1992 | CN1058810A Method of nickel retrieved from waste catalyst by pyrogenic process |
| 02/19/1992 | CN1058809A Method of extracting zinc from zinc scruff |
| 02/18/1992 | US5089242 Method for selectively separating a non-ferrous metal |
| 02/06/1992 | WO1992001825A1 Decontamination and/or surface treatment of metals |
| 02/05/1992 | EP0470066A2 Process for melting steel from scrap and/or metal-containing waste material |
| 02/05/1992 | CN1058383A Method for production of active manganese dioxide with waste manganese-containing dregs from pharmaceutical industry |
| 01/30/1992 | DE4124547A1 Selective extn. of titanium as tetra:chloride |
| 01/29/1992 | CN1058232A Method for extracting neodymium from neodymium-iron-boron waste material |
| 01/28/1992 | US5084092 Method of separating metals from catalyst material |
| 01/28/1992 | US5084080 Device for trapping gaseous compounds of refractory metals and pumping plant including same |