| Patents for C22B 15 - Obtaining copper (5,364) |
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| 04/29/1986 | US4585548 Grinding mineral with lyophilic surface, slurrying with carbon source and hydrocarbon liquid and separation |
| 04/29/1986 | US4585477 Method for separating and recovering nickel and copper from complex materials |
| 04/15/1986 | CA1203083A1 Process for the recovery of non-ferrous metals from sulphide ores and concentrates |
| 04/09/1986 | EP0177471A1 A method for recovering the valuable metal content of contaminated copper raw material |
| 04/09/1986 | EP0177090A2 Device for the production of inflammable solid/gas suspensions |
| 04/08/1986 | CA1203029A1 Treatment of solutions to facilitate the removal of ferric iron therefrom |
| 04/02/1986 | EP0175824A1 Production of fine spherical copper powder |
| 04/01/1986 | CA1202491A1 Metal sulphide extraction |
| 03/26/1986 | EP0175556A2 Process for the pressure oxidation leaching of non-ferrous metal containing sulphidic material |
| 03/25/1986 | US4578254 Process for the refining of sulfidic concentrates which contain arsenic, antimony and bismuth |
| 03/25/1986 | US4578162 Method for dissolving copper in the presence of iron |
| 03/25/1986 | CA1202185A1 Method and apparatus for converting matte, particularly high-grade matte |
| 03/25/1986 | CA1202184A1 Dead roast-oxide flash reduction process for copper concentrates |
| 02/25/1986 | US4572822 Leaching with sulfuric acid in sulfur dioxide atmosphere |
| 02/25/1986 | US4572737 Agents for the removal of impurities from a molten metal and a process for producing same |
| 02/19/1986 | EP0171845A1 Process and apparatus for the continuous pyrometallurgical treatment of a copper-lead matte |
| 02/18/1986 | US4571262 Leaching, separation of solids, pressurized leacching, electrowinning of copper, and separation |
| 02/18/1986 | CA1200702A1 Method of recovering metals from liquid slag |
| 02/05/1986 | EP0170600A1 Chloridizing ladle for aluminium alloys to remove magnesium |
| 02/05/1986 | EP0170407A1 Agents for the removal of impurities from a molten metal and a process for producing same |
| 02/04/1986 | US4568525 Method for the selective dissolution of lead from mixed minerals containing zinc |
| 02/04/1986 | CA1200074A1 Process for production of metal calcines of low sulfur content |
| 01/28/1986 | US4566903 Method for the pyrometallurgical treatment of fine grained solids to produce molten products |
| 01/14/1986 | CA1199299A1 Hydrogenation of carbonaceous material |
| 01/03/1986 | WO1986000031A1 A method and apparatus for separating metal particles |
| 01/02/1986 | EP0166710A1 Process for leaching sulfides containing zinc and iron |
| 12/31/1985 | US4561887 Process for recovering metals from solution through solvent extraction and pyrometallurgical reduction |
| 12/31/1985 | US4561886 Method of heating, melting and coal conversion and apparatus for the same |
| 12/31/1985 | US4561884 Treating molten arsenide-antimonide matte with sulfur vapors and separation |
| 12/31/1985 | CA1198593A1 Method and apparatus for forming a directional and controlled suspension spray of a pulverous material and a reaction gas |
| 12/24/1985 | US4560453 Efficient, safe method for decoppering copper refinery electrolyte |
| 12/18/1985 | EP0165166A1 Process for treating complex manganese ores such as marine nodules |
| 12/17/1985 | US4559237 Process for the deposition of metals on semiconductor powders |
| 12/17/1985 | CA1198079A1 Refining copper-bearing material contaminated with nickel, antimony and/or tin |
| 12/11/1985 | EP0163876A1 Process for depositing metals on semiconducting powders |
| 11/12/1985 | US4552632 Hydrometallurgical method of extraction of copper from sulphide-containing material |
| 10/30/1985 | EP0159349A1 Processes for treating waste streams |
| 10/15/1985 | CA1195125A1 Solid-matte oxygen converting process |
| 10/08/1985 | US4545972 Process for recovery of metal chloride and cuprous chloride complex salts |
| 10/08/1985 | US4545816 Processes relating to the extraction of metals from laterites and ocean manganese nodules |
| 10/02/1985 | EP0156157A1 Additive for metallurgic liquids being effective to improve the characteristics of metal or metal alloy articles of manufacture |
| 10/01/1985 | US4544541 Removal of hexavalent selenium from nickel, cobalt or copper sulfate solution |
| 10/01/1985 | US4544460 Removal of potassium chloride as a complex salt in the hydrometallurgical production of copper |
| 10/01/1985 | US4544141 Process and apparatus for continuous converting of copper and non-ferrous mattes |
| 09/26/1985 | WO1985004190A1 Circumferential sealing assembly |
| 09/17/1985 | CA1193448A1 Hydrometallurgical process for the recovery of valuable metals from sulfidic, silicate-containing raw materials |
| 09/17/1985 | CA1193445A1 Elution of copper from ion exchange resins |
| 09/12/1985 | WO1985003952A1 Method for separation and leaching of the valuable metals in metal sulphide materials |
| 09/10/1985 | CA1193265A1 Process for the extraction of metal values using substituted pyridine extractants |
| 09/10/1985 | CA1193106A1 Distillation process for separating silver and copper chlorides |
| 08/27/1985 | US4537627 Silicon carbide particles |
| 08/27/1985 | CA1192411A1 Copper refining plant |
| 08/13/1985 | US4534571 Circumferential sealing assembly |
| 08/06/1985 | US4533388 Technique for removing iron-rich components from a copper melt |
| 07/30/1985 | EP0137776A4 Method of maintaining and testing for proper concentrations of thiourea in copper refining electrolysis cells. |
| 07/23/1985 | CA1190751A1 Process and apparatus for continuous converting of copper and non-ferrous mattes |
| 07/09/1985 | US4528167 Selective solvent extraction using organophosphorus and carboxylic acids and a non-chelating aldehyde oxime |
| 07/09/1985 | US4528033 Method for producing blister copper |
| 07/09/1985 | CA1190048A1 Selective solvent extraction using organophosphorus and carboxylic acids |
| 06/25/1985 | US4525330 Process for the extraction of metal values and novel metal extractants |
| 06/25/1985 | CA1189291A1 Method of recovering hydrogen-reduced metals, ions and the like at porous catalytic barriers and apparatus therefor |
| 06/19/1985 | EP0047742B1 A process for recovering non-ferrous metal values from ores, concentrates, oxidic roasting products or slags |
| 06/04/1985 | US4521245 Flash smelting with basic silicate fluxes |
| 05/28/1985 | US4519588 Molten copper oxygenation apparatus |
| 05/23/1985 | WO1985002204A1 Treatment of dross |
| 05/15/1985 | EP0141515A1 Catalyst |
| 05/07/1985 | US4515696 Separation of residue after neutralization before precipitation |
| 05/07/1985 | US4515631 Method for producing blister copper |
| 04/25/1985 | WO1985001748A1 Chlorine leaching of copper sulphide concentrates in an autoclave |
| 04/25/1985 | WO1985001670A1 Processes for treating waste streams |
| 04/24/1985 | EP0138794A1 A method for recovering metal values from materials containing copper and/or precious metals |
| 04/24/1985 | EP0138100A2 Process for manufacturing active carbon-rich masses or bodies |
| 04/24/1985 | EP0137776A1 Method of maintaining and testing for proper concentrations of thiourea in copper refining electrolysis cells. |
| 04/03/1985 | EP0135950A1 Process for winning copper and optionally silver and gold by leaching oxidic and sulphurized materials using cyanides soluble in water |
| 03/12/1985 | US4504309 Process and apparatus for continuous converting of copper and non-ferrous mattes |
| 03/12/1985 | CA1183689A1 Method for separating and recovering nickel and copper from complex materials |
| 02/19/1985 | US4500396 Copper recovery process |
| 02/05/1985 | CA1181954A1 Method for decreasing metal losses in nonferrous smelting operations |
| 01/15/1985 | CA1180902A1 Process for recovering metals |
| 01/02/1985 | CA1180194A Process of blowing high-oxygen gases into a molten bath which contains non-ferrous metals |
| 12/25/1984 | US4490170 Method for forming a directional and controlled suspension spray of a pulverous material and a reaction gas |
| 12/19/1984 | EP0128887A1 A method for processing copper smelting materials and the like containing high percentages of arsenic and/or antimony |
| 12/18/1984 | US4488950 Heavy metal separation from copper-bearing wastes |
| 12/18/1984 | CA1179509A1 Iron-copper separation by reduction leaching |
| 12/11/1984 | US4487628 Selective reduction of heavy metals |
| 11/27/1984 | US4484730 Device for leaching copper from slags |
| 11/20/1984 | US4483827 Hydrometallurgical process for the recovery of valuable metals from sulfidic, silicate-containing raw materials |
| 11/20/1984 | CA1178051A1 Gas-blast pipe for feeding reaction agents into metallurgical melts |
| 11/13/1984 | CA1177653A1 Cuprous chloride production from chalcopyrite |
| 11/08/1984 | WO1984004259A1 Recovery of metal values from mineral ores by incorporation in coal-oil agglomerates |
| 10/23/1984 | US4478698 Roasting; solvent extraction; precipitation |
| 10/23/1984 | CA1176472A1 Method of leaching of metal sulphide-containing material |
| 10/23/1984 | CA1176471A1 Continuous melting and refining of secondary and/or blister copper |
| 10/16/1984 | CA1176062A1 Recovery of copper from arsenical drosses |
| 10/16/1984 | CA1176061A1 Process for separating metals from aqueous solutions |
| 10/09/1984 | US4475993 Extraction of trace metals from fly ash |
| 10/09/1984 | US4475947 Method for recovering heat from dust-bearing gases produced in smelting sulphide concentrates and means herefor |
| 10/09/1984 | CA1175664A1 Process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium |
| 10/02/1984 | US4474614 Crystallization |
| 10/02/1984 | CA1175240A1 Process for the recovery of metals from their ores |