| Patents for C22B 15 - Obtaining copper (5,364) |
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| 08/07/1979 | CA1059769A1 Extraction of metal values from leached slurries |
| 08/07/1979 | CA1059768A1 Copper-nickel separation process |
| 07/31/1979 | US4162916 Process for the treatment of complex metal ores containing, in particular, manganese and copper, such as oceanic nodules |
| 07/31/1979 | US4162915 Process for treating lead-copper-sulphur charges |
| 07/03/1979 | CA1057511A1 Method for selectively dissolving non-ferrous metals contained in pyritic ores |
| 06/26/1979 | US4159232 Electro-hydrometallurgical process for the extraction of base metals and iron |
| 06/26/1979 | CA1057063A1 Recovery of base metals from manganese-containing ores |
| 06/26/1979 | CA1057061A1 Process for producing raw copper continuously in one stage from unrefined sulfidic copper concentrate or ore |
| 06/26/1979 | CA1057060A1 Operating method for slag cleaning furnace in copper refining |
| 06/26/1979 | CA1057029A1 Method and apparatus for purifying blister furnace effluent |
| 06/19/1979 | CA1056855A1 5-heptyl-2-hydroxy benzaldoximes |
| 06/19/1979 | CA1056603A1 Fuel supply control to the reaction shaft in the operation of a flash smelter |
| 06/12/1979 | US4157912 Process for recovery of copper and zinc from complex sulphides |
| 05/22/1979 | CA1054778A1 Hydrometallurgical processing of metal sulfides |
| 05/08/1979 | US4153669 Removal of metals from waste materials that contain bimetallic salt complexes |
| 05/08/1979 | US4153522 Sulfate precipitation during oxidative ammonium leach of Cu, Ni, Zn sulfide ores |
| 05/08/1979 | US4153452 Recovery of metals from bimetallic salt complexes |
| 05/08/1979 | US4153450 Flow and composition of reducing gas |
| 05/08/1979 | CA1053914A1 Metal recovery from sulfate solutions |
| 05/08/1979 | CA1053913A1 Leaching a copper-nickel concentrates |
| 05/01/1979 | US4152143 Method and apparatus for precipitating metal cement |
| 05/01/1979 | US4152142 Recovery of copper values from iron-containing ore materials as mined and smelted |
| 05/01/1979 | CA1053471A1 Selective reduction of oxidized ore |
| 04/24/1979 | US4150976 Method for the recovery of metallic copper |
| 04/24/1979 | CA1053377A1 Semiconductor device |
| 04/24/1979 | CA1053008A1 Method of operating converter furnace for treating matte |
| 04/17/1979 | US4149945 Electrowinning cementation |
| 04/17/1979 | US4149880 Smelter flue dusts and refinery wastes; leaching with sulfuric acid, solubilizing, precipitating toxins, cementation on iron |
| 04/17/1979 | CA1052584A1 Method of extraction of nickel and copper from the nodules of deep-sea beds |
| 04/10/1979 | US4148630 Direct production of copper metal |
| 04/03/1979 | CA1051671A1 Process for treating manganese nodules |
| 03/27/1979 | CA1051205A1 Method of spray smelting copper |
| 03/20/1979 | CA1050767A1 Treatment of chalcopyrite |
| 03/13/1979 | US4144310 High slurry density sulfidic mineral leaching using nitrogen dioxide |
| 03/13/1979 | US4144055 Autogenous smelting of sulfidic raw material |
| 03/13/1979 | US4143865 Flash smelting furnace |
| 03/13/1979 | CA1050279A1 Solvent extraction of copper |
| 03/08/1979 | WO1979000104A1 A method of producing blister copper from copper raw material containing antimony |
| 02/13/1979 | CA1048278A1 Metal carbonate recycle to reduction circuit in the cuprion process |
| 02/06/1979 | US4138248 Recovery of elemental sulfur and metal values from tailings from copper recovery processes |
| 01/30/1979 | US4137291 Extraction of metal values from manganese nodules |
| 01/30/1979 | CA1047258A1 Process for recovering copper from basic salt mixtures |
| 01/23/1979 | US4135918 Roast-reductive leach process for copper recovery |
| 01/16/1979 | CA1046289A1 Hydrometallurgical treatment of nickel and copper bearing intermediates |
| 01/16/1979 | CA1046287A1 Atmospheric leaching of matte containing iron |
| 01/02/1979 | US4132758 Copper leaching employing nitrogen dioxide as oxidant |
| 12/05/1978 | CA1043594A1 Production of copper by gaseous reduction |
| 12/05/1978 | CA1043576A1 Two stage leaching of limonitic ore and sea nodules |
| 11/28/1978 | US4127408 Method for the continuous refinement of contaminated copper in the molten phase |
| 11/14/1978 | CA1042207A1 Metallurgical lance |
| 11/07/1978 | US4124462 Solvent extraction |
| 11/07/1978 | US4124379 Contacting with amalgam of group 2b, 4,5, or 8 metal |
| 10/31/1978 | US4123260 Chelating ion exchange resin having aminocarboxylic acid functional groups |
| 10/31/1978 | CA1041304A1 Process for recovering valuable metals from sulfate solutions |
| 10/24/1978 | CA1041037A1 Process for the manufacture of electrolytic copper |
| 10/24/1978 | CA1040868A1 Process for recovery of valuable metals from solution using neutralization by lime or limestone |
| 10/24/1978 | CA1040864A1 Method for controlling the flux feed rate in the operation of a flash smelting furnace |
| 10/24/1978 | CA1040837A1 Process for the recovery of group 1-b metal halides from bimetallic salt complexes |
| 10/17/1978 | US4120935 Dump leaching of copper |
| 10/17/1978 | US4120769 Aqueous ore leach solutions, recovering metal values; ion exchanging |
| 10/17/1978 | US4120697 Segregation-separation of copper from nickel in copper-nickel sulfide concentrates |
| 10/17/1978 | CA1040435A1 Method for controlling the matte composition in the operation of a flash smelting furnace |
| 10/10/1978 | US4119699 Method for wet metallurgical processes |
| 10/10/1978 | US4119303 Method and device for precipitating copper cement from a copper solution mixed with iron |
| 10/03/1978 | US4118221 Precipitation with 1a or 2a carbonates or hydroxides, reduction through cuprous sulfite, thermal dissociation |
| 09/26/1978 | CA1039065A1 Copper cementation |
| 09/19/1978 | US4115221 Acid ferric sulfate leaching of copper sulfide concentrates |
| 09/19/1978 | US4115108 Matte smelting |
| 09/19/1978 | CA1038736A1 Copper and copper alloy etching solutions and process |
| 09/12/1978 | US4113848 By reduction of cupric salts or oxidation of copper or copper sulfide |
| 09/12/1978 | US4113470 Process for suspension smelting of finely-divided sulfidic and/or oxidic ores or concentrates |
| 08/29/1978 | CA1037261A1 Oxidation-leaching of chalcopyrite |
| 08/22/1978 | US4108639 Process for recovering platinum group metals from ores also containing nickel, copper and iron |
| 08/22/1978 | US4108638 Process for separating nickel, cobalt and copper |
| 08/22/1978 | CA1036829A1 Two stage sulfuric acid leaching of sea nodules |
| 08/22/1978 | CA1036828A1 Process for the treatment of sulphides of copper |
| 08/15/1978 | US4107262 Cuprion process start-up control |
| 08/15/1978 | US4107009 Recovery of copper from ores and concentrates |
| 08/08/1978 | US4105743 Selectively extracting copper, zinc, nickel from a mixture of metal hydroxides |
| 08/01/1978 | US4104055 Recovering metallic values |
| 07/25/1978 | US4102976 Leaching with acid, adding arsenic and/or phosphorus |
| 07/18/1978 | US4101315 Recovery of silver from cuprous chloride solutions by co-crystallization with sodium chloride |
| 07/11/1978 | US4100043 Atmospheric leach ion-exchange process for treating iron-containing nickel-copper matte |
| 07/11/1978 | US4099962 Method and apparatus for measuring and controlling the percentage reduction of ore in a moving bed gaseous reduction reactor |
| 06/27/1978 | US4097271 Leaching, precipitating cuprous chloride with butadiene, decomposing, oxidizing, hydrolyzing to get cupric oxychloride |
| 06/20/1978 | US4096053 Slurry electrowinning apparatus |
| 06/13/1978 | US4094754 Nickel, copper, iron, sulfur |
| 06/06/1978 | US4093526 Hydrometallurgical leaching and refining of nickel-copper concentrates, and electrowinning of copper |
| 05/23/1978 | US4091070 Dump leaching, aging copper ore with sulfuric acid solution, washing |
| 05/23/1978 | US4090870 Continuous smelting and refining of cement copper |
| 05/09/1978 | US4088310 Apparatus for suspension smelting of finely-grained oxide and/or sulfide ores and concentrates |
| 04/25/1978 | US4086163 Liquid membrane emulsion |
| 04/25/1978 | US4086082 Copper crystal and process |
| 04/25/1978 | US4085923 Furnaces |
| 04/18/1978 | US4084961 Treatment of metal bearing mineral material |
| 04/04/1978 | US4082542 Copper precipitate agglomerization process |
| 03/28/1978 | US4081506 Drying, grinding, roasting with sulfur, leaching |
| 03/21/1978 | US4080419 Recovering copper values using ammonium carbonate or sulfuric acid leaching agent and a surfactant |
| 02/28/1978 | US4076605 Dichromate leach of copper anode slimes |
| 02/14/1978 | US4073646 Reducing and oxidizing |