| Patents for C22B 23 - Obtaining nickel or cobalt (3,818) |
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| 10/24/1978 | CA1040868A1 Process for recovery of valuable metals from solution using neutralization by lime or limestone |
| 10/24/1978 | CA1040866A1 Refining of chloride salts |
| 10/24/1978 | CA1040865A1 Refining of nickel mattes |
| 10/24/1978 | CA1040864A1 Method for controlling the flux feed rate in the operation of a flash smelting furnace |
| 10/17/1978 | US4120698 Oxidation, melting, chemical reduction |
| 10/17/1978 | CA1040435A1 Method for controlling the matte composition in the operation of a flash smelting furnace |
| 09/26/1978 | CA1039234A1 Process for the production of high-purity metals from nickeliferous mattes |
| 09/26/1978 | CA1039065A1 Copper cementation |
| 09/19/1978 | US4115108 Matte smelting |
| 08/29/1978 | US4110400 Selective precipitation of nickel and cobalt sulfides from acidic sulfate solution |
| 08/29/1978 | US4110106 Selective sulfation process for partitioning ferrous and non-ferrous values in an ore |
| 08/22/1978 | US4108640 Hydrometallurgical process for the production of cobalt powder from mixed metal sulphides |
| 08/22/1978 | US4108638 Process for separating nickel, cobalt and copper |
| 08/22/1978 | CA1036829A1 Two stage sulfuric acid leaching of sea nodules |
| 08/15/1978 | US4107262 Cuprion process start-up control |
| 08/08/1978 | US4105743 Selectively extracting copper, zinc, nickel from a mixture of metal hydroxides |
| 08/01/1978 | US4104359 Treating with salt of hydroxylamine |
| 07/11/1978 | US4100251 Method of recovering metals out of soot originating from the combustion of oil |
| 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 |
| 07/04/1978 | US4098870 Acid leaching of nickeliferous oxide ores with minimized scaling |
| 06/27/1978 | US4097575 Roast-neutralization-leach technique for the treatment of laterite ore |
| 06/27/1978 | US4097272 Winning nickel and cobalt with mercaptide extractants and carbon monoxide strip |
| 06/27/1978 | US4097268 Method of treating molten ferrous material with composite rods containing Ca |
| 06/13/1978 | US4094754 Nickel, copper, iron, sulfur |
| 06/06/1978 | US4093526 Hydrometallurgical leaching and refining of nickel-copper concentrates, and electrowinning of copper |
| 06/06/1978 | US4093450 Production of ultrafine cobalt powder from dilute solution |
| 05/16/1978 | US4089676 Hydrazine, alkali metal base, controlled geometry |
| 05/09/1978 | US4088310 Apparatus for suspension smelting of finely-grained oxide and/or sulfide ores and concentrates |
| 05/02/1978 | US4087510 Process for extracting metals from spent desulphurization catalysts |
| 04/25/1978 | US4085923 Furnaces |
| 04/11/1978 | US4083915 Reduction to divalent state, stripping with dilute acid |
| 03/07/1978 | CA1027373A1 Refining process for nickel bearing mattes |
| 02/14/1978 | US4073641 Selective reduction of nickel ore with a low nickel content |
| 01/24/1978 | US4070181 Method for reduction of finely divided metal oxide material |
| 01/17/1978 | US4069294 Hydrometallurgical recovery of metal values |
| 01/10/1978 | US4067952 Leaching of copper-nickel concentrates |
| 01/03/1978 | US4066733 Metal extraction from sea nodules |
| 01/03/1978 | CA1023690A1 Method for extracting metals through ion exchange and electrolysis |
| 12/27/1977 | US4065502 Certain β-diketones and the use thereof as metal extractants |
| 12/27/1977 | US4065105 Fluidizing means for reducing viscosity of slurries |
| 12/13/1977 | US4062924 Reductive leaching of limonitic ores with hydrogen sulfide |
| 12/13/1977 | US4062675 Ore treatment involving a halo-metallization process |
| 10/11/1977 | US4053553 Method for selective recovery of cadmium from cadmium-bearing waste |
| 09/20/1977 | US4049514 Electrowinning, leaching, forming copper arsenate |
| 09/20/1977 | US4049445 Method for thermal treatment of nickel ore |
| 09/20/1977 | US4049444 Thermal upgrading, recovering nickel by reducing with alkali or alkaline earth metal compound, liquid hydrocarbon |
| 09/20/1977 | US4049438 Non-ferrous metal recovery from deep sea nodules |
| 09/06/1977 | US4046851 Two stage sulfuric acid leaching of sea nodules |
| 09/06/1977 | US4046556 Direct gaseous reduction of oxidic metal ores with dual temperature cooling of the reduced product |
| 08/30/1977 | US4045215 Multistage desulfurization |
| 08/23/1977 | US4044096 Sulfuric acid leaching of nickeliferous laterite |
| 08/23/1977 | US4044094 Two-stage fluid bed reduction of manganese nodules |
| 08/23/1977 | US4043882 Selective solvent extraction process for copper from nickel |
| 08/16/1977 | US4042665 Cobalt ion exchange process |
| 07/26/1977 | US4038066 Method of stripping base metals from fused salts |
| 07/19/1977 | US4036636 Flash furnace process |
| 07/05/1977 | US4034059 Separation of cobalt from nickel by ozonation in the presence of ammonium salts |
| 06/21/1977 | US4030917 Hydrometallurgical processing of metal sulfides |
| 06/14/1977 | US4029733 Manganese |
| 06/14/1977 | US4029498 Process for treating manganese nodules |
| 05/31/1977 | US4026773 Extracting metal values from manganiferous ocean nodules |
| 04/26/1977 | US4020143 Use of raw manganese nodules for oxidation leaching of reductively roasted manganese nodules |
| 04/19/1977 | US4018865 A-hydroxyoximes, sulfonic acids |
| 04/19/1977 | US4018596 Carbonyl nickel powder |
| 04/05/1977 | US4016055 Containing copper, cobalt, iron and nickel; chlorination |
| 04/05/1977 | US4016054 Hydrometallurgical treatment process for extracting constituent metal values from ferro-nickel |
| 03/15/1977 | US4012484 Chromite recovery from chromite-bearing ore |
| 03/15/1977 | US4012482 Scrubbing of ammonia from oxime liquid ion exchange reagents |
| 02/15/1977 | US4008076 Hydrometallurgy |
| 02/01/1977 | US4006013 Process for fining carbonaceous alloys of iron, nickel and/or cobalt |
| 01/25/1977 | US4005173 Steam stripping of ammoniacal solutions and simultaneous loading of metal values by organic acids |
| 01/25/1977 | US4004990 Process for separating and recovering nickel and cobalt |
| 01/11/1977 | US4002719 Recovery of nickel and cobalt carbonates from ammoniacal leach solutions |
| 01/11/1977 | US4002717 Refining of manganese oxide ores |
| 01/11/1977 | US4002463 Upgrading the nickel content from low grade nickel lateritic iron ores |
| 12/21/1976 | US3998627 Process for recovering metals from metal ammine bearing ammonium salt solutions using ion exchange resin |
| 12/07/1976 | US3996045 Adding sulfur compound, calcining, smelting |
| 11/30/1976 | US3994716 Process for the production of finely divided cobalt powders |
| 11/16/1976 | US3992270 Iron, nitric acid lixiviation |
| 11/16/1976 | US3992193 Metal oxides, quenching |
| 11/09/1976 | US3991159 High temperature neutralization of laterite leach slurry |
| 11/09/1976 | US3990890 Process for refining molten copper matte with an enriched oxygen blow |
| 11/09/1976 | US3990889 Metallurgical process using oxygen |
| 10/26/1976 | US3988224 Method of extraction of metallic elements from submarine nodules |
| 10/26/1976 | US3988149 Metallurgical process using oxygen |
| 10/26/1976 | US3988148 Metallurgical process using oxygen |
| 10/19/1976 | US3986866 Method of recovery of metal compounds and metals from nitrate solutions |
| 10/12/1976 | US3985556 With carbon monoxide |
| 10/05/1976 | US3984237 Leaching of low-grade nickel complex ore |
| 10/05/1976 | US3984235 Treatment of converter slag |
| 09/21/1976 | US3981969 Pressurized column solvent extraction of nickel from ammoniacal solutions |
| 09/21/1976 | US3981968 Oxime or oxine compounds |
| 09/21/1976 | US3981962 Decomposition leach of sulfide ores with chlorine and oxygen |
| 08/24/1976 | US3976760 Continuously producing and recovering metallic chlorides |
| 08/24/1976 | US3976472 Method and an electrically heated device for producing molten metal from powders or lumps of metal oxides |
| 08/17/1976 | US3975497 Enhanced selectivity in the separation of nickel and cobalt from ammoniacal solutions |
| 07/20/1976 | US3970737 Metal, particularly gold, recovery from adsorbed cyanide complexes |
| 07/06/1976 | US3967958 Method of winning copper, nickel, and other metals |
| 06/08/1976 | US3962051 Ni, cu, s |