| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 03/01/1983 | CA1141967A1 Process for treating an organic phase containing iron chloride, molybdenum chloride and hc1 |
| 03/01/1983 | CA1141966A1 Process for separating trivalent iron from an aqueous chloride solution |
| 02/22/1983 | US4374809 Process for the separation of molybdenum values from tungsten values |
| 02/22/1983 | US4374808 Removal of selenium from acidic copper/nickel solutions |
| 02/22/1983 | US4374805 Reductants for reducing metals in acid media |
| 02/22/1983 | US4374780 Di-2,4,4'-trimethylpentylphosphinic acid and its preparation |
| 02/22/1983 | US4374713 Solvent extraction of tungten from electrolyte solution in separate container before electrowinning |
| 02/17/1983 | WO1983000509A1 Selective purification of arsenical material during an alkaline process for the treatment of a uranium-bearing and/or molybdenum-bearing mineral by means of a magnesium compound |
| 02/16/1983 | EP0071679A1 Production of aluminium and uranium products |
| 02/16/1983 | EP0061468A4 Recovery of silver from ores and concentrates. |
| 02/15/1983 | US4374096 Uranium ore processing |
| 02/08/1983 | US4373032 Metal salts of polyacetylenic compounds and uses thereof as ion exchange and thermochromic polymers |
| 02/08/1983 | US4372923 Quaternary ammonium chloride extractant |
| 02/08/1983 | US4372922 Process for the recovery of indium |
| 02/08/1983 | CA1140767A1 Hydrometallurgical recovery of metal values |
| 02/01/1983 | US4371393 Reduction |
| 01/26/1983 | EP0070415A1 Process for extracting heavy metals ions from aqueous solutions |
| 01/25/1983 | US4370237 Extractants |
| 01/19/1983 | EP0070226A1 Process for separating trivalent actinides from trivalent lanthanides in an acidic aqueous solution |
| 01/18/1983 | US4369166 Purification of solutions of gallium values by liquid/liquid extraction |
| 01/18/1983 | US4369165 Recovery of tungsten values from alkali tungstate solutions by solvent extraction |
| 01/18/1983 | US4369100 Metallurgy recovery |
| 01/18/1983 | CA1139569A1 Leaching gold - silver ores |
| 01/11/1983 | US4368073 Preferential precipitation |
| 01/11/1983 | CA1139466A1 Removal of arsenic from aqueous solutions |
| 01/11/1983 | CA1139084A1 Indium extraction process |
| 01/05/1983 | EP0068541A1 Process for the recovery of germanium from an aqueous solution |
| 01/05/1983 | EP0068540A1 Process for the recovery of germanium from an aqueous solution using an alpha-hydroxyoxime |
| 01/04/1983 | US4367215 Method of acid leaching of silicates |
| 01/04/1983 | CA1138650A1 Purification of nickel chloride solutions |
| 12/28/1982 | US4366128 Removal of arsenic from aqueous solutions |
| 12/28/1982 | CA1138474A1 Process for the preparation of a 1,2-dioxime |
| 12/22/1982 | EP0067537A1 Process for the lowering of the oxidation state of metal salts |
| 12/21/1982 | US4364907 Solvent extraction with water-immiscible solvent and aqueous ammonia |
| 12/21/1982 | CA1137762A1 Hydrometallurgical recovery of metal values |
| 12/14/1982 | US4363788 Separation of uranium and molybdenum using a solvent |
| 12/14/1982 | CA1137457A1 Metallurgical extractant composition and process |
| 12/07/1982 | US4362702 Hydrometallurgical process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium |
| 12/07/1982 | US4362607 Recovery of copper and zinc from complex chloride solutions |
| 12/01/1982 | EP0021990B1 Process for treating mixtures of rare earth oxides and gallium oxides |
| 11/23/1982 | US4360503 Recovery of tungsten values from alkali tungstate solutions by solvent extraction |
| 11/23/1982 | US4360502 Recovery of tungsten values from alkali tungstate solutions by solvent extraction |
| 11/23/1982 | US4360500 Mineral leaching |
| 11/23/1982 | US4360234 In-situ method and apparatus for sparging gas bubbles |
| 11/09/1982 | US4358426 Method for cleaning solution used in nuclear fuel reprocessing |
| 11/09/1982 | US4358158 In situ leaching using aqueous carbonic acid; reverse flow |
| 11/09/1982 | US4358157 Using dilute aqueous carbonic acid for leaching with intermittent injection of an oxidant |
| 11/02/1982 | CA1134621A1 Hydrometallurgical recovery of metal values |
| 10/28/1982 | WO1982003620A1 Method for extracting arsenic from solutions containing alcaline carbonates, sulphate, optionally hydroxide, as well as at least one of vanadium, uranium and molybdenum metals |
| 10/27/1982 | EP0063137A1 Stabilization of substituted 8-hydroxyquinoline hydrometallurgical reagents |
| 10/19/1982 | US4355005 Process for the treatment of a raw material which contains oxide and ferrite of zinc, copper and cadmium |
| 10/19/1982 | US4354937 Process for precipitating heavy metals from wastewater |
| 10/19/1982 | US4354870 Precipitation, bubbling hydrogen sulfide |
| 10/12/1982 | US4353883 Selective extraction of cobalt(II) from aqueous solutions with phosphinic acid extractants |
| 10/12/1982 | CA1133229A1 Zinc dust purification of zinc sulphate solution |
| 10/12/1982 | CA1133228A1 Purification of zinc sulphate solution |
| 10/06/1982 | EP0061976A1 Purification of ammonium tungstate solutions |
| 10/06/1982 | EP0061468A1 Recovery of silver from ores and concentrates. |
| 10/05/1982 | US4352786 Treatment of copper refinery anode slime |
| 10/05/1982 | CA1132802A1 Process for recovering gallium |
| 09/29/1982 | EP0061193A1 Process for the recovery of sulfuric acid |
| 09/28/1982 | US4351807 Oleic acid and/or oleic acid and fatty acid with a cycloaliphatic oxime as phase transfer agent |
| 09/21/1982 | US4350667 Extraction of copper from an ammoniacal copper solution |
| 09/21/1982 | CA1132269A1 Extractants |
| 09/15/1982 | EP0059806A1 Anode slime treatment process |
| 09/14/1982 | US4349380 Method of recovering metals from metal containing materials |
| 09/08/1982 | EP0059616A1 Removal of metal catalysts from process streams |
| 09/08/1982 | EP0059227A1 Flotation process for the continuous recovery of silver or silver compounds from solutions or dispersions |
| 09/07/1982 | US4348367 Selective removal of cobalt(II) from aqueous solutions with phosphinic extractants |
| 08/31/1982 | CA1130572A1 Treating copper-bearing materials with a heterocyclic amine and a halogenated hydrocarbon to recover metal values therefrom |
| 08/25/1982 | EP0058468A1 Selective extraction agents |
| 08/24/1982 | US4346061 Purification of ammonium tungstate solutions |
| 08/24/1982 | CA1130237A1 Recovery of copper and zinc from complex chloride solutions |
| 08/18/1982 | EP0058148A2 Method of rejuvenating spent process- or leaching-liquors for metal-containing materials or ores by liquid-liquid extraction |
| 08/18/1982 | EP0057797A2 Process for the extraction of metal values and novel metal extractants |
| 08/18/1982 | EP0057684A1 Recovery of metal values |
| 08/17/1982 | US4344924 Quaternary amine solvents |
| 08/17/1982 | US4344650 Recovery of alkali values from trona deposits |
| 08/10/1982 | US4343773 Enhanced leaching of minerals which form product layers |
| 08/03/1982 | US4342657 Method for breaking petroleum emulsions and the like using thin film spreading agents comprising a polyether polyol |
| 08/03/1982 | US4342592 Non-polluting process for recovery of precious metal values from ores including those containing carbonate materials |
| 08/03/1982 | US4342591 Process for the recovery of gold and/or silver and possibly bismuth contained in sulfuretted ores and/or sulfoarsenides |
| 08/03/1982 | CA1128760A1 Process for treatment of residues from ferriferous zinc ores |
| 07/27/1982 | US4341743 Simultaneous oxidation and extraction of vanadium from wet-process phosphoric acid |
| 07/27/1982 | US4341741 Recovery of rhodium from carbonylation residues |
| 07/20/1982 | US4340570 Recovery of rhodium from carbonylation residues |
| 07/20/1982 | US4340569 Treatment of carbonylation residues |
| 07/20/1982 | CA1128219A1 Removal of metals from solution |
| 07/13/1982 | US4339348 Dioxime ion exchangers |
| 07/07/1982 | EP0055486A1 Process for producing aluminum oxide |
| 06/29/1982 | US4337227 Recovery of chromium from waste solutions |
| 06/29/1982 | US4337226 Recovery of platinum-group metals from ores |
| 06/29/1982 | US4337128 Redox systems |
| 06/22/1982 | US4336231 Copper extraction with either salicylaldoximes or benzophenone oximes and alkylphenols |
| 06/22/1982 | CA1126201A1 Hydrometallurgical method for treating nickel mattes |
| 06/16/1982 | EP0053971A1 Process for purifying a gallium solution by liquid-liquid extraction |
| 06/16/1982 | EP0053846A1 Selective binding of cadmium ions and method of selectively removing cadmium from aqueous solutions |
| 06/15/1982 | US4334999 From water insoluble compound dispersed in aqueous solution by ion exchange with alkyl acid phosphate and solvent extraction |
| 06/15/1982 | US4334887 Method for flocculating metal oxide particles in an organic medium |
| 06/15/1982 | CA1125520A1 Process for precipitating iron as jarosite with a low non-ferrous metal content |