| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 06/15/1982 | CA1125519A1 Metal recovery |
| 06/08/1982 | US4333913 Alkali metal hydroxides, reacting peroxide with mercury polysulfide to precipitate mercury oxide |
| 06/08/1982 | CA1125227A1 Process for recovering cobalt electrolytically |
| 06/08/1982 | CA1125033A1 Recovery of gold and silver values |
| 06/01/1982 | US4332687 Mixture of peroxide and ozone to oxidize and decompose complexes |
| 06/01/1982 | US4332684 Process for treating an organic phase containing iron chloride, molybdenum chloride and HCl |
| 06/01/1982 | CA1124506A1 Process for purifying rare-earth compositions using fractional sulfate precipitation |
| 05/27/1982 | WO1982001725A1 A method for separating and recovering nickel and copper from complex materials |
| 05/26/1982 | EP0052595A1 A method for separating and recovering nickel and copper from complex materials |
| 05/26/1982 | EP0052253A2 Process for winning metals from aqueous solutions |
| 05/25/1982 | US4331635 Recovery of copper and/or nickel and/or zinc |
| 05/25/1982 | US4331634 Oxime, phase transfer agent |
| 05/25/1982 | US4331520 Process for the recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers |
| 05/25/1982 | US4331473 Silver removal apparatus and method |
| 05/25/1982 | US4331472 Metal removal apparatus and method |
| 05/25/1982 | CA1124085A1 Liquid-liquid extraction of nickel values |
| 05/25/1982 | CA1124083A1 Solvent extraction of chromium and vanadium |
| 05/18/1982 | US4330509 Precipitation of zirconium with tartaric acid |
| 05/18/1982 | CA1123613A1 Process for the precipitation of a metal from a solution containing metal ions |
| 05/18/1982 | CA1123610A1 Recovery of copper from materials containing copper and acid soluble iron compounds |
| 05/11/1982 | US4329224 Wastewater treatment process |
| 05/10/1982 | EP0040243A4 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 05/04/1982 | US4328191 Process for the recovery of molybdenum from spent catalysts |
| 05/04/1982 | US4328190 Solvent extraction of tungsten from aqueous tungstate solutions |
| 04/29/1982 | WO1982001369A1 Stabilization of substituted 8-hydroxyquinoline hydrometallurgical reagents |
| 04/27/1982 | US4327061 Recovering uanadium values or uranium values |
| 04/27/1982 | US4326985 Micellar solutions of thin film spreading agents comprising an acylated polyether polyol |
| 04/27/1982 | US4326984 Demulsifiers |
| 04/27/1982 | US4326983 Micellar solutions of thin film spreading agents comprising a polyether polyol |
| 04/27/1982 | US4326968 Method for breaking petroleum emulsions and the like using micellar solutions of thin film spreading agents comprising polyepoxide condensates of resinous polyalkylene oxide adducts and polyether polyols |
| 04/27/1982 | CA1122420A1 Rare earth separation process |
| 04/27/1982 | CA1122419A1 Process for re-extracting metal from an organic extraction solution in which the metal is present as a metal chloride complex |
| 04/27/1982 | CA1122414A1 Leaching of minerals |
| 04/20/1982 | US4325732 Precious metal recovery cartridge and method |
| 04/20/1982 | CA1122016A1 Solvent extraction of palladium from platinum group metal-containing solutions |
| 04/20/1982 | CA1122015A1 Process for microbiologically leaching coke |
| 04/15/1982 | WO1982001195A1 Recovery of silver and gold from ores and concentrates |
| 04/14/1982 | EP0049567A1 Process for the extraction of precious metals from solutions thereof |
| 04/13/1982 | US4324771 Alcohol & hydroxyoxime extractant for boron & calcium from brines |
| 04/13/1982 | US4324764 Apparatus for continuous leaching of ores |
| 04/13/1982 | CA1121605A1 Recovery of non-ferrous metals by thermal treatment of solutions containing non-ferrous and iron sulphates |
| 04/13/1982 | CA1121603A1 High temperature ore reduction with a liquor containing essentially a soluble bicarbonate |
| 04/07/1982 | EP0049169A2 Hydrometallurgical processing of precious metal-containing materials |
| 04/07/1982 | EP0049064A1 Recovery of vanadium |
| 04/06/1982 | US4323541 Selective two stage leaching of nickel from nickel-copper matte |
| 04/06/1982 | US4323539 Apparatus for continuously leaching ore |
| 04/06/1982 | CA1121301A1 Selective removal of bismuth and antimony from copper electrolyte by salt addition |
| 03/30/1982 | US4322390 Hydrometallurgical recovery of copper, cobalt nickel with reductive and oxidative leaching |
| 03/24/1982 | EP0048103A1 Process for the extraction of precious metals from concentrates thereof |
| 03/23/1982 | US4321236 Process for beneficiating titaniferous materials |
| 03/23/1982 | US4321235 Process for the treatment of alkaline liquors containing sulfate ions |
| 03/23/1982 | US4321213 Useful as a cobalt(ii) extractant |
| 03/23/1982 | CA1120272A1 Manganese ore leaching process |
| 03/16/1982 | US4320108 Process for the removal of metals from carbon black |
| 03/16/1982 | US4320097 Recovery of vanadium from acidic solutions thereof |
| 03/16/1982 | US4320093 Separation of uranium by biosorption |
| 03/16/1982 | CA1119819A1 Process for separation and recovery of cobalt by stripping |
| 03/16/1982 | CA1119818A1 Process for separating cobalt and nickel from a solution containing cobalt and nickel |
| 03/16/1982 | CA1119784A1 Inclined separation screen for agitation tank |
| 03/10/1982 | EP0046940A2 Extraction process for the selective removal of cobalt (II) from aqueous solutions |
| 03/10/1982 | EP0046933A2 Extraction process for the selective removal of cobalt (II) from aqueous solutions |
| 03/09/1982 | US4318893 Oxidation of americium to a valence of 6 using a persulfate and silver cations in the presence of phosphoric acid |
| 03/04/1982 | WO1982000664A1 Process for selective extraction of germanium |
| 03/02/1982 | US4317887 Metal complexing polymers |
| 03/02/1982 | US4317804 Process for the selective removal of ferric ion from an aqueous solution containing ferric and other metal ions |
| 03/02/1982 | US4317803 Recovery of non-ferrous metals by thermal treatments of solutions containing non-ferrous and iron sulphates |
| 03/02/1982 | CA1119003A1 Process for extracting tungsten from alkali metal tungstate solutions |
| 02/24/1982 | EP0046437A1 Process for the selective extraction of germanium |
| 02/23/1982 | US4316808 Method for breaking petroleum emulsions and the like using micellar solutions of thin film spreading agents comprising an acylated polyether polyol |
| 02/18/1982 | WO1982000478A1 Recovery of metal values |
| 02/16/1982 | CA1118210A1 Process for separating iron from an organic extraction medium |
| 02/09/1982 | US4314976 Ammonium hydroxide leaching, ph regulated solvent extraction |
| 02/09/1982 | CA1117897A1 Continuous process for the purification of zinc plant electrolyte |
| 02/09/1982 | CA1117772A1 Nitric acid-oxygen leaching of sulfidic minerals |
| 02/09/1982 | CA1117771A1 Process and apparatus for continuous leaching of ores |
| 02/09/1982 | CA1117770A1 Nickel and cobalt extractant and method of use |
| 02/09/1982 | CA1117769A1 Winning nickel and cobalt with mercaptide extractants and carbon monoxide strip |
| 02/09/1982 | CA1117767A1 Process for liquid/liquid extraction recovery of gallium contained in very basic solutions |
| 02/02/1982 | US4313826 Liquid-liquid extraction apparatus |
| 01/26/1982 | CA1116872A1 Hydrometallurgical process for extracting zinc |
| 01/26/1982 | CA1116871A1 Process for extracting nickel from pre-reduced lateritic ore |
| 01/20/1982 | EP0043919A2 Process for winning metals from complex ores or scraps |
| 01/19/1982 | US4311521 Membrane separation of catalyst metals from trimellitic acid production and separation of cobalt from manganese |
| 01/19/1982 | CA1116412A1 Recovery of nickel and cobalt from leach slurries |
| 01/19/1982 | CA1116408A1 Process for recovering molybdenum and tungsten from mining wastewater |
| 01/12/1982 | CA1116158A1 Impregnated polymers |
| 01/05/1982 | US4309390 Separation of cobalt and manganese from trimellitic acid process residue by extraction, pH adjustment, and magnet |
| 01/05/1982 | US4309389 Pyrohydrolysis of fluoro acid complexes |
| 01/05/1982 | US4309306 Demulsifiers for water in oil emulsions; enhanced oil recovery |
| 01/05/1982 | US4309215 Method for the cementation of metals |
| 12/30/1981 | EP0042747A1 Method of treating rare-earth minerals or concentrates |
| 12/29/1981 | US4308239 Obtaining copper (I) chloride from ores with acetonitrile |
| 12/29/1981 | CA1115024A1 Process of hydrometallurgical treatment for eliminating impurities from a solution containing dissolved metals |
| 12/23/1981 | EP0042069A2 Metal salts of polyacetylenic compounds and uses thereof |
| 12/22/1981 | US4306981 Method for breaking petroleum emulsions and the like comprising resinous polyalkylene oxide adducts |
| 12/15/1981 | US4306081 Symmetrical quaternary ammonium compounds and their use in heavy metals recovery |
| 12/15/1981 | US4305914 Dilution |
| 12/15/1981 | CA1114176A1 Process for recovering heavy metal ions from dilute aqueous solution |
| 12/15/1981 | CA1114175A1 Process for the recovery of zinc, copper and cadmium in the leaching of zinc calcine |
| 12/10/1981 | WO1981003500A1 Heavy metal recovery in ferrous metal production processes |