| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 10/02/1979 | US4169809 Extractive purification of carboxylic acids containing monovalent and trivalent thallium carboxylates |
| 09/25/1979 | US4169130 A hydroxyquinoline, inert atmosphere |
| 09/25/1979 | CA1063041A1 Solvent extraction process and mixer-settler unit therefor |
| 09/19/1979 | EP0004226A1 Process for separating elements in the group consisting of the lanthanides and yttrium |
| 09/18/1979 | US4168297 Recovery of TiO2 from ilmenite-type ore using an organophosphoric acid extractant for impurity iron removal |
| 09/18/1979 | US4168295 Ultrasonic transducers |
| 09/18/1979 | CA1062475A1 Precipitation process |
| 09/18/1979 | CA1062474A1 Extraction and separation of copper and other metals from ammoniacal solution |
| 09/18/1979 | CA1062473A1 Refining of metals |
| 09/18/1979 | CA1062472A1 Process for leaching sulfide minerals |
| 09/04/1979 | US4166837 Solvent-extraction process for recovery and separation of metal values |
| 09/04/1979 | US4166737 Treatment with ferrous chloride and oxygen |
| 09/04/1979 | CA1061945A1 Amino alkylene phosphoric acid resins, their use and preparation |
| 09/04/1979 | CA1061573A1 Separation of metals |
| 09/04/1979 | CA1061572A1 Method of selectively bringing into solution the non-ferrous metals contained in sulphurized ores and concentrates |
| 09/04/1979 | CA1061571A1 Cuprion process start-up control |
| 09/04/1979 | CA1061570A1 Manganese nodules for oxidation leaching |
| 09/04/1979 | CA1061568A1 Process for extracting metal values from manganiferous ocean floor nodule ore |
| 08/28/1979 | US4166097 Carboxylic acid |
| 08/28/1979 | US4166045 Purification of combustion catalysts and solid propellant compositions containing the same |
| 08/28/1979 | CA1061282A1 Electrolytic recovery of metal from dispersion using cationic ion exchange agent |
| 08/28/1979 | CA1061121A1 Separation of platinum group metals and gold |
| 08/22/1979 | EP0003709A1 Hot leaching of ores with a liquid mainly containing a soluble bicarbonate |
| 08/14/1979 | CA1060219A1 Process for leaching raw sea nodules |
| 08/14/1979 | CA1060215A1 Refining of manganese oxide ores |
| 08/07/1979 | US4163664 Process for precipitating precious metals from solutions which contain them |
| 08/07/1979 | CA1059771A1 Hydrometallurgical process for the recovery of valuable components from the anode slime produced in the electrolytical refining of copper |
| 08/07/1979 | CA1059770A1 Hydrometallurgical treatment process for extracting constituent metal values from ferro-nickel |
| 08/07/1979 | CA1059769A1 Extraction of metal values from leached slurries |
| 07/24/1979 | US4162296 Liquid-liquid extraction of nickel |
| 07/24/1979 | US4162294 Chromium, aluminum, copper, zinc and nickel |
| 07/24/1979 | US4162231 Method for recovering palladium and technetium values from nuclear fuel reprocessing waste solutions |
| 07/24/1979 | US4162230 Method for the recovery of actinide elements from nuclear reactor waste |
| 07/11/1979 | EP0002970A1 Process for the extraction of gallium and gallium recovered thereby |
| 07/03/1979 | US4159930 Process for recovering heavy metal ions from dilute aqueous solution |
| 07/03/1979 | CA1057511A1 Method for selectively dissolving non-ferrous metals contained in pyritic ores |
| 07/03/1979 | CA1057507A1 Process for recovering cobalt values from an aqueous ammonical solution containing dissolved cobalt and other metals as ammine sulphates |
| 07/03/1979 | CA1057506A1 Method of producing metallic lead and silver from their sulfides |
| 06/27/1979 | EP0002497A1 Process for treating used ammoniacal copper-etching solutions |
| 06/26/1979 | US4159308 Solubilization with normally insoluble fluoride under acid conditions |
| 06/26/1979 | CA1057063A1 Recovery of base metals from manganese-containing ores |
| 06/19/1979 | CA1056855A1 5-heptyl-2-hydroxy benzaldoximes |
| 06/12/1979 | US4157946 Process for selective removal of bismuth and antimony from an electrolyte, especially in electrolytic refining of copper |
| 06/12/1979 | US4157912 Process for recovery of copper and zinc from complex sulphides |
| 06/12/1979 | CA1056160A1 Recovery of silver from silver-containing solutions |
| 06/05/1979 | CA1055711A1 Method of enhancing the atmospheric leaching of nickeliferous matte |
| 05/22/1979 | US4155750 Recovery and purification of rhodium |
| 05/22/1979 | CA1055034A1 Organic reagents and process of preparing same |
| 05/22/1979 | CA1054802A1 Membrane hydro-metallurgical extraction process |
| 05/22/1979 | CA1054778A1 Hydrometallurgical processing of metal sulfides |
| 05/15/1979 | CA1054379A1 Halidation of nonferrous metal values in manganese oxide ores |
| 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 | CA1053914A1 Metal recovery from sulfate solutions |
| 05/01/1979 | US4152396 Solvent extraction, beta-diketones |
| 05/01/1979 | US4152143 Method and apparatus for precipitating metal cement |
| 04/24/1979 | US4151258 Slurrying, acidification |
| 04/24/1979 | US4151257 Chlorination, oxidation, sulfation, solvent extraction, precipitation, ion exchanging, complexing |
| 04/24/1979 | US4150977 Process for stripping photographic materials |
| 04/24/1979 | CA1053377A1 Semiconductor device |
| 04/17/1979 | US4150091 Manganese ore leaching process |
| 04/17/1979 | CA1052586A1 Process for oxidizing metal sulfides to elemental sulfur using activated carbon |
| 04/17/1979 | CA1052585A1 Liquid ion exchange extraction of zinc |
| 04/17/1979 | CA1052584A1 Method of extraction of nickel and copper from the nodules of deep-sea beds |
| 04/17/1979 | CA1052582A1 Process for liquid/liquid extraction of gallium |
| 04/10/1979 | US4148862 Hydrometallurgical treatment of soluble silicate-bearing zinc materials |
| 04/10/1979 | US4148816 Alkali metal mercaptide solvent extraction of cobalt, nickel |
| 04/10/1979 | US4148815 Amino-thiol nickel and cobalt solvent extraction |
| 04/10/1979 | US4148813 Hydrometallurgy |
| 04/10/1979 | US4148698 Refining of ferrous and base metal sulphide ores and concentrates |
| 04/10/1979 | US4148631 Stripping of cobalt from nickel-cobalt loaded organic |
| 04/03/1979 | US4147530 Reductions of inorganic substrates with chelated sodium hydridoaluminates or hydridoborates |
| 04/03/1979 | CA1052021A1 Fixing agent of heavy metal |
| 04/03/1979 | CA1052019A1 Continuous process for extracting nitrates from nitrate-containing solutions |
| 04/03/1979 | CA1051798A1 Method of treating a biomass and particularly fungi mycelia for metal retention by agglomeration |
| 04/03/1979 | CA1051671A1 Process for treating manganese nodules |
| 04/03/1979 | CA1051669A1 Method of recovery of the constituent elements of catalysts based of precious metals |
| 03/27/1979 | US4146572 Simultaneous extraction of metal values other than copper from manganese nodules |
| 03/20/1979 | US4145397 Process for recovering molybdenum, vanadium, cobalt and nickel from roasted products of used catalysts from hydrotreatment desulfurization of petroleum |
| 03/20/1979 | US4145212 Process for recovering silver and optionally gold from a solid starting material containing said metals |
| 03/20/1979 | CA1050768A1 Automatic leaching system for hydrometallurgical production of zinc |
| 03/13/1979 | US4144310 High slurry density sulfidic mineral leaching using nitrogen dioxide |
| 03/13/1979 | CA1050555A1 N-imidazole compounds and their complex metal derivatives |
| 03/13/1979 | CA1050282A1 Recovery of nickel and other metals from sulphide ores |
| 03/13/1979 | CA1050281A1 Two-stage fluid bed reduction of manganese nodules |
| 03/13/1979 | CA1050280A1 High temperature neutralization of laterite leach slurry |
| 03/13/1979 | CA1050279A1 Solvent extraction of copper |
| 03/13/1979 | CA1050278A1 Leaching limonitic ores |
| 03/06/1979 | US4142952 Copper extraction with salicylaldoxime-p-nonylphenol mixtures |
| 03/06/1979 | CA1049796A1 Process for the extraction of metal ions from an aqueous solution |
| 03/06/1979 | CA1049794A1 Separation and/or purification of precious metals |
| 02/27/1979 | CA1049267A1 Method of reclaiming nickel values from a nickeliferous alloy |
| 02/13/1979 | US4139460 Reduction with metal sulfide |
| 02/13/1979 | CA1048278A1 Metal carbonate recycle to reduction circuit in the cuprion process |
| 02/13/1979 | CA1048277A1 Recovery of pt/rh from car exhaust catalysts |
| 02/07/1979 | EP0000665A1 Rhodium recovery from hydroformylation still heel with triaryl phosphate ligand |
| 02/06/1979 | CA1048176A1 Process for purifying aqueous solutions, of metal ions precipitating as arsenides, antimonides, tellurides, selenides, and tin and mercury alloys |
| 01/30/1979 | US4137291 Extraction of metal values from manganese nodules |
| 01/30/1979 | US4137290 Ion absorbing, reversal of fluid flow |