| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 11/12/1985 | US4552632 Hydrometallurgical method of extraction of copper from sulphide-containing material |
| 11/12/1985 | US4552629 Leaching, filtration, oxidation, stripping circulation |
| 11/12/1985 | CA1196619A1 Process and solvent for extraction of the chromates present in an aqueous solution |
| 11/05/1985 | US4551315 With sulfuric acid |
| 11/05/1985 | US4551314 Process for improving solvent extraction operation using two mixers |
| 10/29/1985 | CA1195846A1 Recovery of zinc from zinc-containing sulphidic material |
| 10/22/1985 | US4548800 Reacting selenic acid or selenium oxide with alcohol, then reduction |
| 10/22/1985 | US4548794 Method of recovering nickel from laterite ores |
| 10/22/1985 | US4548790 Dialkylcarbamoylmethylphospine oxide derivates as extractants |
| 10/22/1985 | CA1195511A1 Separation of cobalt from nickel |
| 10/22/1985 | CA1195510A1 Process for the production of nickel, high-purity magnesium oxide and cement |
| 10/22/1985 | CA1195506A1 Method of recovering both silver and a base for sensitive materials from sensitive materials by utilizing micro-organisms |
| 10/16/1985 | EP0158555A1 Process for recovering plutonium contained in solid waste |
| 10/15/1985 | US4547346 Process for the separation of arsenic from acid solutions containing it |
| 10/09/1985 | EP0157561A2 Metal stripping system and an operation process therefor |
| 10/09/1985 | EP0157514A2 Reclamation of high purity selenium |
| 10/08/1985 | US4546202 Process for the recovery of cobalt and manganese from oxidation residue incinerator ash, pyrolysis sand and pyrolysis char |
| 10/08/1985 | US4545816 Processes relating to the extraction of metals from laterites and ocean manganese nodules |
| 10/02/1985 | EP0156735A1 Process for separating rare earths by liquid-liquid extraction |
| 10/02/1985 | EP0156617A2 Production of metal fluorides |
| 10/02/1985 | EP0156253A2 Process for recovering rhodium from oxo synthesis reaction products |
| 10/01/1985 | US4544532 Hydroxy aryl ketoximes and hydroxy aryl aldoximes |
| 09/25/1985 | EP0145728A4 Extraction of metals from ores. |
| 09/18/1985 | EP0155250A1 A method for recovering the metal values from materials containing iron |
| 09/17/1985 | US4541994 Method of liberating nickel- and cobalt-enriched fines from laterite |
| 09/17/1985 | US4541993 Process for the sulfatization of non-ferrous metal sulfides |
| 09/17/1985 | US4541868 Recovery of nickel and cobalt by controlled sulfuric acid leaching |
| 09/17/1985 | US4541861 Process for the production of cobalt, nickel and copper powders from chelating extractants |
| 09/17/1985 | CA1193793A1 Chelate resin |
| 09/17/1985 | CA1193448A1 Hydrometallurgical process for the recovery of valuable metals from sulfidic, silicate-containing raw materials |
| 09/17/1985 | CA1193443A1 Method for back extraction of indium from organic solvent phase |
| 09/12/1985 | WO1985003952A1 Method for separation and leaching of the valuable metals in metal sulphide materials |
| 09/11/1985 | EP0154448A2 Process for recovery of zirconium by solvent extraction |
| 09/10/1985 | US4540435 Solvent extraction of gold and silver anions under alkaline conditions |
| 09/10/1985 | CN85100841A A liquid-liquid extraction apparatus and its process with formation of precipitate attacked |
| 09/10/1985 | CA1193265A1 Process for the extraction of metal values using substituted pyridine extractants |
| 09/10/1985 | CA1193107A1 Process for the selective dissolution of cobalt from cobaltite-pyrite concentrates |
| 09/03/1985 | US4539041 Process for the reduction of metallic compounds by polyols, and metallic powders obtained by this process |
| 09/03/1985 | US4539040 Lateral deflection of liquid stream |
| 08/27/1985 | CA1192362A1 Wet zinc dust atomization and distribution |
| 08/20/1985 | US4536214 Metal sulphide extraction |
| 08/13/1985 | CA1191700A1 Process for extracting heavy metal ions from aqueous solutions |
| 08/06/1985 | US4533526 Collecting geothermal fluid and concentrating |
| 07/24/1985 | EP0148890A1 Metal sulphide extraction |
| 07/23/1985 | US4530963 Insoluble chelating compositions |
| 07/23/1985 | US4530819 Process for reducing the iron |
| 07/23/1985 | US4530718 Process for reclamation of high purity selenium from scrap alloys |
| 07/23/1985 | CA1190748A1 Process for purifying molybdenite concentrates |
| 07/23/1985 | CA1190720A1 Process for removing heavy metal ions and arsenic from wet-processed phosphoric acid |
| 07/17/1985 | EP0148663A2 Process for recovering silver from sulfate solutions |
| 07/17/1985 | EP0148194A1 High temperature pre-treatment by means of an aqueous alcolyne solution of clayish gangue ore containing at least one valuable element. |
| 07/16/1985 | CA1190401A1 Process for treating sulphated lead compounds for recovering metallic lead and a high-purity sulphate and an installation therefor |
| 07/10/1985 | EP0147824A2 Process for the preparation and the recovery of rhodium from oxosynthesis products |
| 07/09/1985 | US4528167 Selective solvent extraction using organophosphorus and carboxylic acids and a non-chelating aldehyde oxime |
| 07/09/1985 | US4528165 Separation of uranium from technetium in recovery of spent nuclear fuel |
| 07/09/1985 | CA1190247A2 Branched alkyl ether amines as iron ore flotation aids |
| 07/09/1985 | CA1190048A1 Selective solvent extraction using organophosphorus and carboxylic acids |
| 07/02/1985 | US4526762 Recovery of vanadium from acidic solutions thereof |
| 07/02/1985 | US4526615 Impermeable pad having reservoirs for ore for leaching, means for introducing leach solution |
| 07/01/1985 | EP0129564A4 Bacterial beneficiation of minerals. |
| 06/26/1985 | EP0145728A1 Extraction of metals from ores |
| 06/25/1985 | US4525333 Process for separating gallium and indium from aqueous solutions |
| 06/25/1985 | US4525330 Process for the extraction of metal values and novel metal extractants |
| 06/25/1985 | US4525279 Polyethersiloxane copolymer |
| 06/19/1985 | EP0145659A2 Liquid-liquid extraction process of gallium from aqueous basic solutions using an organic extractant |
| 06/19/1985 | EP0144566A1 Process for extracting and purifying platinum group metals |
| 06/19/1985 | EP0144565A1 Process for extracting and purifying platinum group metals |
| 06/11/1985 | US4522723 Reduction of sulfate ions to sulfides with bacteria |
| 06/06/1985 | WO1985002412A1 PROCESS INTENDED TO IMPROVE THE RESISTANCE TO AsIII AND AsV OF BACTERIAL STRAINS PARTICULARLY THIOBACILLUS FERROOXIDANS |
| 06/06/1985 | WO1985002390A1 Process for liquid-liquid extraction of gallium from basic aqueous solutions by means of an organic extraction agent |
| 06/05/1985 | EP0143749A1 Liquid-liquid extraction process of gallium from aqueous basic solutions using an organic extractant |
| 06/04/1985 | US4521386 Procedure for obtaining high purity magnesium salts or their concentrate solutions from sea water, brine or impure magnesium salt solutions |
| 06/04/1985 | US4521381 Recovery of rhenium |
| 06/04/1985 | CA1188109A1 Metal recovery |
| 05/29/1985 | EP0143007A1 In situ leaching process |
| 05/28/1985 | CA1187707A1 Process for separating germanium from an aqueous solution by means of an alphahydroxyoxime |
| 05/28/1985 | CA1187706A1 Process for separating germanium from an aqueous solution |
| 05/23/1985 | WO1985002171A1 Process for liquid-liquid extraction of gallium from basic aqueous solutions by means of an organic extraction agent |
| 05/22/1985 | EP0142291A1 Process for separation of zirconium from hafnium |
| 05/21/1985 | US4518570 Process for separating antimony from columbium solutions |
| 05/21/1985 | US4518420 Winning metal from ore |
| 05/15/1985 | EP0141313A1 Process for the regeneration of hydrochloric acid-based pickles containing iron and zinc |
| 05/14/1985 | CA1186903A1 Hydrometallurgical process for the recovery of lead |
| 05/07/1985 | US4515757 Stripping a solution containing molybdenum, tungsten and/or vanadium values |
| 05/07/1985 | US4515696 Separation of residue after neutralization before precipitation |
| 04/30/1985 | US4514369 Recovery of cobalt, molybdenum, nickel, tungsten and vanadium from an aqueous ammonia and ammonium salt solution by coextracting molybdenum, tungsten and vanadium and sequential extraction of nickel and cobalt |
| 04/30/1985 | US4514368 Leaching nickel, cobalt, molybdenum, tungsten, and vanadium from spent hydroprocessing catalysts |
| 04/30/1985 | CA1186155A1 Gold recovery process |
| 04/17/1985 | EP0137048A1 Extractant for use in extractive separation of nickel and cobalt and process of using same |
| 04/16/1985 | US4511541 Process for the recovery of cadmium and other metals from solution |
| 04/16/1985 | US4511540 Exploitation of copper, nickel and cobalt by treating manganiferous matrix oxidized ores |
| 04/16/1985 | CA1185406A1 Solvent extraction |
| 04/10/1985 | EP0136578A2 Separation of Th 4+ from compositions loaded with Th 4+ and UO2 2+ |
| 04/03/1985 | EP0136028A2 Extracting cobalt from aqueous solutions containing nickel |
| 04/03/1985 | EP0135950A1 Process for winning copper and optionally silver and gold by leaching oxidic and sulphurized materials using cyanides soluble in water |
| 04/02/1985 | US4508838 Compositions containing thiolates for removal of heavy metal ions from dilute aqueous solutions |
| 04/02/1985 | US4508688 Method of regenerating acetate in a metal removal process |
| 03/26/1985 | US4507268 Extraction of copper with hydroxyarylketoximes and aldoximes |
| 03/26/1985 | CA1184470A1 Preparation process of acid phase and hydrophobic phase microemulsions |
| 03/26/1985 | CA1184387A1 Process for recovering rare metals from the combustion residue of coal by digestion |