| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 11/01/1983 | US4413118 Process for removal of homogeneous catalyst group VIII metals from process streams |
| 11/01/1983 | CA1156052A1 Recovery of metal values |
| 11/01/1983 | CA1156049A1 Copper leaching process |
| 10/25/1983 | US4411698 Acidification, reaction with alcohol to form metallic compounds, then reduction |
| 10/25/1983 | US4411665 Wet treatment for preserve dyeing using acid dyes and alkylene oxide fatty amine adducts or fatty amine-modified polyethers |
| 10/25/1983 | US4411612 Apparatus for recovering precious metals from their ores |
| 10/18/1983 | US4410498 Acid leaching of nickel from serpentinic laterite ores |
| 10/18/1983 | US4410496 Recovery of metal values from complex sulfides |
| 10/11/1983 | CA1155131A1 Carbonates carrying cyclic carbonate groups, the process for their manufacture and their application to the extraction of valuable metal species from aqueous solutions |
| 10/11/1983 | CA1155084A1 Process for the recovery of metal values from anode slimes |
| 10/05/1983 | EP0090692A1 Process for recovering and purifying a residual sulphuric acid containing titanium salts |
| 10/05/1983 | EP0090515A2 Treatment of solutions to facilitate the removal of ferric iron therefrom |
| 10/05/1983 | EP0090119A2 Selectively stripping iron ions from an organic solvent |
| 10/04/1983 | CA1154601A1 Cobalt leaching process |
| 10/04/1983 | CA1154599A1 Hydrometallurgical processing of precious metal-containing materials |
| 09/27/1983 | US4406865 Binding, stripping |
| 09/27/1983 | US4406696 Process for recovering of metals from solutions of metal salts |
| 09/27/1983 | CA1154377A1 Solution mining process |
| 09/27/1983 | CA1154269A1 Recovery of uranium from sulphate solutions containing molybdenum |
| 09/27/1983 | CA1154265A1 Precious metals recovery process |
| 09/21/1983 | EP0089254A1 Control of silica scaling during acid leaching of lateritic ore |
| 09/21/1983 | EP0089185A2 Dissolution of Pu02 or Np02 using electrolytically regenerated reagents |
| 09/20/1983 | US4405569 Hydrometallurgical process for extracting metal values from complex ores containing arsenic and sulfur |
| 09/20/1983 | US4405566 Removal of uranium from sulphate solutions containing molybdenum |
| 09/13/1983 | US4404119 Oxidation of tetracarbonylcobaltate |
| 09/06/1983 | USRE31374 Spheres, buoyancy, barriers, apertures, hermetic sealing |
| 09/01/1983 | WO1983002952A1 Stimulation of bacterial growth by inorganic pyrophosphate |
| 08/31/1983 | EP0087065A1 Process for the reduction of the heavy metal content in raw phosphate |
| 08/31/1983 | EP0086841A1 Process for recovering silver and photosensitive material base from photosensitive material by utilizing microorganism |
| 08/30/1983 | US4401630 Oxidative leaching, metathesis, treating filtrate with ammonia |
| 08/30/1983 | US4401531 Process for the production of electrolytic zinc or high purity zinc salts from secondary zinc raw-materials |
| 08/30/1983 | CA1152851A1 Micellar solutions of thin film spreading agents comprising a polyether polyol |
| 08/23/1983 | US4400299 Formation of dicobalt octacarbonyl |
| 08/23/1983 | CA1152337A1 Leaching of sulphidic mattes containing non-ferrous metals and iron |
| 08/16/1983 | US4399312 Catalytic process |
| 08/16/1983 | US4399109 Control of silica scaling during acid leaching of lateritic ore |
| 08/16/1983 | CA1152090A1 Metal salts of polyacetylenic compounds and uses thereof |
| 08/10/1983 | EP0085522A2 Solvent extraction |
| 08/09/1983 | US4397689 Process for the extraction of precious metals from concentrates thereof |
| 08/02/1983 | US4396556 Process of preparing organophosphorus compounds by phase transfer catalysis |
| 08/02/1983 | CA1150953A1 Liquid-liquid extraction of metal values from aqueous solution |
| 07/27/1983 | EP0084517A1 Process for depositing metals on semi-conductive powders |
| 07/27/1983 | EP0028648B1 Method for recovering molybdenum from tungsten solutions |
| 07/26/1983 | CA1150519A1 Process for the extraction of metal ions |
| 07/19/1983 | US4394353 Complexing agent |
| 07/19/1983 | CA1150064A1 Process and apparatus for recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers |
| 07/19/1983 | CA1150063A1 Method of acid leaching of silicates |
| 07/12/1983 | US4392962 Process for separating metals from aqueous solutions |
| 07/12/1983 | CA1149601A1 Method for complexing metal oxide particles in an organic medium |
| 07/06/1983 | EP0083272A1 Liquid-liquid extraction by means of microemulsions of substances dissolved in water |
| 07/05/1983 | US4391945 Chelate resin prepared by reacting butane-1,2,3,4-tetra-carboxylic acid or anhydride with polyethylene polyamine |
| 07/05/1983 | CA1149178A1 Precipitation of metal values from organic media |
| 06/28/1983 | US4390508 Solvent extraction, thermal decomposition of ammonium or potassium |
| 06/28/1983 | US4390366 Process for the extraction of precious metals from solutions thereof |
| 06/21/1983 | US4389379 Process for selective liquid-liquid extraction of germanium |
| 06/21/1983 | CA1148367A1 Solvent extraction process for the removal of iron (iii) from leach liquors |
| 06/21/1983 | CA1148362A1 Method for recovering molybdenum from tungstate solutions |
| 06/15/1983 | EP0081310A2 Metal sulphide extraction |
| 06/14/1983 | CA1147971A1 Process for the oxidation of ferrous ions to the ferric state in sulfate leach solutions |
| 06/14/1983 | CA1147970A1 Process for cobalt recovery from mixed sulfides |
| 06/08/1983 | EP0080996A2 Process for recovering metals from acid solutions of their salts |
| 05/31/1983 | US4386057 Reacting magnetic fly ash with alkali to precipitate aluminosilicate hydrate salts soluble with mineral acid |
| 05/31/1983 | US4386056 Ion exchanging, precipitation of oxalates |
| 05/31/1983 | CA1147483A1 Recovery of metals |
| 05/31/1983 | CA1147482A1 Process for recovering precious metals |
| 05/24/1983 | US4385037 Concentrated sulphuric acid treatment of an alkylphenyl acid phosphate extractant |
| 05/24/1983 | US4384940 Chlorine leaching of nickel-cobalt-iron sulphides |
| 05/24/1983 | US4384889 Simultaneous leaching and cementation of precious metals |
| 05/24/1983 | CA1146906A1 Treating cement copper cake by acid leach and caustic leach to produce zinc arsenate |
| 05/24/1983 | CA1146763A1 Process for reducing organic solvant losses during treatment of a suspension resulting from the acid treatment of an ore |
| 05/24/1983 | CA1146761A1 Treatment for rare earthes and gallia oxides mixtures |
| 05/24/1983 | CA1146723A1 Removal of selenium from acidic copper/nickel solutions |
| 05/18/1983 | EP0079258A1 Process for extracting and separating uranium, thorium and rare earths by treating aqueous solutions of the chlorides of said elements |
| 05/17/1983 | US4383979 Improved by classifying particles into fine and course fractions, comminution |
| 05/10/1983 | US4383104 Condensing a phenolic alkyl amine with phosphorous acid and formaldehyde; adding a phenol and an aldehyde; adsorbers; stability |
| 05/10/1983 | US4382872 Metallurgical extractant system |
| 05/10/1983 | CA1145952A1 Process for selective leaching of nickel- copper matte |
| 05/04/1983 | EP0078154A2 Plasmids and cells for heterologous expression of metallothioneins and processes for producing and using the metallothionein |
| 05/04/1983 | EP0078051A2 Process for separating heavy metal values from intermediate products in the manufacture of phosphatic fertilizers |
| 05/03/1983 | US4382067 Solvent extraction of platinum group metals |
| 05/03/1983 | US4382016 Extractant for the selective removal of cobalt(II) from aqueous solutions |
| 05/03/1983 | CA1145553A1 Process for non-ferrous metals production from complex sulphide ores containing copper, zinc, lead, silver and gold |
| 04/26/1983 | US4381287 Separation of zirconium and uranium |
| 04/26/1983 | CA1145144A1 Bioadsorption alteration of iron sulfide surfaces |
| 04/13/1983 | EP0020483B1 Improvements relating to extractants |
| 04/12/1983 | CA1144341A1 Process for the separation of ferrous, aluminous and manganous contaminations from hydrochloric magnesium chloride solutions |
| 04/12/1983 | CA1144340A1 Process for the recuperation of sulfuric acid |
| 04/06/1983 | EP0076094A2 Extraction |
| 04/06/1983 | EP0075930A2 Process for producing magnesium and/or nickel by liquid-liquid extraction |
| 04/05/1983 | US4379126 Process for recovering tungsten values from alkali solutions |
| 03/29/1983 | US4378275 Metal sulphide extraction |
| 03/29/1983 | CA1143573A1 Recovery of nickel from nickeliferous sulfide material |
| 03/29/1983 | CA1143572A1 Uranium ore processing |
| 03/15/1983 | US4376826 Continuous production of bacteria for leaching of metallic ore |
| 03/15/1983 | US4376653 Process for the production of nickel, high-purity magnesium oxide and cement |
| 03/15/1983 | CA1143077A1 Separation of uranium by biosorption |
| 03/08/1983 | CA1142364A1 Global recuperation process of uranium, rare earths, thorium and yttrium from acid solutions |
| 03/08/1983 | CA1142325A1 Process for the removal of metals from carbon black |
| 03/03/1983 | WO1983000630A1 Process for recovering silver and photosensitive material base from photosensitive material by utilizing microorganism |
| 03/02/1983 | EP0073108A1 A process for the recovery of metals |