| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 02/04/1987 | EP0210928A1 Extracting agents and propane diamides, their use to recover actinides and/or lanthanides and process for their preparation |
| 02/04/1987 | EP0210387A1 Selective removal of metals from aqueous solutions with dithiophosphinic acids |
| 02/04/1987 | EP0137048B1 Extractant for use in extractive separation of nickel and cobalt and process of using same |
| 02/03/1987 | US4640710 Process for recovering silver from sulfate solutions |
| 02/03/1987 | CA1217346A1 Hydrometallurgical recovery of metal values from copper containing sulphide materials |
| 01/29/1987 | DE3526491A1 Process for working up vanadium-containing used catalysts |
| 01/28/1987 | EP0210017A1 Recovery of noble metal values from carbonylation residues |
| 01/28/1987 | EP0210004A1 Solvent extraction process for separation of precious metals |
| 01/28/1987 | EP0209734A1 Process for the recovery of amine and metal compounds in the preparation of polyphenylene ether |
| 01/27/1987 | US4639355 Process for recovering gallium from aluminum smelting dust |
| 01/27/1987 | CA1217060A1 Metals recovery |
| 01/21/1987 | EP0209471A1 Process for separating by precipitation molybdenum contained in solutions of uranyl nitrate |
| 01/21/1987 | EP0209470A1 Process for separating by precipitation molybdenum contained in sulfuric or nitric solutions of uranium |
| 01/20/1987 | US4637920 Treating with sulfuric acid, reducing with iron scraps, precipitation with ammonia |
| 01/20/1987 | US4637865 Process for metal recovery and compositions useful therein |
| 01/15/1987 | DE3525013A1 Method for removing iron cations from an anode fluid |
| 01/14/1987 | EP0208586A1 Process to prevent extraction of technetium and/or rhenium, particularly in case of the extraction of uranium and/or plutonium by means of an organic solvent |
| 01/14/1987 | EP0061468B1 Recovery of silver from ores and concentrates |
| 01/14/1987 | EP0040243B1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers |
| 01/13/1987 | US4636368 Stabilized acidic aqueous solutions containing hydrogen peroxide and metallic ions and processes |
| 01/13/1987 | US4636367 Coprecipitation, fluidized beds |
| 01/07/1987 | EP0207403A2 Process for the preparation of high value titanium dioxide with sulfuric acid leaching |
| 01/06/1987 | US4634579 Precipitation |
| 01/06/1987 | US4634507 Process for the production of lead from sulphide ores |
| 12/30/1986 | US4632793 Method of fabricating hot pressed silicon nitride billets |
| 12/30/1986 | EP0206377A2 Extraction of transition metals from organic solutions |
| 12/30/1986 | EP0206022A2 Process for the treatment of heavy metal-containing residues issuing from the purification of raw phosphoric acids |
| 12/30/1986 | CA1215844A1 Method and apparatus for digesting gibbsitic bauxite in a counter-current regenerative system |
| 12/23/1986 | US4631176 Zinc chloride ammine precipitate, decomposing and electrolysis to elemental zinc |
| 12/23/1986 | US4631142 Extraction of uranium by chelation |
| 12/23/1986 | CA1215546A1 Process for recovering noble metals belonging to group viii of the periodic system of the elements from a contaminated catalyst solution originating from the carbonylation of methyl acetate and/or dimethylether |
| 12/23/1986 | CA1215545A2 Method for treating an insoluble composition loaded with th.sup.4.sup. and uo.sub.2.sup.2.sup. to separate th.sup.4.sup. therefrom |
| 12/23/1986 | CA1215544A1 Process for separating gallium and indium from aqueous solutions |
| 12/10/1986 | CN85103341A Continuous horizontal vacuum band-type filter machine and percolation filtration-dipping process |
| 12/09/1986 | US4627920 Process for the retention of a substance dissolved in a solution |
| 12/09/1986 | US4627900 Electrochemical dissolution and control of nickel sulfide scale |
| 12/09/1986 | CA1214943A1 Recovery of metal values from a pulp containing such values in dissolved form |
| 12/03/1986 | EP0203189A1 Method of recovery of gold and other metals |
| 12/02/1986 | US4626425 By adding hexamethylene tetramine to form a complex; precipitation |
| 12/02/1986 | US4626417 Methods for chemically reducing nitrogen oxides |
| 12/02/1986 | US4626416 Insoluble carrier with organic coordinating sites |
| 12/02/1986 | US4626280 Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material |
| 12/02/1986 | CA1214650A1 Process for the recovery of cadmium and other metals from solution |
| 11/26/1986 | EP0202833A2 Composition and use of the composition for the extraction of metals from aqueous solutions |
| 11/25/1986 | US4624704 Selective recovery of zinc from metal containing brines |
| 11/25/1986 | US4624703 Recovery of tungsten, scandium, iron, and manganese values from tungsten bearing material |
| 11/25/1986 | CA1214580A1 Apparatus and method for copper recovery |
| 11/25/1986 | CA1214335A1 Hydrodynamic recycle of metallic sulfide seed under pressure |
| 11/20/1986 | WO1986006750A1 Catalyst recovery process |
| 11/19/1986 | CN85104036A Direct prepn. of sodium stannate from tin concentrate |
| 11/18/1986 | US4623534 Complexing with hexamethylenetetramine |
| 11/18/1986 | US4623522 Complexing |
| 11/18/1986 | CA1214043A1 Biological-acid leach process |
| 11/12/1986 | CN85103711A Extraction of gallium from strongly basic sodium aluminate solution |
| 11/11/1986 | US4622149 Effluent treatment |
| 11/05/1986 | EP0200318A1 Further improvements in tungsten recovery |
| 11/05/1986 | EP0200317A2 Improvements in tungsten recovery |
| 11/05/1986 | EP0199905A1 Process for the liquid-liquid extraction of germanium or indium from aqueous solutions |
| 11/04/1986 | US4620964 Process for the treatment of complex manganese ores, such as marine nodules |
| 10/28/1986 | US4619838 Process for the deposition of metals on semiconductor powders |
| 10/28/1986 | US4619816 Recovery of cobalt from ammoniacal solutions containing cobalt and nickel |
| 10/28/1986 | US4619814 Roasting, leaching |
| 10/28/1986 | US4619762 Devices for recovering polymetal compounds discharged from a submarine hydrothermal source |
| 10/28/1986 | US4619744 Soluble crosslinkable polyelectrolyte |
| 10/21/1986 | US4618428 Membrane-based solvent extraction of aqueous solutions |
| 10/21/1986 | CA1212840A1 Control of silica scaling during acid leaching of lateritic ore |
| 10/15/1986 | EP0197444A2 Recovery of cobalt and chromium |
| 10/08/1986 | CN86100169A Process for purification of aqueous solutions of rare earth salts by liquid-liquid extraction |
| 10/07/1986 | US4615731 Hydrometallurgical processing of precious metal-containing materials |
| 10/01/1986 | EP0196153A2 Process for the extraction of metal values and novel metal extractants |
| 09/30/1986 | US4614543 Mixed lixiviant for separate recovery of zinc and lead from iron-containing waste materials |
| 09/25/1986 | WO1986005521A1 Immobilised extractants |
| 09/23/1986 | US4613361 High-temperature pretreatment by means of an alkaline aqueous solution of ores having an argillaceous gangue containing at least one usable element |
| 09/17/1986 | EP0194544A2 Recirculating process for sulfuric acid containing metallic sulfates |
| 09/17/1986 | EP0194346A1 Recovery of tungsten from ammoniacal solutions |
| 09/17/1986 | CN85102529A Collecting rare-earth from ion type rare-earth ore and the process for its comprehensive |
| 09/16/1986 | CA1211467A1 Catalytic hydroformylation of olefins |
| 09/16/1986 | CA1211290A1 Selective extraction of leau from its sulphides |
| 09/16/1986 | CA1211289A1 Direct niobium and tantalum extraction contained in the leaching pulp of a pyrochlore concentrate |
| 09/09/1986 | US4610861 Process for metal recovery by solvent extraction from CaSO4 containing sulfate solutions |
| 09/09/1986 | US4610722 Process for metal recovery from steel plant dust |
| 09/03/1986 | EP0193307A2 Process for the extraction of metal values and novel metal extractants |
| 09/03/1986 | EP0192651A1 1,3 disubstituted aromatic cyclohexane imides and method of use thereof as chelating agents |
| 09/03/1986 | CN85101961A Recovery of co-existing mo, bi, cu in tungsten ore |
| 09/02/1986 | CA1210746A1 Recovering metal compounds from used catalysts obtained from hydroprocessing hydrocarbon feedstocks |
| 09/02/1986 | CA1210594A1 Composition containing thiolates and process for the removal of heavy metal ions from dilute aqueous solutions |
| 09/02/1986 | CA1210592A1 Production of copper sulphate solution from a bed of metallic copper particles containing insoluble material |
| 09/02/1986 | CA1210564A1 Process for defluorinating an acid sulphate solution |
| 08/27/1986 | CN85100350A Processing of tungsten ore |
| 08/26/1986 | US4608084 Recovery of cobalt and chromium |
| 08/19/1986 | US4606764 Method of recovering metals from ores using a formate reducing agent |
| 08/19/1986 | US4606763 Using autoclave with successive compartments the first being largest in size |
| 08/06/1986 | EP0189831A1 Cobalt recovery method |
| 07/30/1986 | EP0188561A1 Extraction of metal values from aqueous liquids |
| 07/30/1986 | CN85100736A To remove iron from sulfate solutions by extraction |
| 07/29/1986 | US4602820 Recovering metal values from geothermal brine |
| 07/29/1986 | CA1208623A1 Process and apparatus for mixing a gas and a liquid |
| 07/23/1986 | EP0188394A1 Process for purifying an aqueous solution of rare-earth salt by liquid-liquid extraction |
| 07/22/1986 | US4601889 Adsorption by an acrylic polymer, uranium from seawater |
| 07/16/1986 | EP0187589A1 Process for recovering molybdenum-99 from a target of an irradiated uranium alloy |