| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 03/16/2005 | CN1596317A Integrated ammoniacal solvent extraction and hydrogen reduction of nickel |
| 03/16/2005 | CN1594611A Niobium purifying method |
| 03/16/2005 | CN1594610A Method for biological desulfurization by catalytic oxidation of pyrite residue and associated non-ferrous metal leach |
| 03/16/2005 | CN1594609A Method for producing mischmetal using Mianning rare earth ore as raw material |
| 03/16/2005 | CN1594608A Method for extracting platinum-palladium and base metal from platinum metal sulphide ore |
| 03/16/2005 | CN1193106C Method for preparing nano active zinc oxide from low grade zinc containing material |
| 03/15/2005 | US6866833 Fluoroalkylated thiourea derivative; extracting gold, platinum, silver, palladium and rhodium |
| 03/10/2005 | WO2005021810A1 Method for separating trivalent americium from trivalent curium |
| 03/10/2005 | WO2005021639A1 Treatment of aqueous compositions containing contaminants |
| 03/10/2005 | US20050053889 Method and apparatus for heating a slurry to a predetermined temperature |
| 03/10/2005 | CA2537603A1 Treatment of aqueous compositions containing contaminants |
| 03/10/2005 | CA2480755A1 Purification of ammonium metallate solutions |
| 03/09/2005 | EP1512774A1 A method and apparatus for the electrodissolution of elements |
| 03/09/2005 | EP1511869A1 A process for recovery of high purity uranium from fertilizer grade weak phosphoric acid |
| 03/08/2005 | US6863873 Process to produce simonkolleite, zinc oxide and zinc hydroxide |
| 03/03/2005 | WO2005019500A1 Method of recovery of metals from etching solutions |
| 03/03/2005 | WO2004101834A3 Treatment of base metal concentrate by a two-step bioleaching process |
| 03/03/2005 | US20050048907 Air distributor for a bioleaching system |
| 03/03/2005 | US20050044991 Detoxification removal by reduction, alkylation or carbonylation; adding carboxylic acid and exposing to ultraviolet light |
| 03/03/2005 | US20050044990 Recovery of copper from chalcopyrite |
| 03/03/2005 | CA2439436A1 Treatment of aqueous compositions containing contaminants |
| 03/02/2005 | EP1509628A1 Method for refining concentrate containing precious metals |
| 03/02/2005 | CN1587423A Method for recovering manganese from low content manganese carbonate raw ore |
| 03/02/2005 | CN1191381C Method for preparing nickel powder |
| 03/02/2005 | CN1191380C Method for extracting indium concentrate form indium and tin oxide waste |
| 03/01/2005 | US6861037 Method of removal of impurities from gold concentrate containing sulfides |
| 03/01/2005 | US6860919 Recovery of precious metal from sulphide minerals by bioleaching |
| 02/24/2005 | WO2005017215A1 Improved thiosulphate leach process |
| 02/24/2005 | US20050042156 Using an etching solution of ferric chloride to etch nickel and/or copper, placing iron particles in the spent etching solution to precipitate a metal powder of nickel and/or copper; regeneration of remaining etching solution; prevents sludge waste |
| 02/24/2005 | US20050040108 Metal ion recovery |
| 02/24/2005 | CA2536138A1 Improved thiosulphate leach process |
| 02/23/2005 | EP1507878A1 Chloride assisted hydrometallurgical extraction of metals |
| 02/23/2005 | CN1584072A Pressurizer self-catalytic selective leaching-out method for ferric zinc sulfide refining mine |
| 02/23/2005 | CN1190508C Two-section bacterial oxidation process to extract gold |
| 02/17/2005 | WO2004106233A3 A process for recovering phosphorus from phosphorous production sludge |
| 02/17/2005 | US20050036930 coating pyrites, marcasites, galenas, sphalerites or arsenopyrites, with lipid such as phospholipids, sphingolipids or glycolipids; protective coatings; pollution control |
| 02/16/2005 | CN1580298A New process for scale production of electrolytic metal zinc using zinc suboxide |
| 02/16/2005 | CN1189578C Production of zinc oxide from complex sulfide concentrates using chloride processing |
| 02/15/2005 | US6855527 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 02/15/2005 | US6855259 Process for reducing the passive layer from the surface of a metal |
| 02/15/2005 | US6855254 Metal recovered from the oil-metal-organic waste slurry using magnetic separator; remaining waste transferred into an anaerobic reactor to react with anaerobic bacteria in a sludge seed; recovering inorganic gases |
| 02/15/2005 | CA2327878C Recycling of spent pot linings |
| 02/10/2005 | WO2005012582A1 Improved hydrometallurgical processing of manganese containing materials |
| 02/10/2005 | WO2005012581A2 Methods for improving the recovery of metal leaching agents |
| 02/10/2005 | WO2005011847A1 Metal oxide processing methods and systems |
| 02/10/2005 | US20050031512 Clarifying a first aqueous leach pulp by solid-liquid separation and solvent extraction to obtain a raffinate and a second aqueous leach pulp; diluted separation and extraction of the second pulp; pollution control |
| 02/10/2005 | US20050028838 Cleaning tantalum-containing deposits from process chamber components |
| 02/10/2005 | CA2537274A1 Metal oxide processing methods and systems |
| 02/09/2005 | EP1504129A1 Separation of platinum group metals |
| 02/09/2005 | CN1188197C Method for reducing size of solvent extraction process steps and extracting unit for using in solvent extraction process |
| 02/08/2005 | US6852233 Graft/irradiation polymerization; waste/water treatment |
| 02/08/2005 | CA2138618C Method of recovering precious metals |
| 02/03/2005 | WO2005010221A1 Method and apparatus for controlling metal separation |
| 02/03/2005 | WO2005010220A1 Highly pure hafnium material, target thin film comprising the same and method for producing highly pure hafnium |
| 02/03/2005 | WO2005010219A1 Method and apparatus for processing metalline sludge |
| 02/03/2005 | WO2005010086A2 Immobilization methods for organic molecules telomers and polymers on solid substrates |
| 02/03/2005 | US20050025687 Treatment of a wide range of titanium compounds |
| 02/03/2005 | US20050022629 Pyrite is removed from leaching residue by pyrolyzing the residue at 550 degrees C. or higher in a non-oxidative atmosphere to produce calcined ore containing pyrrhotite, precious metals and gangue; and re-leaching the calcined ore in an acidic, aqueous solution |
| 02/03/2005 | CA2532578A1 Method and apparatus for processing metalline sludge |
| 02/03/2005 | CA2531772A1 Method and apparatus for controlling metal separation |
| 02/02/2005 | EP1501952A2 Process for extracting platinum group metals |
| 02/02/2005 | CN1575346A Method for purifying the solution in the hydrometallurgical processing of copper |
| 02/02/2005 | CN1187460C Process to recover metal by alkaline leaching |
| 02/02/2005 | CN1187269C Improved acid-alkali production process of airconium oxychloride |
| 02/02/2005 | CN1187124C Ore separating method for low-grade oxide gold ore |
| 02/01/2005 | CA2166407C Method of extracting fluorine from minerals or mineral species |
| 01/27/2005 | WO2005007904A1 Process for the high yield recovery of lead from spent lead-acid batteries with reduced associated production of slag and gaseous emissions |
| 01/27/2005 | WO2005007901A1 Method for processing sulfide ores containing precious metals |
| 01/27/2005 | WO2005007900A1 A process for upgrading an ore or concentrate |
| 01/27/2005 | US20050019247 Production of pure molybdenum oxide from low grade molybdenite concentrates |
| 01/27/2005 | CA2533024A1 A process for upgrading an ore or concentrate |
| 01/27/2005 | CA2530355A1 Method for processing sulfide ores containing precious metals |
| 01/26/2005 | EP1499751A1 Atmospheric pressure leach process for lateritic nickel ore |
| 01/26/2005 | EP0986432B1 Method and system for selective removal of contamination from gas flows |
| 01/26/2005 | CN2673881Y Steam heating type reaction still |
| 01/26/2005 | CN1571853A Combination method for processing zinc silicate concentrate or mine and zinc sulphide calcined concentrate |
| 01/26/2005 | CN1571852A Zinc recovery process |
| 01/26/2005 | CN1570161A High concentration sodium tungstate solution ion exchange process |
| 01/26/2005 | CN1570160A Scheelite disassembling method |
| 01/26/2005 | CN1186466C Method for extracting gold and silver from indissoluble gold and silver concentrate |
| 01/25/2005 | US6846346 Sulfatization process for metal extraction from sulfide ores |
| 01/25/2005 | CA2136703C Apparatus for dissolving zinc by means of acid-containing liquid electrolytes |
| 01/20/2005 | WO2005005672A1 Oxidative leach process |
| 01/20/2005 | WO2005005671A1 Process for recovery of nickel and cobalt by heap leaching of low grade nickel or cobalt containing material |
| 01/20/2005 | US20050013925 Immobilization methods for organic molecules telomers and polymers on solid substrates |
| 01/20/2005 | CA2532999A1 Oxidative leach process |
| 01/20/2005 | CA2532144A1 Process for recovery of nickel and cobalt by heap leaching of low grade nickel or cobalt containing material |
| 01/19/2005 | EP1497474A1 Method for the purification of copper chloride solution |
| 01/19/2005 | EP1497473A1 Method for the recovery of gold |
| 01/19/2005 | EP1434893A4 Zinc recovery process |
| 01/19/2005 | CN1566378A Biological heap leaching process for cobaltous nickelous sulfide ore containing arsenic |
| 01/19/2005 | CN1566377A Combined heap leaching process for copper ore |
| 01/19/2005 | CN1565975A Technological process for preparing submicron alumina using improved salting out method |
| 01/19/2005 | CN1185367C Regeneration method for etching waste liquid containing iron chloride |
| 01/18/2005 | US6843976 Reduction of zinc oxide from complex sulfide concentrates using chloride processing |
| 01/18/2005 | US6843970 Process for recovering metal values by dissolving them in a sulfuric acid solution containing a carbon source and a reducing agent |
| 01/18/2005 | US6843923 Compositions for removing metal ions from aqueous process solutions and methods of use thereof |
| 01/18/2005 | US6843917 Method for separating in an aqueous medium lanthanides and/or actinides by combined complexing-nanofiltration, and novel complexing agents therefor |
| 01/13/2005 | US20050009170 Preparation of metal nanoparticles in plants |
| 01/13/2005 | US20050006247 Chloride melt process for the separation and recovery of zinc |