| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
|---|
| 03/14/2001 | EP1082728A1 Method for reducing the level of radioactivity of a metal part |
| 03/14/2001 | CN1063229C Method for recovering nickel hydrometallurgically from two different nickel mattes |
| 03/13/2001 | US6200545 Cyanide recovery by solvent extraction |
| 03/13/2001 | US6200521 Waste recovery system |
| 03/13/2001 | US6200364 Process for eluting precious metals from activated carbon |
| 03/08/2001 | WO2001016386A1 Reclamation of metals like uranium from contaminated solids such as incinerator ash by fluorination and leaching |
| 03/08/2001 | WO2001016385A1 Base metal recovery from a tailings dump by bacterial oxidation |
| 03/08/2001 | WO2001016384A1 Sulfatisation process for metal extraction from sulfide ores |
| 03/08/2001 | WO2001016383A2 Process and solution |
| 03/07/2001 | EP1080239A1 Process to recover molybdenum and vanadium metals from spent catalyst by alkaline leaching |
| 03/07/2001 | EP1080238A1 Method for processing residues containing at least one non-ferrous metal and/or compounds thereof |
| 03/06/2001 | US6197214 Ammonium thiosulfate complex of gold or silver and an amine |
| 03/03/2001 | CA2317289A1 A modular solvent extraction plant and method for making and using such a plant |
| 03/01/2001 | WO2001014604A1 Use of anti-degradation agents for oxime extractants in the solvent extraction of metals |
| 02/28/2001 | CN1285416A Technology and equipment for purifying and removing iron by cupric sulfate solution catalyzing air oxidation method |
| 02/27/2001 | US6193881 In-situ chemical reactor for recovery of metals or purification of salts |
| 02/27/2001 | CA2017079C The leaching of finely milled materials |
| 02/22/2001 | WO2001012865A1 Method of removal of impurities from gold concentrate containing sulfides |
| 02/22/2001 | WO2001012589A1 Method for separating copper from iron |
| 02/22/2001 | WO2001012586A1 Calixarene acetamido derivatives, preparation and use thereof for extracting strontium |
| 02/22/2001 | WO2001012288A1 Nickel recovery process and compositions for use therein |
| 02/22/2001 | DE19939697A1 Processing organic extract phases from metal extraction comprises using ultra-filtration membranes to separate phases into low-loaded permeate stream and high-loaded retentate stream |
| 02/22/2001 | CA2381691A1 Method for separating copper from iron |
| 02/22/2001 | CA2381679A1 Method of removal of impurities from gold concentrate containing sulfides |
| 02/21/2001 | EP0809628B1 Amphiphilic compounds with at least two hydrophilic and at least two hydrophobic groups based on dicarboxylic acid diamides |
| 02/14/2001 | CN1062022C Method for removing copper from melted nickle and cobalt |
| 02/14/2001 | CN1062021C Method for reclaiming metal ion from solvent contg metal ion |
| 02/13/2001 | US6187911 Exposing material comprising metal and/or metalloid to supercritical fluid solvent and chelating agent to form chelates, varying solvating power of fluid to selectively separate metal or metalloid chelate from other materials |
| 02/13/2001 | CA2315480A1 Process for removing metals from a sorbent |
| 02/13/2001 | CA2160488C Recovery of metals from sulphidic material |
| 02/10/2001 | CA2314803A1 Immobilized bioreactor system for sulphidic minerals and other particulate solids |
| 02/08/2001 | WO2001009399A1 Silver recovery from acidic brine solution by cementation |
| 02/08/2001 | WO2001009398A1 Apparatus for heating flowing material containing solids |
| 02/08/2001 | CA2380533A1 Apparatus for heating flowing material containing solids |
| 02/07/2001 | EP1074635A1 Separation of platinum group metals |
| 02/06/2001 | US6183706 Autoclave having an agitator with an aerating impeller for high oxygen transfer rate to metal-containing slurries and method of use |
| 02/06/2001 | US6183545 Aqueous solutions for obtaining metals by reductive deposition |
| 01/31/2001 | EP1071828A1 Processing route for direct production of mixed rare earth metal oxides by selective extraction |
| 01/31/2001 | EP1028845A4 System for extracting soluble heavy metals from liquid solutions |
| 01/31/2001 | EP0980442B1 In-situ reactor for recovering metals and energy |
| 01/31/2001 | CN1281903A Oxide ore wet production process of ZnSo4.7H2O |
| 01/31/2001 | CN1061383C Method and apparatus for re-extracting metal chelate |
| 01/31/2001 | CN1061382C Method for treatment of mismuth-containing sulphite ores or concentrates of such ore |
| 01/30/2001 | US6180072 Process to recover metals from spent catalyst |
| 01/30/2001 | US6180071 Process for recovering rhodium catalyst |
| 01/25/2001 | WO2001005732A1 Removal of antimony compounds from liquids |
| 01/25/2001 | WO2000065111B1 Oxidative pressure leach recovery of precious metals using halide ions |
| 01/24/2001 | EP1070150A1 Method for treating steel works dust by wet process |
| 01/24/2001 | CN1060966C Autocontrol method for fractional extraction process and its device |
| 01/23/2001 | US6177055 Water solutions with copper stripping solution whereby copper values are stripped from the organic phase into the aqueous acidic stripping solution; |
| 01/23/2001 | US6177015 Process for reducing the concentration of dissolved metals and metalloids in an aqueous solution |
| 01/23/2001 | US6176997 Apparatus and method for copper extraction by in-situ electrolysis in heap-leaching of ores |
| 01/23/2001 | US6176895 Fluoracrylate copolymer |
| 01/23/2001 | US6176608 Method and apparatus for conducting the two solutions of liquid-liquid extraction, mixed into dispersion, in a controlled fashion into the separation part |
| 01/18/2001 | WO2001004366A1 Stripping lanthanide-loaded phosphonic/phosphinic extractant solutions in the presence of phosphine oxide |
| 01/18/2001 | WO2001004097A2 Cyclic delocalized cations connected by spacer groups |
| 01/18/2001 | WO2000061824A3 Process for recovering particles suspended in an aqueous slime |
| 01/17/2001 | CN1280557A Process to separate rhodium from an organic mixture |
| 01/17/2001 | CN1280202A Process of extracting organic phase to wash away chlorine radical and counter extracting organic phase to wash away salphate radical with cuprammonium solution |
| 01/17/2001 | CN1060819C Process for production of pure solutions of tungsten and molybdenum |
| 01/17/2001 | CN1060817C Electrolytic separating process for ilmenite |
| 01/17/2001 | CN1060816C Method for comprehensive uses by dissolving chromium residue to eliminate toxicity |
| 01/16/2001 | US6175051 Deactivation of metal liquid coolants used in nuclear reactor systems |
| 01/16/2001 | US6174503 Nuclear wastes treatment, especially wastes with a high concentration of competing alkali metal cations |
| 01/16/2001 | CA2171049C Apparatus and method for acidic leaching of lateritic ores |
| 01/10/2001 | CN1060529C Pressure oxidation pretreatment process of insoluble gold ore |
| 01/09/2001 | US6171564 Process for extraction of metal from an ore or concentrate containing nickel and/or cobalt |
| 01/09/2001 | US6171563 Supported liquid membrane process for chromium removal and recovery |
| 01/09/2001 | US6171562 Process for the extraction and elimination of deleterious material from natural manganese dioxide and concentrate of manganese dioxide obtained by said process |
| 01/09/2001 | CA2277417A1 Stripping lanthanide-loaded solutions |
| 01/09/2001 | CA2037377C Solvent extraction process |
| 01/04/2001 | WO2001000889A1 Composition and process for the solvent extraction of metals using aldoxime or ketoxime extractants |
| 01/04/2001 | DE19928027A1 Verfahren zur Herstellung von Platin A process for the preparation of platinum |
| 01/03/2001 | EP1064411A1 Extraction of valuable metal by acid cyanide leach |
| 01/03/2001 | EP1064223A1 METHOD FOR REPROCESSING WASTE ACID RESULTING FROM TiO 2? PRODUCTION |
| 01/03/2001 | CN1278564A Method and system for recovering and removing copper from fluid |
| 01/03/2001 | CN1060219C Method of producing electrolytic copper from germ soaking of sulfide mineral |
| 01/02/2001 | US6168766 Controlling redox potential |
| 12/27/2000 | EP1063308A2 A method for recovering the valuable metal content of a sulphuric acid leaching solution. |
| 12/27/2000 | EP1063307A2 Method for recovering copper by solvent extraction in alternate steps |
| 12/26/2000 | US6165427 Method for removal of heavy metals from aqueous solutions using sodium di-(n-octyl)phosphinate or sodium di-(n-dodecyl) phosphinate |
| 12/26/2000 | US6165426 Method of purifying liquid products by removing soluble antimony compounds therefrom |
| 12/26/2000 | US6165344 Method for removing copper ions from copper ore using organic extractants |
| 12/21/2000 | WO2000065607B1 Deactivation of metal liquid coolants used in nuclear reactor systems |
| 12/21/2000 | DE19928029A1 Verfahren zum Lösen von Edelmetallen aus edelmetallhaltigen Scheidgütern Method for solving of precious metals from noble metal-containing Scheid goods |
| 12/21/2000 | DE19927784A1 Verfahren zum Lösen von bei in Kontakt mit Halogenwasserstoffsäure Wasserstoff entwickelnde Unedelmetalle aufweisenden und Edelmetalle in metallischer und/oder legierter Form aufweisenden Scheidgütern Having process for dissolving at developing into contact with hydrogen halide acid hydrogen base metals and precious metals having in metallic and / or alloyed form Scheid goods |
| 12/20/2000 | EP1061145A1 Process of producing high purity platinum from a hexachloroplatinate solution |
| 12/20/2000 | EP1061144A1 Method of preparing high purity gold from precious metal bearing nitrate solutions |
| 12/20/2000 | EP1061143A1 Method for solubilizing noble metalls |
| 12/20/2000 | EP1061142A1 Method for dissolving metals |
| 12/20/2000 | EP1061141A1 A method for total precipitation of valuable metals from an acid leaching solution |
| 12/19/2000 | USRE36990 Chemical process for the recovery of metal from an organic complex |
| 12/19/2000 | US6162346 Process for recovery of zinc from sphalerite containing ores or concentrates |
| 12/19/2000 | US6162277 Nickel fine powder and method for preparing the same |
| 12/13/2000 | EP1059361A1 A method of purifying an iron-containing acid leaching solution |
| 12/13/2000 | CN1276370A Process for preparing anticancer compound, and intermediate |
| 12/13/2000 | CN1276343A Process for preparing activated zinc oxide |
| 12/12/2000 | US6159726 Spraying coarse substrates with sulfide mineral concentrate, forming a heap, and bioxidizing the concentrate; faster rate than existing heap processes with low initial capital and operating costs |
| 12/12/2000 | US6159270 Phytoremediation of metals |
| 12/12/2000 | US6158517 Artificial aquifers in hydrologic cells for primary and enhanced oil recoveries, for exploitation of heavy oil, tar sands and gas hydrates |