| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 12/12/2000 | CA2168342C Apparatus and method for recovery of silver |
| 12/07/2000 | WO2000073539A1 Electrowinning cell incorporating metal ion filtration apparatus |
| 12/07/2000 | WO2000073521A1 Method for separating in an aqueous medium lanthanides and/or actinides by combined complexing-nanofiltration, and novel complexing agents therefor |
| 12/06/2000 | CN1275821A Method for recoverying negative electrode material from waste lithium cell |
| 12/06/2000 | CN1275627A Process for extracting cerium by oxydol oxidation method |
| 12/05/2000 | US6156280 Process for removing manganese from organic solutions of oximes and nickel ore treatment process |
| 12/05/2000 | US6156186 Method for removing contaminants from process streams in metal recovery processes |
| 11/30/2000 | WO2000071763A1 An improved method for heap leaching of chalcopyrite |
| 11/30/2000 | DE19924707A1 Verfahren zum Recycling von Kathodenmassen gebrauchter Lithiumbatterien Method for recycling cathode materials used lithium batteries |
| 11/30/2000 | DE19924531A1 Process and assembly to decontaminate soil from metals using single reactor vessel, imparting electrical current to suspension of solids to while mixing or agitating, adding a regeneratable extraction agent,etc. |
| 11/30/2000 | CA2374509A1 An improved method for heap leaching of chalcopyrite |
| 11/29/2000 | EP1056146A1 Procedure for the recycling of cathode masses of used lithium batteries |
| 11/29/2000 | EP1055008A1 Hydrogen-free regeneration of dithiophosphorus metal extractants |
| 11/28/2000 | CA2309773A1 Process for recycling negative-electrode materials from spent lithium batteries |
| 11/23/2000 | WO2000069538A1 A method for extracting copper from an aqueous solution |
| 11/21/2000 | US6149885 Acid extraction of nickel, sodium and ammonium sulfates from crude solution containing impurities, scrubbing resulting extracted phase to remove sodium and ammonium, then treating with second crude sulfate solution to exchange impurities |
| 11/21/2000 | US6149711 Method and apparatus for solar heating and distributing a mining leach solution |
| 11/16/2000 | WO2000068446A1 Recovery of noble metals by lixiviation with thiourea controlled acidic solution |
| 11/16/2000 | WO2000068445A1 Base metal recovery |
| 11/16/2000 | WO2000067942A1 Recovery method |
| 11/16/2000 | WO2000067905A1 Chelate-forming porous hollow fiber membrane and method for the recovery of germanium oxide with the same |
| 11/16/2000 | WO2000039428A3 Artificial aquifers in hydrologic cells for oil recovery |
| 11/16/2000 | CA2373014A1 Recovery of noble metals by lixiviation with thiourea controlled acidic solution |
| 11/16/2000 | CA2373012A1 Base metal recovery |
| 11/16/2000 | CA2368084A1 Recovery method |
| 11/15/2000 | EP0917541B1 Biodegradable complexing agents for heavy metals |
| 11/15/2000 | EP0880726B1 Regeneration of spent fixer solution |
| 11/15/2000 | CN2405636Y Adsorption tank for recovering gold from waste ore pulp from ore-roasting for gold concetrate floatation |
| 11/14/2000 | US6146444 Method for recovering metal value from concentrates of sulfide minerals |
| 11/14/2000 | US6145667 Mineral collector compositions and processes for making and using same |
| 11/14/2000 | US6145244 Methods for enhancing phytoextraction of contaminants from porous media using electrokinetic phenomena |
| 11/08/2000 | EP1050593A1 Two-stage bioleaching of sulphidic materials containing metal values and arsenic |
| 11/08/2000 | CN1272553A New process for recovering metals of indium, iron, silver and tin from high-indium high-iron zinc preparation concentrate |
| 11/07/2000 | US6143260 Method for removing magnesium from brine to yield lithium carbonate |
| 11/07/2000 | US6143259 Oxidising sulphide mineral in the presence of ferric ions to make the valuable metal in the sulphide mineral accessible to extraction and oxidising ferrous ions generated or derived from iron in the mined material with sulfur dioxide and oxygen |
| 11/02/2000 | WO2000065607A1 Deactivation of metal liquid coolants used in nuclear reactor systems |
| 11/02/2000 | WO2000065112A1 Recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions |
| 11/02/2000 | WO2000065111A1 Oxidative pressure leach recovery of precious metals using halide ions |
| 11/02/2000 | WO2000065107A1 Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material |
| 11/02/2000 | CA2367609A1 Recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions |
| 11/01/2000 | CN1271781A Process for preparing gold by reduction of gold-contained chlorated liquid |
| 11/01/2000 | CN1058056C Process of chlorine complexing oxidation method for selective leaching nickel cobalt copper sulfurized ore |
| 10/31/2000 | US6139751 Separating heavy metals from mixture by treating with fructan derivative containing complexing groups selected from xanthates, xanthides and/or dithiocarbamates |
| 10/31/2000 | US6139602 Carbon catalyzed leaching of metal-containing ores |
| 10/31/2000 | CA2206710C Regeneration of dithiophosphorus acid metal extractants |
| 10/25/2000 | CN2402690Y Arsenic-contg. gold ore biological oxidizing cell |
| 10/25/2000 | CN1271392A Chloride assisted hydrometallurgical extraction of nickel and cobalt fro m sulphide or laterite ores |
| 10/19/2000 | WO2000061826A1 Purification of zinc-bearing material solutions containing manganese |
| 10/19/2000 | WO2000061824A2 Process for recovering particles suspended in an aqueous slime |
| 10/19/2000 | WO2000061822A1 Compositions and methods for removing pollutants from contaminated materials |
| 10/19/2000 | CA2368876A1 Process for recovering particles suspended in an aqueous slime |
| 10/18/2000 | EP1044969A2 Processes and intermediates for preparing anti-cancer compounds |
| 10/17/2000 | US6132491 Method and apparatus for dissociating metals from metal compounds extracted into supercritical fluids |
| 10/11/2000 | EP1043408A2 Processes and apparatus for recovery and removal of copper from fluids |
| 10/11/2000 | EP1042518A1 Oxidising elutriation of contaminated sludge containing iron with separation of zinc and lead |
| 10/11/2000 | CN1057344C Chloride assited hydrometallurgical extraction of metal |
| 10/09/2000 | CA2268496A1 Purification of zinc materials |
| 10/04/2000 | CN1268981A Mehtod and apparatus for controllable conducting a solution obtd. from liquid-liquid extraction to a wide settle |
| 10/04/2000 | CN1268580A Noble metal smelting slag wet metallurgical process |
| 10/04/2000 | CN1268579A New process for treating electrolytic anode mud |
| 10/04/2000 | CN1057130C Vanadium pentoxide extracting method from stone coal vanadium ore |
| 10/04/2000 | CN1057069C Wet process for preparing industrial pure antimony sulfide by removing lead, arsenic, selenium, tin and mercury impurities in antimonic ore |
| 10/03/2000 | US6126720 Method for smelting noble metal |
| 10/03/2000 | CA2068982C Process for the separation of cobalt from nickel |
| 09/28/2000 | WO2000056943A1 Purification of cobalt solutions containing iron and manganese with oxidation mixture of s02 and oxygen |
| 09/28/2000 | WO2000056942A1 Process for recovering metal values |
| 09/28/2000 | DE19913550A1 Rare earth oxysulfide powder, used to produce a scintillator ceramic for computer tomography or as a phosphor for x-ray screens, is produced by rare earth oxysulfate reduction |
| 09/28/2000 | CA2366294A1 Methods of purifying cobalt |
| 09/27/2000 | EP1038041A1 A fibrous system including wicking fibers impregnated with extractant for continuously capturing metals from an aqueous stream |
| 09/27/2000 | CN1267740A Molybdenum salt and nickel salt extracting weak-base process from intergrown molybdenum-nickel ore |
| 09/27/2000 | CN1267739A Molybdenum salt and nickel salt extracting dilute-acid process from intergrown molybdenum-nickel ore |
| 09/26/2000 | US6123853 Method for treating waste water used in alkali metal hydroxide manufacturing processes |
| 09/20/2000 | EP1036056A1 Process to separate rhodium from an organic mixture |
| 09/20/2000 | CN1267338A Chloride assisted hydrometallurgical extraction of copper from sulphide ore materials |
| 09/20/2000 | CN1266908A Process for separating metallurgical materials of Zn, Cu, Cd and Pb by wet method and its application |
| 09/20/2000 | CN1056646C Microbe and its application |
| 09/14/2000 | WO2000053820A1 Recovery of nickel and cobalt from ore |
| 09/14/2000 | WO2000053819A1 Method for dissolving a nickel- and cobalt-containing metallised material |
| 09/13/2000 | EP1034136A1 Treatment of a solution containing iron salts |
| 09/12/2000 | US6117209 Hydrometallurgical process for treating alloys and drosses to recover the metal components |
| 09/12/2000 | CA2159686C Gold recovery using controlled oxygen distribution pressure oxidation |
| 09/12/2000 | CA2134264C Process for production of molybdenum-99 and management of waste therefrom |
| 09/06/2000 | EP0832302B1 Chloride assisted hydrometallurgical extraction of nickel and cobalt |
| 09/06/2000 | CN1265635A Continuous non-polluting liquid phase titanium dioxide process |
| 09/06/2000 | CN1056194C Method and apparatus for separating several metal chlorides by electrolysis and extraction |
| 09/05/2000 | US6113868 Process for treating tungstate solutions to reduce molybdenum impurity and other impurity content |
| 09/05/2000 | US6113804 Composition and use of the composition for the extraction of metals from aqueous solution |
| 08/31/2000 | WO2000050655A1 Nickel ore treatment process |
| 08/31/2000 | WO2000050653A1 Method for the chemical precipitation of metallic silver powder via a two solution technique |
| 08/31/2000 | WO2000050651A1 Integrated, closed tank biooxidation/heap processes for leaching refractory sulfide ores |
| 08/31/2000 | WO2000050650A1 Filter-press type electrochemical cell |
| 08/30/2000 | EP1031633A1 Electrochemical cell of the filter press type for the lixiviation of slurries containing valuable metals |
| 08/30/2000 | EP0815270B1 Atmospheric mineral leaching process |
| 08/30/2000 | CN1265160A Fluid extraction of metals of metalloids |
| 08/30/2000 | CN1055972C Method for prodn. of low-magnesium low-zinc mixed rare metal |
| 08/30/2000 | CN1055971C Chloride assisted hydrometallurgical extraction of nickel and cobalt from sulfide minerals |
| 08/29/2000 | US6110433 Process for the recovery of metals from used nickel/metal/rare earth hydride storage batteries |
| 08/29/2000 | US6110377 Placing rh.sup.+ type cation exchange resin in alkaline waste to complex insoluble sodium; separating resin charged with sodium and treating with lime and water; separating concentrated soda solution an using as digestion liquor |
| 08/29/2000 | US6110255 Nozzle for low pressure flash tanks for ore slurry |
| 08/29/2000 | US6110254 Method for chemical precipitation of metallic silver powder via a two solution technique |