| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 06/20/2002 | WO2002048036A1 Extraction of silica and magnesium compounds from olivine |
| 06/20/2002 | WO2002004386A3 Alkoxylated tertiary and quaternary amine surfactants |
| 06/20/2002 | US20020074265 Method and equipment for separating gold particles |
| 06/19/2002 | CN1354266A Process for recovering copper and nickel from their metal mixture |
| 06/19/2002 | CN1086424C Process for producing rare-earth with various kinds of pureness specifications by separation |
| 06/18/2002 | US6406676 Hydrometallurgy with iron and arsenic ions, acidity, precipitation and oxidation |
| 06/18/2002 | US6406675 Method for reducing cyanide consumption during processing of gold and silver ores to remove base metals |
| 06/13/2002 | WO2002046483A2 Silver stain removal from dna detection chips by cyanide etching or sonication |
| 06/13/2002 | WO2002046481A1 Method for the hydrolytic precitpitation of iron |
| 06/13/2002 | US20020070171 Adding selective capturing agent comprising cyclic compound capable of forming complex with metal to an aqueous solution; bringing solution into contact with an ion exchange solid phase so as to transport desired metals to solid phase |
| 06/12/2002 | EP0782577B1 Asymmetric ligands useful for transition metal catalyzed bond forming reactions and epoxide reactions therewith |
| 06/12/2002 | CN1086206C Anti micelle method of solvent extraction for preparing superfine powder of metal oxide and use thereof |
| 06/11/2002 | US6402807 Method for wet smelting of iron family metal bearing ores |
| 06/06/2002 | WO2002008572A3 Electrochemical device for collecting mercury or other heavy metal in mining sites |
| 06/06/2002 | WO2002008474A3 Processing elemental sulfur-bearing materials using high temperature pressure leaching for sulfuric acid production and metal recovery |
| 06/05/2002 | CN1352308A Process for extracting nickel from nickel sulfide material with low copper content |
| 05/30/2002 | WO2002042505A1 Method for loparite concentrate processing |
| 05/30/2002 | WO2002042504A2 Bioproduct production during oxidisation of metal sulphide minerals by means of microorganisms |
| 05/30/2002 | WO2002042503A1 Recovery of precious metals from carbonaceous refractory ores |
| 05/30/2002 | US20020062716 Introducing a feed of sulfide mineral in particulate form into a reactor, introducing oxygen gas to contact with slurry and oxidize mineral to form metal value; agitation |
| 05/29/2002 | CN1351673A Improved method for heap leaching of chalocopyrite |
| 05/29/2002 | CN1351521A Chelate-forming porous hollow fiber membrane and method for the recovery of germanium oxide with the same |
| 05/29/2002 | CN1351180A Microbe-catalytic oxidization-reduction compling process for extracting valuable metals from manganese oxide ore |
| 05/29/2002 | CN1085736C Molybdenum removing technology in tungstem smelting process |
| 05/28/2002 | US6395242 Production of zinc oxide from complex sulfide concentrates using chloride processing |
| 05/28/2002 | US6395063 Gold sulfide from sulfide mineral, slurrying, oxidation and agitation |
| 05/28/2002 | US6395062 Process for recovery of metals from metal-containing ores |
| 05/28/2002 | US6395061 Nickel and magnesium, mixing with microorganism to produce organic acids |
| 05/23/2002 | DE10055550A1 Process for leaching lateritic ore containing nickel oxide and/or cobalt oxide comprises forming a pumpable suspension made from water and crushed ore, feeding through a preheating tube |
| 05/22/2002 | EP1206584A2 Solvent extraction process for the separation of cobalt from nickel in aqueous sulphate-containing solutions |
| 05/22/2002 | CN1350473A A method for extracting copper from an aqueous solution |
| 05/22/2002 | CN1350058A Method of breeding strain for soaking ore |
| 05/21/2002 | US6391270 Method for removing manganese from acidic sulfate solutions |
| 05/21/2002 | US6391188 Processes and apparatus for recovery and removal of copper from fluids |
| 05/21/2002 | US6391089 Acid leaching of nickel laterite ores for the extraction of their nickel and cobalt values |
| 05/21/2002 | CA2360608A1 Recovery of precious metals from metal alloys produced aluminothermically from base metal smelter slag |
| 05/21/2002 | CA2224148C Process for making shaped copper articles |
| 05/16/2002 | WO2002038819A2 Process for regeneration of spent acid halide leach solutions |
| 05/15/2002 | EP1205564A2 Method of recovering a copper and/or a manganese component from a particulate gas cleaning agent |
| 05/15/2002 | EP1204774A1 Composition and process for the solvent extraction of metals using aldoxime or ketoxime extractants |
| 05/15/2002 | CN1084803C Process for making copper metal powder, copper oxides and copper foil |
| 05/14/2002 | US6387243 Contactors cationic exchange resin with solvent; circulationdirect current |
| 05/14/2002 | US6387240 Method for the removal of sulfur in the nickel leaching process |
| 05/14/2002 | US6387239 Contacting ore with microorganism which oxidizes sulfur; leaching; separation |
| 05/14/2002 | US6387155 Method for recovering metal values from concentrates of sulfide minerals |
| 05/10/2002 | WO2002036839A1 Method and installation of metal retrieving from used chroming solutions |
| 05/10/2002 | WO2002036838A2 Direct atmospheric leaching of highly-serpentinized saprolitic nickel laterite ores with sulphuric acid |
| 05/10/2002 | WO2002036837A1 Chromatographic method of separating ruthenium from platinum group metals |
| 05/10/2002 | WO2002036493A1 Method of separating red mud containing goethite |
| 05/09/2002 | US20020054842 Process for the recovery of soda ash |
| 05/09/2002 | US20020053260 Process for extraction of metals |
| 05/09/2002 | CA2360704A1 Process of leaching a lateritic ore for preparing metal extraction |
| 05/08/2002 | CN1348505A Sulphidisation of sulphide ores for hydrometallurgical extraction of copper and other metals |
| 05/08/2002 | CN1084391C Method for extracting gold from hard processing aurin ore |
| 05/07/2002 | US6383460 Subjecting the concentrate containing nickel and cobalt hydroxide to a leaching stage with an ammonium solution to produce a leach solution containing nickel or cobalt values and a residue, and controlling the concentration of metals |
| 05/07/2002 | US6383458 Biooxidation process for recovery of metal values from sulfur-containing ore materials |
| 05/07/2002 | US6383282 Dispersion in water and water soluble polymer; separation of minerals |
| 05/07/2002 | US6383255 Method for recovering the valuable metal content of a sulphuric acid leaching solution |
| 05/07/2002 | CA2176147C Biooxidation of refractory sulfide ores |
| 05/02/2002 | WO2001094650A3 Process for the recovery of natural nanoclusters of metals and other elements and the nanoclusters isolated thereby |
| 05/02/2002 | EP1200633A1 $i(THLASPI CAERULESCENS) SUBSPECIES FOR CADMIUM AND ZINC RECOVERY |
| 05/02/2002 | EP1200391A1 Calixarene acetamido derivatives, preparation and use thereof for extracting strontium |
| 04/30/2002 | US6379919 Method for isolating thiocyanate resistant bacteria |
| 04/30/2002 | US6379637 Direct atmospheric leaching of highly-serpentinized saprolitic nickel laterite ores with sulphuric acid |
| 04/30/2002 | US6379636 Method for leaching nickeliferous laterite ores |
| 04/25/2002 | WO2002033135A1 Precious metal scavenging from a liquid medium with a functionalised polymer fiber |
| 04/25/2002 | WO2002033134A2 Basic treatment of ores for the recovery of metals therefrom |
| 04/25/2002 | WO2001080251A3 A method for isolating and purifying ?90y from 90¿strontium in multi-curie quantities |
| 04/24/2002 | CN1345981A Process for enriching germanium and silver in zinc smelting process of heat acid leaching-ferro-alum method |
| 04/23/2002 | US6375850 Basification of citric acid solution; filration; acidification; filtration; precipitation; discharging, circulation |
| 04/23/2002 | US6375713 Improving recovery of copper and reducing raw material costs, sulfuric acid leaching |
| 04/23/2002 | US6375703 Method of synthesizing nickel fibers and the nickel fibers so prepared |
| 04/18/2002 | WO2001075184A3 Heap leaching of nickel containing ore with sulfuric acid |
| 04/18/2002 | US20020044908 Method for liquid chromate ion and oxy-metal ions removal and stabilization |
| 04/18/2002 | US20020044899 Controlled, super-fine grinding so particles react completely during leaching; extraction of copper from copper sulfide ores and concentrates |
| 04/17/2002 | CN1082826C Solvent extraction for metalic matter |
| 04/17/2002 | CN1082825C Fluid extraction of metal and/or metalloid |
| 04/16/2002 | US6372872 Detection and extraction of uranium and other ions in a solution |
| 04/16/2002 | CA2169140C Gold recovery from refractory carbonaceous ores by pressure oxidation and thiosulfate leaching |
| 04/16/2002 | CA2025516C Selective leach for oxides and therein-contained metals |
| 04/11/2002 | WO2002029124A2 Heat transfer in heap leaching of sulphide ores |
| 04/11/2002 | US20020041840 Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores |
| 04/10/2002 | EP1194612A1 Electrowinning cell incorporating metal ion filtration apparatus |
| 04/10/2002 | EP1194259A1 Recovery method |
| 04/10/2002 | CN1082383C Process for separating cesium from industrial streams contg. other alkali metals using poly(hydroxyarylene) polymeric resins |
| 04/09/2002 | US6368381 Autoclave using agitator and sparge tube to provide high oxygen transfer rate to metal-containing solutions |
| 04/09/2002 | CA2204112C Processes for separating cesium from industrial streams containing other alkali metals using poly(hydroxyarylene) polymeric resins |
| 04/09/2002 | CA2203258C Method for heap biooxidation of ore |
| 04/04/2002 | WO2002027045A1 Method and apparatus for chemical processing |
| 04/04/2002 | WO2001098548A3 Chromatographic interseparation of platinum group metals |
| 04/03/2002 | EP1019552B1 Method for separating trivalent actinides from at least one trivalent lanthanide by means of (bis)aryldithiophosphonic acid as organophosphate as synergist |
| 04/03/2002 | EP0789608B1 Processes for separating cesium from industrial streams containing other alkali metals using poly(hydroxyarylene) polymeric resins |
| 04/03/2002 | CN1342786A Process for preparing high-purity gold by electrolyzing extracted gold-contained organic phase |
| 04/03/2002 | CN1342779A Process for recovering metals Pt, Re and Al from waste reforming catalyst |
| 04/03/2002 | CN1082031C Method of biotreatment for solid materials in nonstirred surface bioreactor |
| 04/02/2002 | US6365121 Thermal decomposition of metal chloride; vaporization; condensation |
| 04/02/2002 | US6365049 Chromatography separation |
| 04/02/2002 | US6365042 Sequestering metals |
| 04/02/2002 | US6364931 Hydrochloric acid solution of actual feedstocks; no prior separation required; ion-exchange gel chromatography |
| 04/02/2002 | CA2191243C Fluid extraction |