| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 03/28/2002 | WO2002024966A1 Recovery of nickel and cobalt values from a sulfidic flotation concentrate by chloride assisted oxidative pressure leaching in sulfuric acid |
| 03/28/2002 | WO2001089654A3 Acid stable membranes for nanofiltration |
| 03/28/2002 | US20020037245 Method for segregating metals and minerals from one another by leaching |
| 03/27/2002 | EP1191113A1 Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material |
| 03/27/2002 | EP1190105A1 Recovery of noble metals by lixiviation with thiourea controlled acidic solution |
| 03/27/2002 | CN1341760A Wet zinc-smelting process |
| 03/27/2002 | CN1341759A Process for extracting vanadium |
| 03/26/2002 | CA2356050C Process for the solvent extraction of nickel and cobalt values in the presence of magnesium ions from a solution |
| 03/26/2002 | CA2356048C Process for the recovery of nickel and/or cobalt from a concentrate |
| 03/26/2002 | CA2077453C Process for removing inorganic gels and incompressible solids from acid media |
| 03/26/2002 | CA2007311C Process of removing and concentrating desired ions from solutions thereof |
| 03/21/2002 | WO2002023651A1 A method for recycling spent lithium metal polymer rechargeable batteries and related materials |
| 03/21/2002 | WO2002022899A2 Removal of base metals during cyanide/cip processing of gold and silver ores |
| 03/21/2002 | WO2002022898A1 Separation of cobalt from manganese using organophosphoric acid solvent extraction |
| 03/21/2002 | WO2002022897A1 Recovery of nickel and cobalt from leach solutions |
| 03/21/2002 | WO2002022896A1 Solvent extraction process for recovering nickel and cobalt from leach solutions |
| 03/21/2002 | WO2002022895A1 Method for producing metal or metal compound comprising process of treating with fluorine and adjusted raw material used therein |
| 03/21/2002 | US20020034465 Copper; solvent extraction, electrowinning |
| 03/21/2002 | US20020033076 Comminution, slurrying, heating, controlling temperature |
| 03/21/2002 | CA2421970A1 Solvent extraction process for recovering nickel and cobalt from leach solutions |
| 03/20/2002 | EP1007747B1 Method for separating actinides and lanthanides by liquid-liquid extraction using calixarenes |
| 03/20/2002 | CN1081239C Process for the leaching of chalcopyrite |
| 03/14/2002 | WO2002020861A1 Method for extracting gallium contained in alkaline sodium aluminate solutions |
| 03/14/2002 | WO2002020857A1 Method for producing silver having high purity |
| 03/14/2002 | WO2002020855A2 Pressure leaching process for zinc recovery from suphidic ore materials |
| 03/14/2002 | WO2002020451A1 Recovery of metals by incineration of metal containing basic ion exchance resin |
| 03/14/2002 | WO2002020408A1 Method for separating metals such as zirconium and hafnium |
| 03/14/2002 | US20020031463 Adding solid or freshly slurried caustic calcined magnesium oxide to the solution to precipitate nickel and cobalt and minor amount of manganese in solution, maintaining magnesium oxide in solution for prefered time, separating precipitates |
| 03/13/2002 | EP1186677A2 Process for the separation and removal of iron ions from zinc oxide and basic zinc solution |
| 03/13/2002 | EP1185717A1 Oxidative pressure leach recovery of precious metals using halide ions |
| 03/13/2002 | CN1339619A Method for removing bismuth and antiomny from silver electrolyte |
| 03/13/2002 | CA2319285A1 A method for neutralizing and recycling spent lithium metal polymer rechargeable batteries |
| 03/12/2002 | US6355175 Method for separating and isolating precious metals from non precious metals dissolved in solutions |
| 03/12/2002 | US6355155 Method and a device for recovering metals comprising dissolving, concentrating and electrowinning means with rotatable cathode |
| 03/12/2002 | CA2294176C Nozzle for low pressure flash tanks for ore slurry |
| 03/08/2002 | CA2357230A1 Process for separation and removal of iron ions from zinc oxide and basic zinc solution |
| 03/07/2002 | WO2001083835A3 Gold recovery process with hydrochloric acid lixiviant |
| 03/07/2002 | US20020026965 For producing components of sputtering targets, capacitor cans, resistive film layers, wire |
| 03/06/2002 | EP1183400A1 Method for separating in an aqueous medium lanthanides and/or actinides by combined complexing-nanofiltration, and novel complexing agents therefor |
| 03/06/2002 | EP1019555B1 Detection and extraction of an ion in a solution, particularly uranium ion |
| 03/06/2002 | EP0914482B1 Method and apparatus for back-extracting metal chelates |
| 03/06/2002 | CN1338526A Process for preparing low-Pb low-Mg mixed rare-earth metal by alkali method |
| 03/05/2002 | US6352675 Adding low molecular weight dithiocarbamate to bayer liquid; complexing with zinc; settling, precipitation, separation |
| 02/28/2002 | WO2002016660A1 Reduction method using palladium-loaded biological cell as catalyst |
| 02/28/2002 | WO2002016262A2 Slurry treatment |
| 02/28/2002 | WO2001073144A3 Solvent extraction process for the separation of cobalt from nickel in aqueous sulphate-containing solutions |
| 02/28/2002 | WO2001066808A3 Process for organic acid bioleaching of nickel ore |
| 02/28/2002 | US20020023870 Apparatus for recovering a specific ingredient in sea water |
| 02/27/2002 | EP1042518B1 Oxidising elutriation of contaminated sludge containing iron with separation of zinc and lead |
| 02/26/2002 | US6350420 Hydrometallurgy process with aqueous pulps of laterite, nickeliferous oxide or cobaltiferous oxide |
| 02/26/2002 | US6350419 Supported liquid membrane/ strip dispersion for removal of metals |
| 02/26/2002 | US6350354 Hydrometallurgical process |
| 02/21/2002 | WO2002014221A1 Process and apparatus for post-treatment of iron oxide |
| 02/20/2002 | CN1079439C Process for cyanogen-free lixiviating of gold from gold-contained substances |
| 02/19/2002 | US6348113 High purity tantalum, products containing the same, and methods of making the same |
| 02/14/2002 | WO2002012574A1 Dust control |
| 02/13/2002 | EP1179605A1 Method of recovering sulfur from leach residues of sulfidic ore processing using distillation and condensation |
| 02/13/2002 | EP1179604A2 Method of extracting metals from minerals by bioleaching |
| 02/13/2002 | EP1179367A1 Chelate-forming porous hollow fiber membrane and method for the recovery of germanium oxide with the same |
| 02/13/2002 | EP0871525B1 Liquid medium extraction purification method |
| 02/13/2002 | CN2476561Y Difficult immersion aurin powder box-type static bio-oxidation device |
| 02/12/2002 | CA2232935C A method for the treatment of bismuth-containing sulphide ores or concentrates of such ores |
| 02/10/2002 | CA2327532A1 Method of extraction of metals from minerals |
| 02/06/2002 | EP1036056B1 Process to separate rhodium from an organic mixture |
| 02/06/2002 | CN1334348A Agitator bath for pre-treating refractory As-containing gold ore by impregnating in strong alkali solution |
| 02/05/2002 | US6344068 Process for recovering gold from thiosulfate leach solutions and slurries with ion exchange resin |
| 02/05/2002 | CA2155051C Nickel recovery |
| 01/31/2002 | WO2002008572A2 Electrochemical device for collecting mercury or other heavy metal in mining sites |
| 01/31/2002 | WO2002008477A1 Method for recovering nickel and cobalt from laterite ores |
| 01/31/2002 | WO2002008475A2 Method for recovery of copper from sulfidic ore materials using super-fine grinding and medium temperature pressure leaching |
| 01/31/2002 | WO2002008474A2 Processing elemental sulfur-bearing materials using high temperature pressure leaching for sulfuric acid production and metal recovery |
| 01/31/2002 | WO2002008125A2 Method for recovering copper from sulfide ore materials using high temperature pressure leaching, solvent extraction and electrowinning |
| 01/31/2002 | US20020012621 Process for the recovery of nickel and / or cobalt from a concentrate |
| 01/31/2002 | US20020012620 Bacterial leaching of copper and zinc without iron leaching |
| 01/30/2002 | CN1333838A High purity tantalum and products containing the same like sputter targets |
| 01/30/2002 | CN1333382A Method for producing active mineral liquid from granite |
| 01/29/2002 | US6342634 Calixarenes and their use for sequestration of metals |
| 01/29/2002 | US6342189 Method for total precipitation of valuable metals from an acid leaching solution |
| 01/24/2002 | WO2002006541A2 Production of zinc oxide from acid soluble ore using precipitation method |
| 01/24/2002 | WO2002006540A2 Method for extracting and separating metals using bacteria |
| 01/24/2002 | US20020009409 Process for the recovery of soda ash |
| 01/24/2002 | US20020009402 Method of producing an active mineral liquid from granite |
| 01/24/2002 | CA2506780A1 Recovery of cadmium from zinc-containing acid soluble ore using precipitation method |
| 01/23/2002 | CN1332809A Polymers with ligands bound thereto for metal extractions in liquid carbon dioxide |
| 01/23/2002 | CN1078265C Method for producing nickel and iron compound by using waste corrosive liquid containing nickel and iron chloride series |
| 01/22/2002 | US6340450 Method for leaching zinc concentrate in atmospheric conditions |
| 01/22/2002 | CA2202289C Recovery of zinc from sulphidic concentrates |
| 01/17/2002 | WO2002004707A1 Surface treating agent for metal member |
| 01/17/2002 | WO2002004386A2 Alkoxylated tertiary and quaternary amine surfactants |
| 01/17/2002 | US20020006370 Using sulfuric acid; high temperature, high pressure |
| 01/16/2002 | EP1171641A1 Method for treating precious metal bearing minerals |
| 01/16/2002 | CN1331760A Method for extracting anions of IVB to VIII metals using alkyl-substituted 1,3-diaminopropanes |
| 01/16/2002 | CN1331759A Bio-oxidation process and appts. |
| 01/16/2002 | CN1077803C 流体萃取 Fluid Extraction |
| 01/15/2002 | US6338748 Hydrometallurgical method for recovery of zinc from electric arc furnace dust |
| 01/10/2002 | WO2002002833A2 Preparation of pure ferric chloride from hydrochloric acid solutions by solvent extraction |
| 01/10/2002 | WO2002002832A1 Heap leach bio oxidization |
| 01/10/2002 | US20020004023 Copper sulfide ore is pressure oxidized in presence of halide and sulfate in acid solution producing copper sulfate which is then solvent extracted |
| 01/10/2002 | US20020003323 Air is bubbled through mineral slurries; volatile precious metals saturate air and are removed via scrubbing with sodium sulfite or thiosulfate |
| 01/10/2002 | US20020003110 Fibrous system for continuiusly capturing metals from an aqueous stream |