| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 01/13/2010 | CN201379987Y Double clarifying chambers with counterflow mixture extraction grooves |
| 01/13/2010 | CN101624650A Microwave irradiation-acid leaching vanadium-recovering process of stone coal containing vanadium |
| 01/13/2010 | CN101624649A Method for leaching vanadium from vanadous stone coal ore with fluosilicic acid and sulphuric acid |
| 01/13/2010 | CN101624648A Reaction system and method for using NOX to circularly catalyze oxygen to oxidize and pretreat refractory gold ore |
| 01/13/2010 | CN100580110C Wet-process metallurgy method for extracting copper from waste composition brass melting furnace slag |
| 01/13/2010 | CN100580109C Method for extracting gold from waste circuit boards |
| 01/13/2010 | CN100580108C Biologic oxidation reactor for refractory auric sulfide ore |
| 01/13/2010 | CN100580107C Method for extracting vanadic anhydride from stone coal vanadium ore |
| 01/12/2010 | US7645372 continuously adding lead aceate to the zinc sulfate solution so that the amount of lead is adjusted to be at least equivalent to the amount of thallium, and adding zinc powder to ZnSO4 solution to precipitate cadmium and thallium; removing thallium; and zinc particle self dissolve forming ZnSO4 |
| 01/12/2010 | CA2617415C Method for thiosulfate leaching of precious metal-containing materials |
| 01/12/2010 | CA2409378C Method for thiosulfate leaching of precious metal-containing materials |
| 01/12/2010 | CA2307500C Method for removing contaminants from process streams in metal recovery processes |
| 01/07/2010 | WO2010001866A1 Process for producing metallic zirconium |
| 01/07/2010 | WO2010001728A1 Method for separating radioactive copper using chelate exchange resin |
| 01/07/2010 | WO2010000029A1 A process for heap leaching of nickeliferous oxidic ores |
| 01/06/2010 | CN101619391A Method for separating and extracting gold from cyanide gold-leaching barren solution |
| 01/06/2010 | CN101619390A Method for reducing arsenic in amine extracted germanium organic phase |
| 01/06/2010 | CN101619389A Method for extracting lead from lead sulfide ore concentrate by HCl-O2-NaCl system |
| 01/06/2010 | CN101619388A Method for restraining generation of manganous dithionate in process of leaching sulfur dioxide gas out of pyrolusite |
| 01/05/2010 | US7641714 Method for recovering metal values from refractory sulfide ore |
| 12/30/2009 | WO2009156662A2 Method for processing and recycling zinc-rich iron metallurgy side products |
| 12/30/2009 | WO2009155652A1 Process for forming high density sulfides |
| 12/30/2009 | WO2009155651A1 Iron precipitation |
| 12/30/2009 | WO2009155634A1 Counter current atmospheric leach process |
| 12/30/2009 | WO2009120373A3 Metal extraction without cyanide |
| 12/30/2009 | CN201372306Y Device for solving blocking problem of zinc calcine feeding debris |
| 12/30/2009 | CN100575508C Method for separating highly-pure rare-earth oxide from yttrium-rich rare earth mine |
| 12/24/2009 | US20090317313 Sulfidisation process and apparatus for enhanced recovery of oxidised and surface oxidised base and precious metal minerals |
| 12/23/2009 | WO2009153409A1 Method for leaching nickel matte in the presence of added copper |
| 12/23/2009 | WO2009152560A1 Saprolite neutralisation of heap leach process |
| 12/23/2009 | CN101608265A Recovering process of associated metal zinc in gold finished ore |
| 12/23/2009 | CN101608264A Waste lead recovering method for lead-acid storage batteries |
| 12/23/2009 | CN101608260A Biological-chemical metallurgy method by jointly utilizing oxidized ore and sulfide ore |
| 12/23/2009 | CN101608259A Method for improving leaching rate of germanium in material containing germanium |
| 12/23/2009 | CN101608258A Method for industrially extracting cobalt, copper and iron by taking cobalt-copper alloy as raw material |
| 12/23/2009 | CN101608257A Technology for far infrared thermocompression decomposition of tungsten mineral raw material |
| 12/23/2009 | CN100572575C Method for smelting low carbon manganese-silicon using artificialness Mn3O4 in sublimation electric furnace |
| 12/23/2009 | CN100572573C Method for recycling copper from clean melt cinder of wet-process zinc metallurgy |
| 12/23/2009 | CN100572570C Dechlorination process from zinc electrolytic solution |
| 12/23/2009 | CN100572569C Method for recovery of zinc by countercurrent leaching |
| 12/23/2009 | CA2728519A1 Method for leaching nickel matte in the presence of added copper |
| 12/22/2009 | US7635534 Simplified process for leaching precious metals from fuel cell membrane electrode assemblies |
| 12/22/2009 | US7635407 Exothermic pressure leach autoclave circuits |
| 12/22/2009 | CA2390359C Method for reduction of nickel |
| 12/22/2009 | CA2390356C A method for the reduction of nickel from an aqueous solution |
| 12/17/2009 | WO2009149590A1 Atmospherically catalyzing and oxidizing method of refractory gold concentrate with high arsenic and high sulfur |
| 12/17/2009 | WO2009149522A1 Rheological method for the hydrometallurgical recovery of base metals from ores |
| 12/17/2009 | WO2009149521A1 Method for the recovery of base metals from ores |
| 12/17/2009 | WO2009089613A9 Liquid and solid effluent treatment process |
| 12/17/2009 | CA2727557A1 Rheological method for the hydrometallurgical recovery of base metals from ores |
| 12/17/2009 | CA2727556A1 Method for the recovery of base metals from ores |
| 12/17/2009 | CA2722494A1 A method for catalytic oxidation of refractory gold concentrate with high contents of sulfur and arsenic under ordinary pressure |
| 12/16/2009 | EP2132345A1 Melt metallurgical method for the production of metal melts, and transition metal-containing charge for use therein |
| 12/16/2009 | CN201361544Y Overflow-type multi-bay autoclave |
| 12/16/2009 | CN101603126A Process for efficiently leaching anode active material of waste lithium battery |
| 12/16/2009 | CN101603125A Method for purification and impurity removal of nickel liquid |
| 12/16/2009 | CN101603124A Method for improving current efficiency of copper electrowinning |
| 12/16/2009 | CN101603123A Method for solid-phase extraction of gold from alkaline cyanide solution through macroporous adsorption resin |
| 12/16/2009 | CN101602519A Process of directly preparing rare-earth compound from extraction separation load organic phase |
| 12/16/2009 | CN100569967C Desulfurization and transformation method for waste lead accumulator regenerative lead |
| 12/16/2009 | CN100569381C Iron-removing concentrating process of potash feldspar |
| 12/15/2009 | CA2450443C Solvent extraction mixture for the purification of base metals |
| 12/10/2009 | WO2009146647A1 Method of extracting te and bismuth oxide and recovering byproduct |
| 12/10/2009 | WO2009146518A1 Magnesium recycling and sulphur recovery in leaching of lateritic nickel ores |
| 12/10/2009 | WO2009146485A1 Multi-stage leaching process |
| 12/10/2009 | CA2752254A1 Magnesium recycling and sulphur recovery in leaching of lateritic nickel ores |
| 12/10/2009 | CA2726655A1 Multi-stage leaching process |
| 12/09/2009 | EP2130947A1 Method of recovering valuable metal from scrap containing conductive oxide |
| 12/09/2009 | CN101600810A Process for recovery of nickel and cobalt from laterite ores using ion exchange resin |
| 12/09/2009 | CN101597769A Normal temperature and pressure quick desorption electrolysis method of gold loaded carbon |
| 12/09/2009 | CN101597699A Ion exchange method for extracting gallium from seed separation mother liquid |
| 12/09/2009 | CN101597698A Method for extracting vanadium by stone coal through acid leaching |
| 12/09/2009 | CN101597697A Clean manufacturing technique of extracting vanadium pentoxide from vanadium-contained stone coal |
| 12/09/2009 | CN101597692A Technological method for extracting indium from zinc oxide generated from waste residue from zinc by hydro-smelting |
| 12/09/2009 | CN101597690A Method for recycling multiple precious metals from anode mud |
| 12/09/2009 | CN101597689A High-efficiency purification process for acid leaching solutions of active substances in waste lithium batteries |
| 12/09/2009 | CN101597688A Method for recovering rare earth from phosphogypsum |
| 12/09/2009 | CN101597687A Method for converting sulphuric-acid rare earth crystallized from phosphogypsum leaching liquid into rare-earth chloride |
| 12/09/2009 | CN100567528C Method for reclaiming precious metal palladium from waste palladium-carbon catalyst |
| 12/09/2009 | CN100567525C Method of treating sulfide ore spontaneous combustion using bacteria leaching out method |
| 12/09/2009 | CN100567524C Process for the treatment of electric and other furnace dusts and residues containing zinc oxides and zinc ferrites |
| 12/09/2009 | CN100567523C Microwave pretreatment method of cobalt-copper-iron alloy for leaching valuable metal |
| 12/03/2009 | WO2009146175A2 Sustainable recovery of metal compounds |
| 12/03/2009 | US20090297412 Solid/liquid reaction process and vessel incorporating buoyant covers |
| 12/03/2009 | US20090293680 Processing of Metal Values from Concentrates |
| 12/02/2009 | CN101591735A Method for recovering zinc metal in leaching residue by combination of ion floatation and wet method |
| 12/02/2009 | CN101591733A Method for jarosite precipitation and deironization by pressure acid leaching of high-iron zinc-sulphide concentrate in kettle |
| 12/02/2009 | CN101591732A Process method using oxygen as oxidant in leaching process of manganese ore |
| 12/02/2009 | CN101591229A N901-S copper extractant |
| 12/02/2009 | CN100564558C Method for synthetically reclaiming iron, vanadium and titanium from vanadium titanium magnet concentrate |
| 12/02/2009 | CN100564554C Method for synchronously reclaiming porcelain clay and rear earth from ionic adsorption type rear earth ore |
| 12/02/2009 | CN100564553C Method for reclaiming nickel and chromium from stainless steel sludge |
| 12/02/2009 | CN100564261C Method for preparing super-fine high-purity neodymia oxide by using Pr-Nd enriched material |
| 12/01/2009 | CA2353002C Heap bioleaching process for the extraction of zinc |
| 12/01/2009 | CA2342513C Use of cupric chloride etchant solution in a solvent extraction electrowinning copper refinery |
| 11/25/2009 | CN101589164A Method and apparatus for collection of indium from etching waste solution containing indium and ferric chloride |
| 11/25/2009 | CN101589163A Method and apparatus for collection of indium from etching waste solution containing indium and ferric chloride |
| 11/25/2009 | CN101586196A Vanadium-extracting process by blank roasting alkali leaching ion exchange method |
| 11/25/2009 | CN101586194A Leaching method for anode and cathode mixed materials of waste nickel-hydrogen battery |
| 11/25/2009 | CN101586193A Leaching method for anode material of waste LiNiO2 battery |