| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 07/11/2007 | CN1325674C Metal antimony purifying method and apparatus |
| 07/11/2007 | CN1325670C Method for removing ferrous-iron from manganese sulfate |
| 07/11/2007 | CN1325669C Method for removing heavy-metal ions from manganese sulfate solution |
| 07/11/2007 | CN1325668C Leaching method for complicated cupric sulfide aurin ore |
| 07/10/2007 | CA2284466C Grain-oriented electrical steel sheet excellent in magnetic properties, and production method thereof |
| 07/05/2007 | WO2007074207A1 Method for recovering rare metals in a zinc leaching process |
| 07/05/2007 | WO2007074129A1 Method for the recovery of ruthenium from used ruthenium oxide-containing catalysts |
| 07/05/2007 | CA2632923A1 Method for recovering rare metals in a zinc leaching process |
| 07/04/2007 | CN1993295A Method for separating and purifying hafnium and zirconium |
| 07/04/2007 | CN1990864A Extraction method of acidophilic bacteria genome DNA in wet method metallurgy |
| 07/04/2007 | CN1324153C Preparation method of high-purity single rare earth |
| 07/04/2007 | CN1324152C Process for treating high arsenic high carbon gold mine |
| 07/03/2007 | CA2272857C Improved leaching of mineral ores |
| 07/03/2007 | CA2111287C Chelating resins and use thereof in selectively recovering valuable metals from acid mine drainage |
| 06/28/2007 | WO2007071028A1 Compounds, complexes and uses thereof |
| 06/28/2007 | WO2007071021A1 Process for recovering a base metal from a sulfide ore material |
| 06/28/2007 | WO2007071020A1 Process for recovering iron as hematite from a base metal containing ore material |
| 06/28/2007 | WO2007070974A1 Recovery of solid magnesium sulfate hydrate |
| 06/28/2007 | WO2007070973A1 Magnesium oxide recovery |
| 06/28/2007 | US20070148077 Production of lithium compounds directly from lithium containing brines |
| 06/28/2007 | US20070148065 Method of preparing ceramic powders using chelate precursors |
| 06/28/2007 | CA2639796A1 Process for recovering iron as hematite from a base metal containing ore material |
| 06/27/2007 | EP1799872A1 Separation apparatus |
| 06/27/2007 | CN1987041A Method and device for drilling four tube liquid pad selective thermal melting producing potassium salt mine |
| 06/27/2007 | CN1986851A Two-section roasting production process for recovering Au, Cu, Ag, As and s from As and C containing aurin ore |
| 06/27/2007 | CN1986849A No-saponifying pre-grouped extraction and separation process of ion adsorbing RE mineral |
| 06/27/2007 | CN1986848A Starting process of wet zinc-making system |
| 06/27/2007 | CN1986847A Indium floss producing hydrolysis process |
| 06/27/2007 | CN1323177C High Iron zinc calcine process method |
| 06/27/2007 | CN1323175C Production method of acid extractant saponifying organic phase used in rare earth extraction separation |
| 06/20/2007 | EP1583848A4 Recovering metals from sulfidic materials |
| 06/20/2007 | CN1322155C Method for separating and recovering Ru from solution containing pt family |
| 06/20/2007 | CN1322152C Desulfur method of iron ore |
| 06/20/2007 | CN1322151C Metallurgy extraction method by wet method with chloride assistance |
| 06/19/2007 | US7232554 Concentrating acid solution in evaporator series, crystallizing arsenic in solution as arsenic trioxide crystals, filtering crystallized solution to obtain solid phase comprising impure arsenic trioxide crystals, purifying |
| 06/14/2007 | WO2007065198A1 Mineral tank floating cover and method of vapour recovery |
| 06/14/2007 | US20070131059 Recovery of nickel |
| 06/13/2007 | EP1794334A1 Preparation of zinc chemicals from the minor flow of a process |
| 06/13/2007 | EP1794332A2 Apparatus and process for recovery of metal values from leach or waste slurries |
| 06/13/2007 | EP1794331A1 Production of ferro-nickel or nickel matte by a combined hydrometallurgical and pyrometallurgical process |
| 06/13/2007 | EP1451380B1 Process for the treatment of molybdenum concentrate also containing copper |
| 06/13/2007 | CN1978680A Method for preparing metal magnesium from magnesium mineral |
| 06/13/2007 | CN1978679A Ru and/or chlorination treatment method of Rh |
| 06/13/2007 | CN1978678A Recovery method of rhodium |
| 06/13/2007 | CN1321200C Method for separating copper, arsenic and zinc from copper-smelting high-arsenic flue dust sulphuric acid leach liquor |
| 06/12/2007 | CA2234989C Production of high purity copper from primary or secondary sulfides |
| 06/07/2007 | WO2007034413A3 Process for the indirect bioleaching of zinc sulphide |
| 06/07/2007 | US20070125199 High Temperature Heap Bioleaching Process |
| 06/06/2007 | EP1791627A1 Mixing apparatus |
| 06/06/2007 | CN1974853A Process of reusing waste iron and steel pickling hydrochloric acid solution and recovering nanometer iron powder and CO |
| 06/06/2007 | CN1320141C Method for preparing rutile type titanium-rich material from primary titanium-rich material |
| 06/06/2007 | CN1320138C Improved heap leach |
| 06/06/2007 | CN1320137C Compound leaching agent and leaching method for leaching out copper pyrite using compound leaching agent |
| 05/31/2007 | US20070122325 Production of titania |
| 05/30/2007 | EP1790741A1 Process for uranium recovery |
| 05/30/2007 | EP1790740A1 Process for uranium recovery |
| 05/30/2007 | EP1789599A1 Tank bioleaching process |
| 05/30/2007 | CN1973399A Method of disposing of lithium battery |
| 05/30/2007 | CN1972870A Process for complete utilisation of olivine constituents |
| 05/30/2007 | CN1970803A Process for smelting ferrovanadium by extraction of vanadium from vanadium-containing errophosphorus |
| 05/30/2007 | CN1970802A Heap-leaching dressing process for clay type gold mine |
| 05/30/2007 | CN1970801A Method for separating Fe-Mn and Mn-Zn |
| 05/30/2007 | CN1318621C Method for separating and recovering Sb and Bi |
| 05/30/2007 | CN1318619C Process for removing copper of cobalt electrolytic solution |
| 05/30/2007 | CN1318618C Method for deliverying microbe inoculator to bioleaching heap |
| 05/30/2007 | CN1318617C Heap leach process |
| 05/28/2007 | CA2568670A1 Process for extraction of nickel, cobalt, and other base metals from laterite ores by using heap leaching and product containing nickel, cobalt, and other metals from laterite ores |
| 05/23/2007 | EP1786757A1 Particular calixarenes method for production and use thereof |
| 05/23/2007 | CN1966745A Extraction and separation technology for reclaiming main impurity in indium in hydrochloric acid system |
| 05/23/2007 | CN1966742A Technology for separating indium and antimony in indium extraction process |
| 05/23/2007 | CN1966741A Method for treating oxidized copper ore |
| 05/23/2007 | CN1317404C Extraction process |
| 05/23/2007 | CN1317403C Heap-leaching indium-extracting process for zinc distillation furnace dross |
| 05/22/2007 | US7220394 Economical and environment-friendly process for recovery of chromium and iron and avoids landfilling of toxic metals |
| 05/18/2007 | WO2007053947A1 Thiosulfate generation in situ in precious metal recovery |
| 05/18/2007 | WO2007053919A1 The combined leaching process |
| 05/18/2007 | CA2629167A1 A combined leaching process for extracting nickel and cobalt from a nickel/cobalt-containing ore |
| 05/18/2007 | CA2629093A1 Thiosulfate generation in situ in precious metal recovery |
| 05/17/2007 | US20070111094 Synthesis of intermetallic negative electrodes for lithium cells and batteries |
| 05/17/2007 | US20070107550 Heap bioleaching and biooxidation of precious metal bearing refractory sulfide ores; improved air and fluid flow within the heap; crushing and separating the ore, forming a heap and a concentrate, biooxidation, hydrometallurgical recovery of gold, silver, platinum, or copper |
| 05/16/2007 | EP1785497A2 Method for bioleaching metal containing sulphidic materials |
| 05/16/2007 | EP1784516A1 Method for nickel and cobalt recovery from laterite ores by reaction with concentrated acid water leaching |
| 05/16/2007 | EP1618221B1 Method of and apparatus for simulating a biological heap leaching process |
| 05/16/2007 | DE202006014401U1 Elektrolysezelle mit intensivierten Stofftransport Electrolysis cell with enhanced mass transport |
| 05/16/2007 | CN1964768A Method and apparatus for purification of slightly water-soluble organic solution from aqueous entrainment |
| 05/16/2007 | CN1962900A Process for preparing grain-size-adjustable rare earth fluoride micro-powder in neutral phosphorus (phosphine) extraction system |
| 05/16/2007 | CN1962899A Process for leaching and separating metal components in heavy metal sludge by ultrasonic activation |
| 05/15/2007 | US7217366 Highly pure ammonium molybdate solutions; filtering industrial ammonium metallate by contacting a feed solution of ammonium metallate and alkali metal impurities with the retentate side of said membrane; withdrawing impurities; repeating |
| 05/10/2007 | WO2007052801A1 Method for extraction of rutile |
| 05/09/2007 | CN1961086A Production of titania |
| 05/09/2007 | CN1960826A Copper-containing tin powder and method for producing the copper-containing tin powder, and electroconductive paste using the copper-containing tin powder |
| 05/09/2007 | CN1958815A Biological extract technology for ore of cobalt nickel oxide |
| 05/09/2007 | CN1958814A Method for enriching noble metals from noble antimonial alloy |
| 05/09/2007 | CN1314821C In-situ chemical process of preparing zircmia reinforced copper-base composite material |
| 05/09/2007 | CN1314818C Method for extracting rare metal from waste and old carbide alloy |
| 05/08/2007 | US7214362 Dissolving a niobium compound including tantalum as an impurity in an HydroFluoric acid solution; precipitating crystals of a niobium compound, separating, dissolving the precipitated crystals in an aqueous solution, adding an organic solvent, extracting and recovering a highly pure niobium compound |
| 05/08/2007 | US7214355 Preparing an aqueous slurry of the metal carbonate: introducing carbon dioxide gas to form a corresponding metal biocarbonate solution and heating that solution to form a purified metal carbonate and precipitate it |
| 05/08/2007 | US7214256 comprise circuit configuration for a plant with coutercurrent extraction stages and stripping section |
| 05/03/2007 | US20070098628 Methods and apparatus for processing mixtures of liquids and solids |
| 05/02/2007 | EP1778883A1 Method for nickel and cobalt recovery from laterite ores by combination of atmospheric and moderate pressure leaching |