| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 02/18/2004 | CN1475589A Acid balance method in biometallugical process |
| 02/18/2004 | CN1475588A Acid resistant mutagenic bacteria and its use in leaching process of concentrate |
| 02/18/2004 | CN1475587A Bioleaching process of sulfide mineral ore or concentrate or tailing containing alkaline veinstone |
| 02/18/2004 | CN1475586A Acid resistant mutagenic bacteria and its dump leaching process used for ore |
| 02/18/2004 | CN1475585A Sulfur addition acid balance method in biometallugical process |
| 02/18/2004 | CN1475584A Pellelizing technology suitable for biological dump leaching and extracting metal |
| 02/18/2004 | CN1475559A Breeding method of acid resistant mutagenic ore immersion bacterial culture |
| 02/18/2004 | CN1475312A Recovery technology of metal sulfide ore tailings |
| 02/17/2004 | US6692719 Combusting hydrocarbon fuel with oxygen-enriched gas in hot bed of fluidized metal oxide particles, pyrohydrolyzing spent aqueous metal halide leach liquor to produce solid metal oxide fraction and acid halide gas fraction, absorbing gas in water |
| 02/17/2004 | US6692710 Acid leaching; magnesium compound formed after nickel or cobalt is brought into solution; adding alkali or alkaline earth metal carbonate to produce magnesite; adding hydrogen chloride to produce magnesium chloride; salt formation |
| 02/17/2004 | US6692709 Using an extractant solution of a calcium ion or magnesium ion loaded extractant in a water immiscible organic solvent |
| 02/17/2004 | CA2302965C Processes and intermediates for preparing anti-cancer compounds |
| 02/12/2004 | WO2003068693A8 Processes for treating iron-containing waste streams |
| 02/12/2004 | WO2003060172A3 Pressure oxidation of ore containing silver |
| 02/12/2004 | WO2002081761A3 Bioleaching of a sulphide concentrate in a saline solution |
| 02/12/2004 | WO2002070756A3 Recovery of metals from jarosite-containing materials |
| 02/12/2004 | US20040028585 Cooling melt to harden; extraction, separation |
| 02/12/2004 | US20040026330 Process for the utilization of vanadium from chromium ore as vanadium (V) oxide |
| 02/12/2004 | US20040026329 Precious metal scavenging from a liquid medium with a functionalised polymer fiber |
| 02/11/2004 | CN1473946A Ore dressing process of clay type gold ore leaching method |
| 02/05/2004 | DE10009956B4 Verfahren zur Zerstörung von Nitrat in sauren, wässrigen Lösungen, insbesondere Edelmetall-Lösungen A process for the destruction of nitrate in acidic aqueous solutions, in particular precious metal solutions |
| 02/04/2004 | EP1385600A1 Method of adsorbing metals and organic compounds from vaporous streams |
| 02/04/2004 | CN1472347A Method for separatnig uranium from plutonium in parex procedure |
| 02/04/2004 | CN1472346A Recovery of palladium metal from waste palladium/aluminium oxide catalyst |
| 02/03/2004 | US6686202 Quantitating gold in ore samples utilizing a gold-specific protein are provided, including methods for multiple sample handling. also provided are methods for extracting gold from mineral suspensions utilizing a magnetic mineral binding |
| 02/03/2004 | US6685896 Method for recovering rhodium from reaction products of oxosynthesis |
| 02/03/2004 | US6685877 Apparatus for heating flowing material containing solids |
| 01/28/2004 | EP1383934A1 Removal of non-water soluble substances from solutions of aqueous metal extracts |
| 01/28/2004 | CN1470656A Method for producing tungstic acid from tungstite powder |
| 01/28/2004 | CN1136322C Process for extracting and recovering silver |
| 01/28/2004 | CN1136321C NaOH decomposition method of scheelite and mixed wolframite and scheelite ore |
| 01/27/2004 | US6682644 Process for producing electrolytic manganese dioxide from geothermal brines |
| 01/22/2004 | US20040014589 Method for removing impurities from solvent extraction solutions |
| 01/22/2004 | US20040011739 Treating aqueous medium containing solution of zirconium and hafnium compound with ligand which complexes with one of the metals; passing over filtration membrane which allows complexes to pass but retains metals not complexed |
| 01/21/2004 | EP1295953B1 Method for producing platinum material reinforced with dispersed oxide |
| 01/20/2004 | US6680035 Hydrometallurgy |
| 01/20/2004 | US6680034 Copper; solvent extraction, electrowinning |
| 01/20/2004 | US6679984 Method for recovery of gold and silver |
| 01/20/2004 | CA2104120C Mineral recovery apparatus |
| 01/15/2004 | WO2004005586A1 Electrolytic method of the extraction of metals |
| 01/15/2004 | WO2004005557A1 Metal compound removal |
| 01/15/2004 | WO2004005556A1 Process for leaching precious metals |
| 01/15/2004 | US20040007536 Process for recovering arsenic from acidic aqueous solution |
| 01/15/2004 | US20040007521 Polysulfonamide matrices |
| 01/14/2004 | EP1379703A2 Method of purification of a redox mediator solution before electrolytic regeneration thereof |
| 01/14/2004 | EP0883427B1 Metallurgical dust recycle process |
| 01/13/2004 | US6676909 Method for recovery of metals from metal-containing materials using medium temperature pressure leaching |
| 01/13/2004 | CA2326037C The recovery of gold from refractory ores and concentrates of such ores |
| 01/08/2004 | US20040005267 Production of lithium compounds directly from lithium containing brines |
| 01/08/2004 | US20040003681 Method for recovering catalytic metals using a porous metal filter |
| 01/07/2004 | CN1465726A Cyanogen free stripping process for golde-carried carbon |
| 01/07/2004 | CN1465725A Method for decomposing calcioscheelite and mixed wolframite calcioscheelite under normal pressure by sodium hydrate |
| 01/07/2004 | CN1465724A Wet method copper-extracting process |
| 01/07/2004 | CN1465723A Method for directly, simutaneously leaching manganese oxide ore or zinc surfide (or lead surfide) headings in dilute acid |
| 01/07/2004 | CN1133752C Direct zinc sulfide concentrate leaching-out process with coupled synergic leaching-out and solvent extraction and separation |
| 01/02/2004 | EP1373139A1 Extraction of silica and magnesium compounds from olivine |
| 01/01/2004 | US20040002276 Image display apparatus, disassembly processing method therefor, and component recovery method |
| 01/01/2004 | US20040000523 Silica-polyamine extraction material |
| 12/31/2003 | CN1132946C Noble metal smelting slag wet metallurgical process |
| 12/31/2003 | CN1132945C Microbe leaching-out method of valuable metals from deep-sea polymetal nodule |
| 12/30/2003 | US6669852 Separation method of goethite-containing red mud |
| 12/30/2003 | US6669757 Method for extracting metal from glass waste |
| 12/25/2003 | US20030236440 Recover and recycle rhodium from spent partial oxidation catalysts |
| 12/24/2003 | WO2003068693A3 Processes for treating iron-containing waste streams |
| 12/24/2003 | CN1462812A Technqiue for soaking copper pyrites |
| 12/24/2003 | CN1462811A Catalytic oxidation method for preparing sodium pyroantimonate from antimony ore |
| 12/23/2003 | US6666904 Method and system for extracting metal from glass waste |
| 12/18/2003 | WO2003104503A1 Inhibition of the depletion of precious metal values from pregnant lixiviant solutions |
| 12/18/2003 | WO2003104149A1 Process for recovering rare earth oxide from waste liquid containing rare earth element, and process for producing rare earth oxide using same |
| 12/18/2003 | US20030230171 Process of recovering copper from ore |
| 12/18/2003 | DE10221326C1 Assembly to denickel a bio-mass, e.g. a fuel emulsion, has a pressure vessel with structured pressures and temperatures, to deposit separated materials on its surfaces |
| 12/17/2003 | EP1371610A1 Process for producing nanometer grade powders |
| 12/17/2003 | EP1370700A1 Metal ion extraction materials and processes using same |
| 12/17/2003 | EP1370699A1 A method for the precipitation of silica in connection with zinc ore leaching |
| 12/17/2003 | EP1080239B1 Process to recover molybdenum and vanadium metals from spent catalyst by alkaline leaching |
| 12/17/2003 | CN1131326C Technology Process for directly producing mixed rare earth oxide |
| 12/11/2003 | WO2003102272A1 Process for producing electrolytic manganese dioxide from geothermal brines |
| 12/11/2003 | WO2003102254A1 Method of metal recovery |
| 12/11/2003 | WO2003102253A1 Heap leaching |
| 12/11/2003 | WO2003101609A1 Ultrasonic reactor and process for ultrasonic treatment of materials |
| 12/11/2003 | US20030228251 Production of lithium compounds directly from lithium containing brines |
| 12/11/2003 | US20030228245 In metal leaching; using surfactant mixtures |
| 12/11/2003 | US20030228244 Inhibition of the depletion of metal values from pregnant lixiviant solutions |
| 12/11/2003 | US20030226761 Process for producing electrolytic manganese dioxide from geothermal brines |
| 12/10/2003 | EP1232290B1 Method for leaching nickeliferous oxide ores of high and low magnesium laterites |
| 12/10/2003 | EP1228259B1 Resin-in-pulp method for recovery of nickel and cobalt from oxidic ore leach slurry |
| 12/10/2003 | EP1228257B1 Atmospheric leach process for the recovery of nickel and cobalt from limonite and saprolite ores |
| 12/10/2003 | CN1460644A Improved acid-alrali production process of airconium oxychloride |
| 12/10/2003 | CN1130267C Chelate-forming porous hollow fiber membrane and method for recovery of germanium oxide with same |
| 12/09/2003 | US6660059 Contacting the precious metal (gold) ore with a thiosulfate lixiviant at superatomopheric pressure in absence of added copper and ammonia to solubilize the precious metal from a pregnant thiosulfate leach solution, recovering the metal |
| 12/04/2003 | WO2003100105A1 Chloride assisted hydrometallurgical extraction of metals |
| 12/04/2003 | US20030223927 Liquids/solids reaction vessel configured to contain a mixture of at least one liquid and at least one solid. The vessel includes a closed perimeter wall defined by an effective height, and a bottom connected to the closed perimeter wall to |
| 12/03/2003 | EP1366218A1 Electrorefining process for separating metals |
| 12/03/2003 | EP1366202A1 A method for the bacterially assisted heap leaching of chalcopyrite |
| 12/03/2003 | EP1366201A1 A method for the removal of calcium from a zinc process sulfate solution |
| 12/03/2003 | EP1097247B1 A method for isolation and production of magnesium based products |
| 12/02/2003 | US6657081 Calixarene derivatives |
| 12/02/2003 | US6656360 Use of wicking fiber material of thermoplastic resin containing selected liquid extractant, which can capture the metal contaminants |
| 12/02/2003 | US6656247 Selective precipitation of manganese from magnesium-containing solutions |
| 11/27/2003 | WO2003097903A1 Method and device for producing high-purity metal |