| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 09/17/2003 | EP1231285B1 Process and equipment for the separation of gold particles |
| 09/17/2003 | EP1229977A4 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 09/17/2003 | CN2573507Y Aqua regia gold dissolving device for purifying gold |
| 09/12/2003 | WO2003074538A1 Novel phosphonamides, process for producing the same, and use thereof |
| 09/11/2003 | US20030170158 Method for solubilizing metal values |
| 09/11/2003 | US20030168131 High purity tantalum, products containing the same, and methods of making the same |
| 09/11/2003 | US20030167879 Heat transfer in heap leaching of sulphide ores |
| 09/10/2003 | EP1342802A1 Process for the recovery of elemental sulphur from slurries containing metal sulphides and elemental sulphur |
| 09/10/2003 | EP1341723A2 Process for recovering arsenic from acidic aqueous solution |
| 09/10/2003 | CN1441708A Materials and method for biological production of sulfuric acid |
| 09/10/2003 | CN1441070A Electric reduction-P extraction and separation process to recover RE and Co from wast Nd-Fe-B material |
| 09/10/2003 | CN1441069A Gravity flow static adsorption method in gold ore bulk leaching |
| 09/10/2003 | CN1440837A Ore separating method for low-grade oxide gold ore |
| 09/10/2003 | CN1120893C Process for recovering Co and Mn Catalyst from oxidized dregs of terephthalic acid |
| 09/10/2003 | CN1120805C Method for extracting germanium deoxide from raw coal |
| 09/04/2003 | WO2003072505A1 Purification method for producing high purity niobium compound and/or tantalum compound |
| 09/04/2003 | WO2003072504A1 Purification method for producing high purity niobium compound and/or tantalum compound |
| 09/04/2003 | WO2003072503A1 Method of purifying niobium compound and/or tantalum compound |
| 09/04/2003 | WO2003006694A8 Process for passivating sulfidic iron-containing rock |
| 09/04/2003 | US20030165416 Methods to control H2S and arsine emissions |
| 09/04/2003 | US20030165413 Precipitating in acid solution; centrifuging, filtration |
| 09/03/2003 | EP1339883A1 Method for the hydrolytic precitpitation of iron |
| 09/03/2003 | EP0517786B1 Production of synthetic rutile |
| 09/03/2003 | CN1439730A Ce extraction from nitric acid rare earth solution |
| 09/02/2003 | US6613271 Apparatus and methods for recovering valuable metals |
| 09/02/2003 | US6613153 Method for reducing the radioactivity of metal part |
| 08/28/2003 | WO2003070993A1 Device and process for solvent extraction |
| 08/27/2003 | EP1337677A2 Direct atmospheric leaching of highly-serpentinized saprolitic nickel laterite ores with sulphuric acid |
| 08/27/2003 | EP1337675A1 Chromatographic method of separating ruthenium from platinum group metals |
| 08/27/2003 | CN1438335A Method for separating hafnium from zirconium |
| 08/27/2003 | CN1119424C Process for extracting cerium by oxydol oxidation method |
| 08/26/2003 | US6610268 Contacting an aqueous solution with a sulfur material in a pile, pile additionally contains acidophilic microbes; aerating the pile with an oxygen-containing gas; withdrawing a liquid stream from said pile |
| 08/26/2003 | CA2204060C Method and apparatus for recycling of scrap metal |
| 08/21/2003 | WO2003068999A1 Delivery system for heap bioleaching |
| 08/21/2003 | WO2003068693A2 Processes for treating iron-containing waste streams |
| 08/21/2003 | US20030157004 Extraction of metals with diquaternary amines |
| 08/21/2003 | US20030154822 Leaching the precious metal with a leach solution containing a thiosulfate based lixiviant, treating the material by oxidizing precious metal in the material into a form that is leachable in a leaching step |
| 08/21/2003 | US20030154821 Leaching the silver bullion with nitric acid in oxygen atomsphere, followed by filtration, separating gold bearing residue form silver rich liquor, heating, evaporating water, forming silver nitrate melt, and separating form the residue |
| 08/21/2003 | CA2464445A1 Delivery system for heap bioleaching |
| 08/14/2003 | WO2003066915A1 Metal recovery process |
| 08/14/2003 | US20030152503 Metal recovery process |
| 08/14/2003 | US20030150818 Especially used in the processing of the waste streams from the chlorination of titanium-bearing raw materials and involve the use of certain combinations of neutralization and precipitation steps. |
| 08/14/2003 | US20030150815 Process for preparing iron free zinc oxide |
| 08/13/2003 | EP1335031A1 Process for the treatment of metalliferous residues in petroleum tars gasification plants |
| 08/13/2003 | EP1334213A2 Process for regeneration of spent acid halide leach solutions |
| 08/12/2003 | US6605203 Electrode apparatus |
| 08/06/2003 | EP1332234A1 Precious metal scavenging from a liquid medium with a functionalised polymer fiber |
| 08/06/2003 | EP1258535B1 Process for electrolytic production of highly pure zinc or zinc compounds from primary and secondary zinc raw materials |
| 08/05/2003 | US6602319 Process for the recovery of gold and silver from used refractory bricks |
| 07/31/2003 | WO2003062478A1 Method for the separation of zinc and a second metal which does not form an anionic complex in the presence of chloride ions |
| 07/31/2003 | US20030143138 Extracting an aqueous feed mix comprising zirconium oxychloride and hafnium oxychloride and a thiocyanate salt with thiocyanate-containing organic solvent to produce a aqueous raffinate stream and organic raffinate stream |
| 07/31/2003 | US20030141242 Porous support matrices; permselective membrane |
| 07/30/2003 | EP1330555A1 Solvent extraction process for recovering nickel and cobalt from leach solutions |
| 07/30/2003 | EP1141424B1 Composition of oxime and hydroxy-ester for the solvent extraction of metals |
| 07/30/2003 | EP1070150B1 Method for treating steel works dust by wet process |
| 07/30/2003 | CN2563163Y Cyaniding steeping air stirrer |
| 07/30/2003 | CN1116423C Extraction method for ore containing as and others difficult to process |
| 07/29/2003 | US6599414 Solvent extraction processes for metal recovery |
| 07/24/2003 | WO2003060172A2 Pressure oxidation of ore containing silver |
| 07/24/2003 | US20030136685 Process for electrochemical decomposition of superalloys |
| 07/24/2003 | US20030136225 High temperature pressure oxidation of ores and ore concentrates containing silver using controlled precipitation of sulfate species |
| 07/23/2003 | EP1255697B1 Method for recovering rhodium from reaction products of oxosynthesis |
| 07/23/2003 | CN1115419C Process for treating electrolytic anode mud |
| 07/22/2003 | US6596252 Recycling of spent pot linings |
| 07/22/2003 | US6596245 Process for the recovery and refining of rhodium |
| 07/22/2003 | US6596053 Processes for the recovery of copper from aqueous solutions containing nitrate ions |
| 07/17/2003 | US20030131908 Process for passivating sulfidic iron-containing rock |
| 07/17/2003 | DE10155791C1 Verfahren zum elektrochemischen Aufschluss von Superlegierungen A method for the electrochemical decomposition of superalloys |
| 07/16/2003 | EP1327693A1 Process for extracting cobalt and nickel from ores and ore concentrates |
| 07/16/2003 | CN1114705C Fluid extraction of metals or metalloids |
| 07/16/2003 | CN1114500C Production of aromatic carboxylic acids and recovery of Co/Mn catalyst fromash |
| 07/15/2003 | US6592830 Treating niobium and or tantalum containing raw materials |
| 07/15/2003 | US6592644 Leaching the copper-sulfidic and/or copper/iron-sulfide ores, ores are converted to covelline, pyrite and accompanying sulfides by addition of sulfur in conversion step prior to leaching; extracting the nobel, rare earth and copper metals |
| 07/10/2003 | WO2003056045A1 Chromium removal from leach liquors produced during high pressure acid leaching of lateritic ores |
| 07/10/2003 | WO2003056043A1 Recovery of platinum group metals from mining tails |
| 07/10/2003 | WO2003056042A1 A method for precipitating iron from a zinc sulphate solution as hematite |
| 07/10/2003 | US20030129113 Upgrading titaniferous materials |
| 07/10/2003 | US20030129112 Selective metal leaching process |
| 07/09/2003 | EP1325165A1 Recovery of nickel and cobalt values from a sulfidic flotation concentrate by chloride assisted oxidative pressure leaching in sulfuric acid |
| 07/09/2003 | EP1325164A2 Pressure leaching process for zinc recovery from sulphidic ore materials |
| 07/09/2003 | CN1429391A Method for isolating and purifying 90Y from 90 strontium in multi-curie quantities |
| 07/08/2003 | CA2305052C Bioleaching sulfidic materials |
| 07/08/2003 | CA2222639C Metal and fluorine values recovery from fluoride salt matrices |
| 07/08/2003 | CA2065491C Metal recovery |
| 07/03/2003 | WO2003054238A1 A method for the recovery of cobalt |
| 07/03/2003 | WO2003054237A1 4-(alpha branched)acyl- (3h)-pyrazol-3-ones for use in the extraction of metals, especially copper, from solution |
| 07/03/2003 | US20030124744 Methods for detecting and extracting gold |
| 07/03/2003 | US20030124040 Pressurization oxidation; separation; recovering copper |
| 07/03/2003 | US20030121857 Acid stable membranes for nanofiltration |
| 07/03/2003 | US20030121833 Method of reducing phosphate ore losses in a desliming process |
| 07/02/2003 | EP0964830B1 Method for producing hyperazeotropic hydrochloric acid from metal chloride solutions |
| 06/26/2003 | US20030119923 Method for recovering rhodium from reaction products of oxosynthesis |
| 06/25/2003 | EP1321534A2 A method for recovering catalytic metals |
| 06/25/2003 | EP1259652A4 Process and apparatus for recovery of cyanide and metals |
| 06/25/2003 | EP1159461B1 Recovery of nickel and cobalt from ore |
| 06/25/2003 | CN1112451C Metal manganese electrolyzing technology with roasted ore to replace natural mangnese dioxide ore |
| 06/24/2003 | US6582494 Biologically assisted leaching of copper concentrates with the use of a portion of the raffinate produced by solvent extraction to satisfy the demand for acid in the leaching step |
| 06/19/2003 | WO2003049880A1 Method of extracting contaminants from solid matter |
| 06/19/2003 | WO2003025234A3 Method for obtaining cobalt and nickel from ores and ore concentrates |
| 06/19/2003 | CA2469311A1 Method of extracting contaminants from solid matter |