| Patents for C22B 3 - Extraction of metal compounds from ores or concentrates by wet processes (16,429) |
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| 05/25/2005 | CN1618995A Phodochrosite leaching technology |
| 05/25/2005 | CN1203197C Method for preparing nickel and aluminium chemical product from catalyst refuse containing nickel and AL2O3 |
| 05/24/2005 | US6896815 Methods for removing heavy metals from water using chemical precipitation and field separation methods |
| 05/24/2005 | US6896808 Recovery of metal values from aqueous solutions and slurries |
| 05/19/2005 | WO2005045078A1 A method for the removal of copper from a zinc sulphate solution |
| 05/19/2005 | WO2004106564A3 Method for recovering at least one metallic element like cesium from ore |
| 05/19/2005 | US20050107599 For (back) extracting rare earth metal ions from aqueous solutions |
| 05/19/2005 | US20050103402 Contacting with magnesium oxide, hydroxide, chloride,nitrate or carbonate to reduce the acid generation potential of rock; useful to reduce the amount of acid rock drainage from mine waste tailings and other areas where formation of acid products is a problem |
| 05/19/2005 | US20050103163 Hydrometallurgical processing of manganese containing materials |
| 05/19/2005 | US20050103162 High temperature heap bioleaching process |
| 05/18/2005 | EP1325164B1 Pressure leaching process for zinc recovery from sulphidic ore materials |
| 05/18/2005 | EP1242637A4 A bacterially assisted heap leach |
| 05/18/2005 | CN1616690A Method for enriching bismuth by polyvinyl alcohol amine oxime chelate fiber |
| 05/17/2005 | US6893606 Method and system for extracting metal from glass waste |
| 05/17/2005 | US6893605 Method and system for extracting metal from glass waste |
| 05/17/2005 | US6893570 Running water through open pond structure including alkaline steel slag bed and vertical flush flow paths; cleaning mine drainage of large concentrations of manganese |
| 05/17/2005 | US6893513 For producing components of sputtering targets, capacitor cans, resistive film layers, wire |
| 05/17/2005 | US6893482 Method for improving metals recovery using high temperature pressure leaching |
| 05/12/2005 | WO2005042792A1 Filter extraction mechanism |
| 05/12/2005 | WO2005042790A1 Leach extraction method |
| 05/12/2005 | US20050102061 Automated mineral processing systems and methods |
| 05/12/2005 | CA2544511A1 Leach extraction method |
| 05/11/2005 | EP1226284B1 Apparatus for heating flowing material containing solids |
| 05/11/2005 | CN1614042A Separation of wulfenite by bio-leaching out and extracting process |
| 05/11/2005 | CN1614041A Enhanced acid dissolve of acidizing fired slags of concentrated gold ores containing sulfur |
| 05/11/2005 | CN1613534A Processing method for antibiotics bacterial slag containing zinc |
| 05/10/2005 | US6890496 Using diquaternary ammonium compound |
| 05/10/2005 | US6890371 Method for processing elemental sulfur-bearing materials using high temperature pressure leaching |
| 05/10/2005 | CA2385775C Production of zinc oxide from complex sulfide concentrates using chloride processing |
| 05/10/2005 | CA2077441C Production of synthetic rutile |
| 05/06/2005 | WO2005040438A1 Method for processing manganese-containing materials |
| 05/06/2005 | WO2005040437A1 Method of wet treatment of fly ash |
| 05/06/2005 | WO2005040435A1 Oxidative leach process for recovery of hydrocarbons and the extraction of metals |
| 05/06/2005 | WO2004104238A3 Method for extracting copper from leach solutions at elevated temperatures |
| 05/05/2005 | US20050093211 Method and unit for continuously producing metal microparticle |
| 05/04/2005 | CN1612944A Process for the treatment of molybdenum concentrate |
| 05/04/2005 | CN1200475C Method for recovery of lithium from used lithium ion cell with ion sieve |
| 05/03/2005 | US6887368 Comprises six-electrode-containing bipolar cylindrical electroreactor and application of alternating current |
| 05/03/2005 | CA2350726C Process and apparatus for treating foundry sludge to recover magnesium |
| 04/28/2005 | WO2005038060A1 Production of titania |
| 04/28/2005 | US20050087722 Recovering copper using water insoluble extractant; minimizing entrainment of aqueous in the loaded organic, higher recoveries of copper, reduced equipment size such as smaller mixers and settlers and less overall organic inventory being required to operate a commercial plant |
| 04/28/2005 | US20050087037 Recovery of natural nanoclusters and the nanoclusters isolated thereby |
| 04/27/2005 | CN1609242A Process for recovering strontium and aluminium from metal strontium residue |
| 04/27/2005 | CN1609241A Process for mutual separation of platinum group metals |
| 04/27/2005 | CN1198950C Recovery of zinc from zinc bearing sulphide minerals by bioleaching and electrowinning |
| 04/27/2005 | CN1198949C Recovery of copper from copper bearing sulphide minerals by bioleaching with controlled oxygen feed |
| 04/27/2005 | CA2460398A1 Oxidative leach process for the recovery of hydro-carbons and the extraction of metals |
| 04/27/2005 | CA2446504A1 Oxidative leach process for extracting metal from ore |
| 04/26/2005 | US6884280 Heat transfer in heap leaching of sulphide ores |
| 04/21/2005 | WO2005035804A1 Recovery of precious metals from waste catalysts |
| 04/21/2005 | US20050082221 phytoremediation using various fern plants for removing contaminated substances such as arsenic, from sites containing polluted soils and waters and airborne substances such as those found with waste water, ground water, surface water |
| 04/21/2005 | US20050081683 Process for extracting platinum group metals |
| 04/19/2005 | CA2347552C Recovery of zinc from galvanized coatings |
| 04/14/2005 | WO2005011847A8 Metal oxide processing methods and systems |
| 04/14/2005 | WO2003091463A8 Method for the recovery of gold |
| 04/14/2005 | US20050079114 From aqueous stream; mixing with quaternary ammonia compound; filtration; water pollution control |
| 04/13/2005 | EP1458897B1 Chromium removal from leach liquors produced during high pressure acid leaching of lateritic ores |
| 04/13/2005 | EP1133576A4 Recovering metals from soil |
| 04/13/2005 | CN1605639A Process for clean conversion of tantalum niobium ore |
| 04/13/2005 | CN1605638A Process for recovering rare earth from neodymium-ion-boron waste materials |
| 04/13/2005 | CN1196799C Method for extraction of metal from iron ore containing chalcopyrite |
| 04/12/2005 | US6878356 Recovery of zinc from galvanized coatings |
| 04/07/2005 | WO2005031012A1 A process for the recovery of value metals from base metal sulfide ores |
| 04/07/2005 | WO2005031010A2 Apparatus for enhancing solubility |
| 04/07/2005 | US20050072735 Purification of ammonium metallate solutions |
| 04/06/2005 | EP1409753A4 Solvent extraction of impurities from concentrated metal sulphate solutions |
| 04/06/2005 | EP1028845B1 System for extracting soluble heavy metals from liquid solutions |
| 04/06/2005 | CN1604969A Recovery of copper from chalcopyrite |
| 04/06/2005 | CN1195882C Process for refining silver bullion |
| 04/06/2005 | CN1195880C Method of recovering waste copper foil |
| 04/06/2005 | CN1195878C Gravity flow static adsorption method in gold ore bulk leaching |
| 04/05/2005 | US6875356 Method and apparatus for recovery of metals with hydrocarbon-utilizing bacteria |
| 04/05/2005 | US6875254 Methods for detecting and extracting gold |
| 04/05/2005 | CA2282470C A process for the leaching of chalcopyrite |
| 04/05/2005 | CA2264269C Method for pressure oxidizing gold-bearing refractory sulfide ores having organic carbon |
| 03/31/2005 | WO2005028687A1 Improvement to silver and gold leaching method with thiourea solutions |
| 03/31/2005 | WO2005028686A1 Method for processing anode sludge |
| 03/31/2005 | WO2005028379A1 Method and apparatus for treating drain water from step of washing fly ash with water |
| 03/31/2005 | US20050069474 Method for precipitating iron from a zinc sulphate solution as hematite |
| 03/31/2005 | US20050069473 Integration processes of the treatments of zinc silicate concentrates or zinc silicate ore and roasted concentrates of zinc sulphides |
| 03/31/2005 | US20050067299 Electrolytic method in diaphragm-type cell |
| 03/31/2005 | US20050066774 Leaching in presence of oxidant (nitric acid) while being suspended in hydrochloric acid solution, and solvent extraction with diethylene glycol dibutyl ether to form raffinate, hydrolyzing, then precipitating |
| 03/31/2005 | US20050066773 Heap bioleaching process for the extraction of zinc |
| 03/31/2005 | CA2534737A1 Improvement to silver and gold leaching method with thiourea solutions |
| 03/30/2005 | EP1425428B1 Method for obtaining cobalt and nickel from ores and ore concentrates |
| 03/30/2005 | EP1248863B1 Method to control manganese in zinc leach circuits |
| 03/30/2005 | CN1602365A A method for precipitating iron from a zinc sulphate solution as hematite |
| 03/30/2005 | CN1195083C Scheelite decomposing process |
| 03/30/2005 | CN1195082C Process for recovering Mo from low-grade molybdenite by dump leaching |
| 03/24/2005 | WO2005025768A1 Method and apparatus for treating incineration fly ash |
| 03/24/2005 | US20050061748 Compositions for removing metal ions from aqueous process solutions and methods of use thereof |
| 03/24/2005 | US20050061146 purification of flue gases containing mercury and trace elements from combustion chambers, boilers or engineering plants, by contacting the gases with reactive chemical species generated in a plasma device to converted the metals into forms that can be scrubbed or filtered |
| 03/24/2005 | DE10339328A1 Verfahren zur Trennung von dreiwertigem Americium von dreiwertigem Curium A process for separating trivalent americium from trivalent curium |
| 03/23/2005 | CN1598013A Process for removing copper of cobalt electrolytic solution |
| 03/23/2005 | CN1598012A Process for cleaning decopper nickel electrolytic solution |
| 03/23/2005 | CN1597518A Purification of ammonium metallate solutions |
| 03/23/2005 | CN1194109C Supersonic pre-treatment process of toxic refractoy gold ore containing As.S. etc. |
| 03/22/2005 | US6869520 Process for the continuous production of high purity electrolytic zinc or zinc compounds from zinc primary or secondary raw materials |
| 03/22/2005 | CA2344943C Method for the production of a high-purity concentrated magnesium chloride solution by acid leaching and neutralization |
| 03/16/2005 | EP1514847A2 Purification of ammonium metallate solutions |