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Browse by Category: Main > Chemistry
Class Information
Number: 423/24
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Group ib metal (cu, ag, or au) > Ion exchanging or liquid-liquid extracting
Description: Processes, which include the step of (1) attracting and retaining a component of the mixture by contact with an ion exchange substance or (2) selectively dissolving a component in one of two immiscible liquids to effect a separation; see Glossary.










Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8663584 Method and technique employing a novel extractant to enhance recovery of gold and palladium from hydrochloric acid media Mar. 4, 2014
8658114 Methods for recovering cobalt from copper solvent extraction raffinate Feb. 25, 2014
8647595 Method for separating radioactive copper using chelating-ion exchange resin Feb. 11, 2014
8628739 Direct purification of a nickel laterite leaching effluent Jan. 14, 2014
8563622 Picolylamine resins Oct. 22, 2013
8562922 Picolylamine resins Oct. 22, 2013
8529850 Compositions and methods of using a ketoxime in a metal solvent Sep. 10, 2013
8491700 Methods and systems for recovering rhenium from a copper leach Jul. 23, 2013
8475748 Metal solvent extraction reagents and use thereof Jul. 2, 2013
8460623 Methods of metal extraction using oximes Jun. 11, 2013
8435466 Methods of metal extraction from ammoniacal solutions using oximes May. 7, 2013
8420048 System and method for parallel solution extraction of one or more metal values from metal-bearing materials Apr. 16, 2013
8372360 Controlled metal leach recovery circuit Feb. 12, 2013
8372361 Copper recovery circuit Feb. 12, 2013
8343446 Oxine modified silican polyamine composites for the separation of gallium from aluminum, ferric from nickel and copper from nickel Jan. 1, 2013
8329124 Metal extractant reagents having increased resistance to degradation Dec. 11, 2012
8323502 Multi-layered macromolecules and methods for their use Dec. 4, 2012
8323510 Ultrasound assisted heavy metal recovery Dec. 4, 2012
8298510 Process for improving phase separations in solvent extraction circuits Oct. 30, 2012
8282857 Modification of copper/iron selectivity in copper solvent extraction systems Oct. 9, 2012
8257671 Method of leaching copper sulfide ore Sep. 4, 2012
8114294 Multi-layered macromolecules and methods for their use Feb. 14, 2012
8062614 Methods for improving the recovery of metal leaching agents Nov. 22, 2011
8030055 Method of biotreatment for solid materials in a nonstirred surface bioreactor Oct. 4, 2011
8003066 Method for scrubbing amine-type extractant Aug. 23, 2011
8003064 Controlled copper leach recovery circuit Aug. 23, 2011
7993613 More efficient ether modifiers for copper extractant formulations Aug. 9, 2011
7959812 Multi-column sequenced separation process for separating an ionic metal derivative Jun. 14, 2011
7837959 Synergistic solvent extraction process Nov. 23, 2010
7807058 Method and composition for sorbing toxic substances Oct. 5, 2010
7799294 Methods for improving the recovery of metal leaching agents Sep. 21, 2010
7794677 Reduction of copper content in the molybdenite concentrate Sep. 14, 2010
7763566 Method and composition for sorbing toxic substances Jul. 27, 2010
7736487 Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solution extraction Jun. 15, 2010
7731853 Method and equipment for purifying an extraction solution from aqueous entrainment and impurities Jun. 8, 2010
7722841 Polymeric chelant and coagulant to treat metal-containing wastewater May. 25, 2010
7682581 Method for the removal of copper from a zinc sulphate solution Mar. 23, 2010
7678275 Method and equipment for liquid-liquid extraction Mar. 16, 2010
7666371 Method for recovering metal values from metal-containing materials using high temperature pressure leaching Feb. 23, 2010
7635457 Method for heap and dump leaching coupled with solvent extraction for metal recovery Dec. 22, 2009
7615199 Method for the recovery of valuable metals and arsenic from a solution Nov. 10, 2009
7585475 Highly-conductive copper extractant formulations Sep. 8, 2009
7553461 Multivalent metal ion extraction using diglycolamide-coated particles Jun. 30, 2009
7531149 Synthetic control of metal oxide nanocrystal sizes and shapes May. 12, 2009
7494630 Method of stripping metals from organic solvents Feb. 24, 2009
7473413 Method for recovering metal values from metal-containing materials using high temperature pressure leaching Jan. 6, 2009
7449160 Process of solvent extraction of copper Nov. 11, 2008
7438874 Pressure oxidation leaching in the presence of an acidic solution of halide and sulfate ions from copper and base metal containing ore/concentrate Oct. 21, 2008
7390468 Extraction process Jun. 24, 2008
7309474 Composition and process Dec. 18, 2007

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