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Class Information
Number: 423/26
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Group ib metal (cu, ag, or au) > Flotation
Description: Processes which include the step of floating or causing concentrated metal values of the mixture to rise to the top and to be skimmed off while the earthy portions of the ore are permitted to settle; see Glossary.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8685350 Method for separating arsenic mineral from copper-bearing material with high arsenic grade Apr. 1, 2014
8383070 Method for recovering rhenium and other metals from rhenium-bearing materials Feb. 26, 2013
8257671 Method of leaching copper sulfide ore Sep. 4, 2012
8221709 Hardwood lignosulfonates for separating gangue materials from metallic sulfide ores Jul. 17, 2012
8088347 Process for recovering copper sulphide from copper bearing ores by froth flotation Jan. 3, 2012
8025859 Process for gold and silver recovery from a sulphide concentrate Sep. 27, 2011
7922788 Process for recovering gold and silver from refractory ores Apr. 12, 2011
7811534 Method for the treatment of copper-bearing materials Oct. 12, 2010
7666371 Method for recovering metal values from metal-containing materials using high temperature pressure leaching Feb. 23, 2010
7576244 Compounds and compositions for use as foaming or frothing agents in ore and coal flotation Aug. 18, 2009
7491372 Procedure to leach copper concentrates, under pressure and at ambient temperature, by forming a reactive gel in a sulfate-chloride medium Feb. 17, 2009
7482495 Process for making alkylene glycol ether compositions useful for metal recovery Jan. 27, 2009
7435405 Anti-oxidation method for sulfide minerals in sulfide ore Oct. 14, 2008
7387767 Recovery of nickel, cobalt, iron, silica, zinc and copper from laterite ore by sulfuric acid leaching Jun. 17, 2008
7219804 Flotation processing including recovery of soluble nonferrous base metal values May. 22, 2007
7018593 Base metal recovery from a tailings dump by bacterial oxidation Mar. 28, 2006
6965629 Method and apparatus for initiating a pulsed arc discharge for nanopowder synthesis Nov. 15, 2005
6953120 Method of recovering metal and/or oxide thereof in a slurry and tailings obtained from said method Oct. 11, 2005
6875254 Methods for detecting and extracting gold Apr. 5, 2005
6680034 Method for recovering metal values from metal-containing materials using high temperature pressure leaching Jan. 20, 2004
H2082 Oxidized normal paraffinic products and their application Sep. 2, 2003
6251163 Method for recovering gold from refractory carbonaceous ores Jun. 26, 2001
6210648 Method for processing refractory auriferous sulfide ores involving preparation of a sulfide concentrate Apr. 3, 2001
6200377 Process for beneficiation of mixtures of mineral particles Mar. 13, 2001
5902977 Flotation cell and method May. 11, 1999
5837210 Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate Nov. 17, 1998
5807479 Process for recovering copper from copper-containing material Sep. 15, 1998
5795465 Process for recovering copper from copper-containing material Aug. 18, 1998
5792235 Method for recovering gold and other precious metals from carbonaceous ores Aug. 11, 1998
5770170 Recovery of zinc from sulphidic concentrates Jun. 23, 1998
5653945 Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate Aug. 5, 1997
5443621 Method for recovering gold and other precious metals from carbonaceous ores Aug. 22, 1995
5348713 Recovery of metal values from zinc plant residues Sep. 20, 1994
5320759 Selective recovery of heavy metals using xanthates Jun. 14, 1994
5108495 Method controlling a process by impedance analysis Apr. 28, 1992
5074993 Flotation process Dec. 24, 1991
5013359 Process for recovering gold from refractory sulfidic ores May. 7, 1991
4895597 Recovery of precious metals Jan. 23, 1990
4879022 Ore flotation process and use of mixed hydrocarbyl dithiophosphoric acids and salts thereof Nov. 7, 1989
4853114 Method for the depressing of hydrous, layered silicates Aug. 1, 1989
4851036 Mineral ore flotation process and apparatus Jul. 25, 1989
4797202 Froth flotation method Jan. 10, 1989
4793852 Process for the recovery of non-ferrous metal sulfides Dec. 27, 1988
4786318 Thickening of gold process slurries Nov. 22, 1988
RE32786 Neutral hydrocarboxycarbonyl thiourea sulfide collectors Nov. 22, 1988
4747940 Ore flotation and tri-alkali metal-di(carboxyalkyl) dithiocarbamate and triammonium-di(carboxyalkyl) dithiocarbamate flotation agents for use therein May. 31, 1988
4744893 Polymeric sulfide mineral depressants May. 17, 1988
4735783 Process for increasing the selectivity of mineral flotation Apr. 5, 1988
4710361 Gold recovery by sulhydric-fatty acid flotation as applied to gold ores/cyanidation tailings Dec. 1, 1987
4663279 Method of beneficiation of complex sulfide ores May. 5, 1987

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