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Class Information
Number: 423/48
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Group ib metal (cu, ag, or au) > Forming sulfide or matte
Description: Processes which include forming a sulfide compound or a mixture of sulfides known as a matte.

Patents under this class:

Patent Number Title Of Patent Date Issued
8088353 Group II metal sulfide phosphor precursor and method for producing phosphor Jan. 3, 2012
8071181 Metal nanoparticle and use thereof for inducing chirality in liquid crystal phases Dec. 6, 2011
7968065 Process for the recovery of value metals from base metal sulfide ores Jun. 28, 2011
7575629 Pollutant emission control sorbents and methods of manufacture Aug. 18, 2009
7022469 Silver halide photographic light-sensitive material Apr. 4, 2006
6911570 Method for fixating sludges and soils contaminated with mercury and other heavy metals Jun. 28, 2005
5672328 Method and apparatus for removing silver in the form of silver salts from a liquid Sep. 30, 1997
5498398 Method of treating spent electrolytic solution from electrolytic copper production Mar. 12, 1996
5238662 Processes for recovering precious metals Aug. 24, 1993
5178842 Method for precipitating and separating metals Jan. 12, 1993
5176802 Treatment of copper sulfide concentrates Jan. 5, 1993
5074910 Process for recovering precious metals from sulfide ores Dec. 24, 1991
5013355 Method and apparatus for producing matte and/or metal May. 7, 1991
4891061 Process for treating speiss Jan. 2, 1990
4857104 Process for reduction smelting of materials containing base metals Aug. 15, 1989
4665842 Apparatus for producing ignitable solids-gas suspensions May. 19, 1987
4561884 Apparatus for removal of impurity components from sulphidic and metallized molten copper mattes Dec. 31, 1985
4511540 Exploitation of copper, nickel and cobalt by treating manganiferous matrix oxidized ores Apr. 16, 1985
4504309 Process and apparatus for continuous converting of copper and non-ferrous mattes Mar. 12, 1985
4431614 Process for the separation of gold and silver from complex sulfide ores and concentrates Feb. 14, 1984
4423011 Selective recovery of base metals and precious metals from ores Dec. 27, 1983
4415356 Process for autogenous oxygen smelting of sulfide materials containing base metals Nov. 15, 1983
4394164 Process for removal of harmful impurities from metallurgical sulphide melts Jul. 19, 1983
4385038 Flotation recovery of lead, silver and gold as sulfides from electrolytic zinc process residues May. 24, 1983
4377410 Chromium recovery from superalloy scrap by selective chlorine leaching Mar. 22, 1983
4323541 Selective two stage leaching of nickel from nickel-copper matte Apr. 6, 1982
4304596 Process for a sulfidizing pretreatment of the slag of pyrometallurgical processes in order to facilitate its further treatment Dec. 8, 1981
4289530 Symmetrical quaternary ammonium compounds and their use in heavy metals recovery Sep. 15, 1981
4278539 Method for removing heavy metals from aqueous liquids Jul. 14, 1981
4274870 Smelting of copper concentrates by oxygen injection in conventional reverberatory furnaces Jun. 23, 1981
4260588 Production of sulphidic copper concentrates Apr. 7, 1981
4241031 Dissolution of nickeliferous sulfide material in HCl Dec. 23, 1980
4236915 Process for oxygen sprinkle smelting of sulfide concentrates Dec. 2, 1980
4169725 Process for the refining of sulfidic complex and mixed ores or concentrates Oct. 2, 1979
4157912 Process for recovery of copper and zinc from complex sulphides Jun. 12, 1979
4127639 Process for recovering silver from residues containing silver and lead Nov. 28, 1978
4049438 Non-ferrous metal recovery from deep sea nodules Sep. 20, 1977
4045211 Method for increasing radiant heat transfer from hot gases Aug. 30, 1977
4004990 Process for separating and recovering nickel and cobalt Jan. 25, 1977
3988149 Metallurgical process using oxygen Oct. 26, 1976
3985555 Decomposition of chalcopyrite Oct. 12, 1976
3962051 Atmospheric leaching of matte containing iron Jun. 8, 1976

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