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Class Information
Number: 423/145
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Iron group metal (fe, co, or ni) > Forming insoluble substance in liquid > Utilizing or forming nitrogenous compound > Sulfating
Description: 2-

Patents under this class:

Patent Number Title Of Patent Date Issued
8241594 Processes for extracting aluminum and iron from aluminous ores Aug. 14, 2012
7871584 Consecutive or simultaneous leaching of nickel and cobalt containing ores Jan. 18, 2011
7470647 Nickel oxide nanoparticles as catalyst precursor for hydrogen production Dec. 30, 2008
6949232 Producing cobalt (III) hexammine sulfate from nickel cobalt sulfides Sep. 27, 2005
6391089 Acid leaching of nickel laterite ores for the extraction of their nickel and cobalt values May. 21, 2002
6340450 Method for leaching zinc concentrate in atmospheric conditions Jan. 22, 2002
6267800 Process for producing cobalt metal powder from nickel-cobalt sulphides Jul. 31, 2001
6264904 Process for recovery of cobalt by selective precipitation of cobalt-calcium double salt Jul. 24, 2001
5468281 Process for the separation of cobalt from nickel Nov. 21, 1995
5332560 Process for the removal of zinc and nickel from copper ammine sulfate solutions Jul. 26, 1994
5332565 Manufacture of ferric sulphate compounds Jul. 26, 1994
5194240 Manufacture of ferric sulphate Mar. 16, 1993
5194241 Manufacture of hydroxylated ferric sulphate compound Mar. 16, 1993
5188713 Process for recovery of metal Feb. 23, 1993
5082638 Process of recovering non-ferrous metal values, especially nickel, cobalt, copper and zinc, by using melt and melt coating sulphation, from raw materials containing said metals Jan. 21, 1992
4954322 Process for the recovery of metal values contained in a gangue Sep. 4, 1990
4872909 Process for acid leaching of manganese oxide ores aided by hydrogen peroxide Oct. 10, 1989
4861371 Nickel-containing leachate having low aluminum content Aug. 29, 1989
4816236 Recovery of vanadium and nickel from petroleum residues Mar. 28, 1989
4637920 Process for the separation of metal compounds by reduction Jan. 20, 1987
4554138 Leaching metals from spent hydroprocessing catalysts with ammonium sulfate Nov. 19, 1985
4552629 Electrogalvanizing utilizing primary and secondary zinc sources Nov. 12, 1985
4208380 Process for the recovery of cobalt from its impure, aqueous, in particular nickel-bearing, solutions and catalyst therefor Jun. 17, 1980
4201748 Process for thermal-activation of chalcopyrite-pyrite concentrates May. 6, 1980
4193970 Process for the precipitation of iron as jarosite Mar. 18, 1980
4192852 Process for precipitating iron as jarosite with a low non-ferrous metal content Mar. 11, 1980
4150095 Recovering magnetite and ammonium sulphate from ammonium jarosite Apr. 17, 1979
4118221 Copper recovery from sulfate solutions containing nickel and cobalt Oct. 3, 1978
4108640 Hydrometallurgical process for the production of cobalt powder from mixed metal sulphides Aug. 22, 1978
4024218 Process for hydrometallurgical upgrading May. 17, 1977
4009101 Recycle treatment of waste water from nickel plating Feb. 22, 1977
3984312 Process for insolubilizing potentially water pollutable wastes from sodium or ammonium type sulfur dioxide air pollution control systems Oct. 5, 1976
3967957 Aqueous ammonia oxidative leach and recovery of metal values Jul. 6, 1976
3964901 Production of copper and sulfur from copper-iron sulfides Jun. 22, 1976
3959437 Hydrometallurgical process for the recovery of zinc, copper and cadmium from their ferrites May. 25, 1976
3933975 Nickel-cobalt separation Jan. 20, 1976
3933976 Nickel-cobalt separation Jan. 20, 1976

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