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Class Information
Number: 423/147
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Iron group metal (fe, co, or ni) > Forming insoluble substance in liquid > Sulfating > Halogenating, hydroxylating, or hydrating
Description: Processes including the step of chemically forming a hydroxide, or a hydrate or a compound containing a halogen element.

Patents under this class:

Patent Number Title Of Patent Date Issued
8241594 Processes for extracting aluminum and iron from aluminous ores Aug. 14, 2012
8038979 Metal oxide nano powder and manufacturing method of the same Oct. 18, 2011
7998452 Spherical tricobalt tetraoxide and method of preparing the same Aug. 16, 2011
7910085 Process for production of iron oxyhydroxide particles Mar. 22, 2011
7871584 Consecutive or simultaneous leaching of nickel and cobalt containing ores Jan. 18, 2011
7695707 Iodizing agent and process for preparation thereof Apr. 13, 2010
7470647 Nickel oxide nanoparticles as catalyst precursor for hydrogen production Dec. 30, 2008
7118719 Method for the hydrolytic precipitation of iron Oct. 10, 2006
6524546 Process for making calcium chlorides Feb. 25, 2003
6409979 Selective precipitation of nickel and cobalt Jun. 25, 2002
6379637 Direct atmospheric leaching of highly-serpentinized saprolitic nickel laterite ores with sulphuric acid Apr. 30, 2002
6319483 Gallium and/or indium separation and concentration method Nov. 20, 2001
6274104 Non-ferrous metal recovery method utilizing a melt sulphation reaction Aug. 14, 2001
6270738 Process for preparing usable products from an impure ferric sulfate solution Aug. 7, 2001
5558706 Corrosion inhibiting pigment composition Sep. 24, 1996
5487779 Corrosion inhibiting pigment composition and method Jan. 30, 1996
5324500 Method for processing residues of barium sulfide or strontium sulfide leaching Jun. 28, 1994
5271910 Process of treating metal chloride wastes Dec. 21, 1993
5171549 Process for decreasing the level of impurities in zirconium chloride, titanium chloride and hafnium chloride Dec. 15, 1992
5074910 Process for recovering precious metals from sulfide ores Dec. 24, 1991
4872909 Process for acid leaching of manganese oxide ores aided by hydrogen peroxide Oct. 10, 1989
4718995 Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material Jan. 12, 1988
4671945 Method for separation and leaching of the valuable metals in sulphide materials Jun. 9, 1987
4670229 Cyclic process for recovering metal values and alumina from spent catalysts Jun. 2, 1987
4666685 Selective extraction of molybdenum and vanadium from spent catalysts by oxidative leaching with sodium aluminate and caustic May. 19, 1987
4626280 Recovery of tungsten, scandium, iron, and manganese from tungsten bearing material Dec. 2, 1986
4610722 Process for metal recovery from steel plant dust Sep. 9, 1986
4608084 Recovery of cobalt and chromium Aug. 26, 1986
4435369 Hydrometallurgical process for extraction of nickel Mar. 6, 1984
4431613 Leaching of sulphidic mattes containing non-ferrous metals and iron Feb. 14, 1984
4394357 Separation of cobalt and nickel by oxidative precipitation with peroxymonosulfuric acid Jul. 19, 1983
4301125 Extraction of pre-reduced lateritic ores with aqueous sulphuric acid in the presence of peroxidant Nov. 17, 1981
4298379 Production of high purity and high surface area magnesium oxide Nov. 3, 1981
4230487 Method of selectively bringing into solution the non-ferrous metals contained in sulphurized ores and concentrates Oct. 28, 1980
4207201 Process for the manufacture of an aqueous iron (III)-chloride-sulfate solution Jun. 10, 1980
4067952 Leaching of copper-nickel concentrates Jan. 10, 1978
4008076 Method for processing manganese nodules and recovering the values contained therein Feb. 15, 1977

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