Flotation process using metal salts of phosphorus acids

Details Flotation process using metal salts of phosphorus acids Flotation process using metal salts of phosphorus acids

B - Operations, Transporting

03

D

B03D 1/014 (2006.01) B03D 1/02 (2006.01)

Patent

CA 2062768

2062768 9119571 PCTABS00008 The present invention relates to improved process for beneficiating an ore-containing sulfide material. In particular, the process is useful for beneficiating ores and recovering metals such as gold, copper, lead, molybdenum, zinc, etc., from the ores. In one embodiment, the process comprises the steps of: (1) forming a slurry comprising at least one crushed mineral-containing ore, water and a collector which is at least one metal salt of a phosphorus acid represented by formula (I), wherein each R1 is independently a hydrocarbyl, hydrocarbyloxy or hydrocarbylthio group having from 1 to about 18 carbon atoms, each X is independently oxygen or sulfur, and wherein the metal is i) at least one single metal having a lowest oxidation state of plus two or ii) at least one mixture of metals wherein at least one of the metals has a lowest oxidation state of plus two, provided that when the primary mineral is copper, zinc or silver, the metal (i) is other than zinc. (2) subjecting the slurry from step (1) to froth flotation to produce a froth; and (3) recovering a mineral from the froth.

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