Flotation of oxidized copper ores

Details Flotation of oxidized copper ores Flotation of oxidized copper ores

1975-05-27

1977-03-08

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

209166, 423 26, B03D 108, C22B 1500

Patent

active

040110729

ABSTRACT:
Copper is recovered from an aqueous pulp of an ore containing both sulfide minerals and oxidized minerals by continuously monitoring the EMF of the pulp and adding a water-soluble sulfide to the pulp in an amount from 0.05 to 7 pounds of contained sulfur per ton of ore whenever and for so long as the pump EMF is above about -30 millivolts with reference to a standard silver-silver chloride electrode, and discontinuing such addition whenever such EMF in less than about -30 millivolts. Thereafter the pulp is subjected to a froth flotation operation in the presence of a collector for copper sulfide minerals to produce a concentrate containing most of the sulfide minerals and a substantial part of the oxidized minerals of the ore.

REFERENCES:
patent: 3421850 (1969-01-01), Peterson
patent: 3582317 (1971-06-01), Gamo
patent: 3667690 (1969-11-01), Weston
patent: 3735931 (1973-05-01), Weston
patent: 3883421 (1975-05-01), Cutting

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