Process for the recovery of copper and zinc values from sulphidi

Details Process for the recovery of copper and zinc values from sulphidi Process for the recovery of copper and zinc values from sulphidi

1980-03-13

1981-07-21

Hearn, Brian E.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 37, 423 41, 423109, 204119, 75 2, 75120, 209167, C01G 906

Patent

active

042798671

ABSTRACT:
A process for the recovery of copper and zinc values from copper and zinc containing sulphidic ore includes subjecting ground ore to a flotation operation. An initial copper concentrate is floated in a first flotation step, and the initial copper concentrate is fed to a second flotation step to float a relatively zinc free copper concentrate. Remaining ore from the first flotation step is fed to a third flotation step to float an initial zinc concentrate, and remaining ore from the third flotation step is fed to a fourth flotation step to float a copper and zinc containing material. An intermediate concentrate containing from about 5 to about 25% copper and from about 2 to about 25% zinc, with a total of at least about 12% copper and zinc, is produced by selecting at least the remaining ore from the second flotation step, and a zinc concentrate containing at least about 20% zinc is produced by at least selecting a portion of the initial zinc concentrate.

REFERENCES:
patent: 1577328 (1926-03-01), Lewis
patent: 1735190 (1929-11-01), Warren
patent: 1801105 (1931-04-01), Phelan
patent: 2012830 (1935-08-01), Ralston
patent: 2595076 (1952-04-01), Hendrickson
Gandin, Flotation, 2nd Edition, McGraw-Hill, N.Y. (1957) pp. 5-7, 182, 446-449.

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