Recovering copper by flotation using N-mercaptoalkyl amide depre

Details Recovering copper by flotation using N-mercaptoalkyl amide depre Recovering copper by flotation using N-mercaptoalkyl amide depre

1980-04-30

1981-10-20

Halper, Robert

Classifying, separating, and assorting solids

Fluid suspension

Liquid

B03D 106

Patent

active

042959624

ABSTRACT:
A process for recovering copper-bearing mineral sulfides from a froth-floated, metallurgical concentrate by admixing the concentrate with a sufficient amount of N-mercaptoalkyl amide to depress the copper-bearing mineral sulfides during a flotation and recovering the non-floating copper-bearing mineral sulfides from the flotation process. In an embodiment, copper-bearing mineral sulfides are subjected to flotation process in the presence of a flotation agent with recovery of floated metallurgical concentrate containing copper-bearing mineral sulfides and thereafter refloating the metallurgical concentrate with admixing with N-mercaptoalkyl amide depressant to recover the non-floating copper-bearing mineral sulfides.

REFERENCES:
patent: 2449984 (1948-09-01), Gibbs
patent: 3006471 (1961-10-01), Luttinger
patent: 3235077 (1966-02-01), McGarry
patent: 3329266 (1967-07-01), Cox
patent: 3788467 (1974-01-01), Werneke
patent: 4196073 (1980-04-01), Gannon

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