Separation of molybdenite from its mixture with other sulfide or

Details Separation of molybdenite from its mixture with other sulfide or Separation of molybdenite from its mixture with other sulfide or

1982-02-16

1984-01-10

Nozick, Bernard

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209166, 252 61, B03D 114

Patent

active

044252307

ABSTRACT:
Dithiocarbonic acid, trithiocarbonic acid, water soluble salts of dithiocarbonic acid or trithiocarbonic acid or mixtures thereof when contacted with a mixed sulfide ore effectively depresses copper and iron sulfides thereby permitting molybdenite to be recovered by froth flotation. In copper concentrates produced by a flotation process, the organic collector reagents adhering to the surface of the copper and iron sulfides may be, and preferably are, stripped by conventional physical or chemical means prior to contacting the copper concentrate with the trithiocarbonate depressants of the invention. However, the trithiocarbonates of the invention have been found to be effective depressants of copper and iron sulfides in concentrates which are not stripped prior to treatment with the depressant.

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"Molybdenite Flotation"-U.S. Dept. of Commerce-4/28/78-(which is the publication of U.S. Pat. Appln. S.N. 900,830).

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