B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
361/4
B03D 1/02 (2006.01) B03D 1/002 (2006.01) B03D 1/012 (2006.01) B03D 1/06 (2006.01)
Patent
CA 1195442
SEPARATION OF MOLYBDENITE FROM ITS MIXTURE WITH OTHER SULFIDE ORES 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 contact ing the copper concentrate with the trithiocarbonate depres- sants 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.
421616
Andress Carlos
Riggs William F.
Baker Petrolite Corporation
Riches Mckenzie & Herbert Llp
LandOfFree
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