Process for benefication of fluorspar ores

Details Process for benefication of fluorspar ores Process for benefication of fluorspar ores

B - Operations, Transporting

03

D

361/8

B03D 1/02 (2006.01) B03D 1/002 (2006.01)

Patent

CA 1132267

ABSTRACT PROCESS FOR BENEFICATION OF FLUORSPAR ORES An improvement is provided in a process for the flotation of an acid grade fluorspar enriched con- centrate, having a sulfide sulfur content not greater than about 0.02%, from a fluorspar ore containing in addition to fluorspar substantial amounts of gangue minerals and metallic sulfide accessory minerals. The invention utilizes in this conventional flotation process an alkali metal sulfide, preferable sodium sulfide, as a depressor reagent, in substitution of environmentally objectionable sodium cyanide, to depress the flotation of metallic sulfide minerals, thereby rendering a flotation concentrate low in sulfide sulfur content while substantially reducing associated environmental effects.

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