Sequential and selective flotation of sulfide ores

Details Sequential and selective flotation of sulfide ores Sequential and selective flotation of sulfide ores

B - Operations, Transporting

03

D

B03D 1/02 (2006.01) B03D 1/002 (2006.01) B03D 1/014 (2006.01) B03D 1/016 (2006.01) B03D 1/06 (2006.01)

Patent

CA 2053388

A sequential flotation process for the separation of components of a sulfide ore selected from the group consisting of copper and lead sulfide containing ores and copper, zinc and lead sulfide containing ores in which the copper component is initially selectively floated directly from said ore by conditioning the ore with a combination of a source of bisulfite ion and causticized starch to produce a conditioned ore having a pH between approximately 5.7 and 6.5, and thereafter treating the conditioned ore with a collector selected from the group consisting of dialkyl dithiophosphates and alkyl dithiophosphinates.

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