Pyrite depressant useful in flotation separation

Details Pyrite depressant useful in flotation separation Pyrite depressant useful in flotation separation

1997-06-17

1998-12-08

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, B03D 1012, B03D 106

Patent

active

058464077

ABSTRACT:
The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depression of pyrite with from about 0.125 to 1.250 pounds per ton of 2-S thironium-ethane sulfonate (IESA) as a pyrite depressant. The aforementioned depressant is surprisingly effective in pyrite removal, being substantially independent of the pH values of the treated ore or coal, compatible with conventional collector reagents such as xanthates in the case of copper sulfide bearing ores as well as being substantially unobtrusive in not depressing other useful ore sulfides, including but limited to chalcopyrite, bornite, chalcosite, etc.

REFERENCES:
patent: 2336868 (1943-12-01), Jayne
patent: 3093666 (1963-06-01), Du Brow
patent: 3220839 (1965-11-01), Herz
patent: 3414128 (1968-12-01), Baarson
patent: 3426896 (1969-02-01), Baarson
patent: 5560814 (1996-10-01), Burkhart

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