COMPOSITION OF FATTY ACIDS AND N-ACYL DERIVATIVES OF SARCOSINE FOR IMPROVED FLOTATION OF NON-SULPHIDE MINERALS Russian patent published in 2018 - IPC B03D1/08 B03D1/01 B03D101/00 B03D103/04 

FIELD: chemistry.

SUBSTANCE: proposed group of inventions relates to a collector composition and its use in direct froth flotation of non-sulfide minerals. Collector composition for direct froth flotation of non-sulphide ores containing a) 50–99 % by weight of a mixture of fatty acids and b) 1–50 % by weight of an N-acyl sarcosine derivative, having the formula (I) (I), where R is a saturated or unsaturated hydrocarbon chain containing 7–21 carbon atoms, where this mixture contains 10.0–35.0 wt.% fatty acid containing a saturated C₁₁ hydrocarbon group, 2.5–15.0 wt.% fatty acid containing a saturated C₁₃ hydrocarbon group, 10.0–25.0 wt.% fatty acid containing monounsaturated C₁₇ hydrocarbon group, and 20.0–45.0 wt.% fatty acid containing di-unsaturated C₁₇ hydrocarbon group. Method of direct froth flotation of non-sulfide minerals, which includes the steps of contacting the above collector composition with an aqueous suspension of a non-sulfide mineral and foaming the mineral pulp thus prepared. Proposed collector composition is used as a collector for direct flotation of non-sulphide ores, in an amount of from 100 to 1,000 grams per ton of ore.

EFFECT: increasing the efficiency of flotation, as well as the yield and/or purity of the mineral.

11 cl, 3 tbl, 3 ex