METHOD FOR FLOTATION SEPARATION OF COLLECTIVE ZINC-PYRITE CONCENTRATES Russian patent published in 2016 - IPC B03D1/02 B03B7/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to beneficiation of minerals and can be used for flotation of polymetallic and copper-zinc ores. Method for flotation separation of collective zinc-pyrite concentrates involves obtaining bulk zinc-pyrite concentrate from sulphide ores, carried out in an alkaline medium formed by lime, steaming and pulp conditioning with copper sulphate, xanthate and foaming agent, flotation of zinc minerals into a foam product. Foam product of primary zinc flotation arrives into cycle of additional grinding, including operation of classification and regrinding. Lime is fed for grinding. Crushed material is fed into operation of thickening and washing or in operation of mechanical activation and then in operation of thickening and washing. Condensed product arrives into operation of running and then in cleaner operation.

EFFECT: technical result is higher efficiency and intensification of process of separation of zinc-pyrite concentrates.

1 cl, 2 dwg, 1 tbl, 3 ex