METHOD FOR CONCENTRATION OF SULPHIDE PYRRHOTITE-CONTAINING ORES Russian patent published in 2024 - IPC B03B7/00 B03D1/02 

FIELD: enrichment of minerals.

SUBSTANCE: proposed invention can be used in processing of mineral raw material containing pyrrhotite. Method for concentration of sulphide pyrrhotite-containing ores includes main, recleaning operations in a cycle of collective copper-zinc flotation, main, control, two cleaning operations in copper flotation cycle. In addition, a zinc flotation cycle is carried out, which includes the main, control and one recleaning operations. In copper flotation cycle one additional recleaning flotation operation is performed. Hydrogen peroxide is added to the collective recleaning operation of flotation, to the first and second recleaning operations of copper flotation, to the main zinc flotation and to recleaning zinc flotation. Hydrogen peroxide is added to collective cleaner flotation in amount of 200–300 g/t of initial ore. In the first cleaning copper flotation and in the cleaning zinc flotation hydrogen peroxide is added in amount of 50 to 100 g/t of initial ore. In the second cleaning copper flotation hydrogen peroxide is introduced in amount of 50 to 150 g/t of initial ore. Hydrogen peroxide is added to the main zinc flotation in amount of 100 to 150 g/t of initial ore.

EFFECT: increased efficiency of flotation concentration of sulphide copper-zinc pyrrhotite-containing ores, increased rate of flotation of copper and zinc minerals, increased level of copper and zinc extraction into concentrates of the same name.

1 cl, 4 tbl