IMPROVEMENT OF REAGENT REGIMES OF FLOTATION OF SPHALERITE AND PYRITE FROM SILVER COPPER-ZINC AND POLYMETALLIC ORE DEPOSITS

Pyrite copper-zinc (sulfide) and polymetallic ores in Russia are complex and refracto-ry mineral raw materials. The main processing technology for such ores is flotation. Currently, the improvement of the flotation technology of such mineral raw materials is carried out in several directions. It has been established by the practice of enrichment of copper-zinc ores that obtaining high-quality zinc and pyrite concentrates is impossible without the use of various modifiers in the practice of flotation of sphalerite and pyrite. Such reagents are copper (II), zinc and iron (II) sulfates in an alkaline lime environment. Therefore, studies were carried out to float sphalerite and pyrite in an alkaline lime medium with the addition of one of the indicat-ed sulfates to the mineral flotation operation. The effect of each of the sulfates of copper (II), zinc and iron (II) on the flotation of sphalerite and pyrite was studied during flotation of the mineral with butyl xanthate and dithiophosphate at pH = 8, 10, and 12. The aim of this work was to study the effect of sulfhydryl collectors in the presence of copper sulfates , zinc and iron for flotation of sphalerite and pyrite with a size class (-0.074 + 0.044 mm) from one of the Rus-sian deposits.