Аңдатпа
Abstract The processing of increasingly complex sulphide ores with difficult mineralogical compositions requires a careful selection of flotation reagents, their optimal preparation and rational combination of various collectors. This work investigates the colloid–chemical properties of reagent systems based on a sulphur-containing product as well as its mixtures with aeroflot and sodium butyl xanthate in various ratios. Measurements of the contact angle and zeta potential were taken on monomineral copper, lead, zinc and iron. At a ratio of [sulphur-containing product (SP)]:[sodium butyl xanthate (BX)]:[sodium butyl dithiophosphate (BTP)] = 1:1:1, the maximum hydrophobicity values were recorded: 96.79° for chalcopyrite, 99.22° for galena, 78.23° for pyrite and 60.03° for sphalerite. Flotation tests showed that the use of a sulphur-containing collector based on [refined oil (RO)]:[sulphur-containing product (SP)]:[sodium butyl xanthate (BX)] = 0.8:0.2:1 at a consumption rate of 120 g/t in combination with BTP (120 g/t) in a closed cycle increases the extraction of copper in the rough collective concentrate by 15.25% lead by 12.21% and zinc by 8.94% compared to traditional reagents. The results obtained confirm the high efficiency of the developed collector for the beneficiation of complex sulphide ores.