Аннотация
The purpose of work - flotation processing of copper-lead-zinc tailings using a modified collector - a mixture of modified butyl xanthate and aeroflot in combination with N-allyl-o-isobutylthionocarbamate. According to the results of X-ray fluorescence analysis in the initial sample of flotation enrichment tailings, the content of lead was 0.048%, copper - 0.03%, zinc - 1.501%, iron - 2.863%. The main part of tailings is represented by rock-forming minerals: quartz, calcite, talc, chrysotile, albite, clinochlore, muscovite, dolomite, and pyrite. The optimal basic reagent scheme of tailings flotation was selected: degree of regrind 78% of -0.040 mm class, sodium butyl xanthate consumption 150 g/t, T-92 frother consumption 80 g/t. Under the selected regime, a collective copper-lead-zinc concentrate was obtained containing 2.0% copper at 67.11% recovery; 1.6% lead at 62.02% recovery; 3.2% zinc at 62.02% recovery; 7.0% iron at 41.67% recovery; 4.1 g/t gold at 54.45% recovery. The reagent scheme of flotation of copper-lead-zinc tailings with the application of a modified collector was tested. Its application allows for increased recovery in the collective copper-lead-zinc concentrate: copper - by 9.63%, lead - by 8.41%, zinc - by 9.2%, iron - by 2.73%, gold - by 3.57%. At the same time the consumption of modified collector, compared to butyl xanthate, is reduced by 33%, and the consumption of basic foaming agent T-92 is reduced by 25%.