APPLICATION PROSPECTS OF DOMESTIC DEPRESSOR REAGENT UNDER CARBONACEOUS GOLD-BEARING ORE FLOTATION

Abstract

The PURPOSE of this study is the efficiency test of a domestic depressor reagent under flotation of carbonaceous gold-bearing ores of various deposits. METHODS. Quantitative X-ray fluorescence, phase, atomic absorption, gravimetric and ICP-AES analyzes are used to determine the chemical composition of the ore. The mass fraction of the organic form of carbon is measured by the LecoSC-144 DR determinator. Gold content is determined using the assay-gravimetric analysis. Flotation feed is prepared using the Knelson KC-MD3 centrifugal concentrator. The flotation studies are carried out using gravity tailings and flotation machines of a mechanical type. RESULTS AND THEIR DISCUSSION. The study results show that the use of carbon suppressant reagent in flotation concentration increases the flotation concentrate quality by the gold content, while preserving the recovery level of the valuable component. It also contributes to the reduction in the yield of the flotation concentrate by decreasing the mass fraction of organic carbon and rock-forming minerals of the ore. CONCLUSIONS. The conducted study has found out the domestic reagent to be an effective depressant of a carbonaceous substance under flotation concentration. This fact allows to talk about its prospective use under flotation of carbonaceous gold-bearing ores.