METHOD OF GOLD-CONTAINING CARBONACEOUS ORES PROCESSING Russian patent published in 2018 - IPC B03D1/02 

FIELD: mining.

SUBSTANCE: invention relates to the field of enrichment, in particular to the carbonaceous gold-bearing ores processing. Method includes the flotation feed treating with a modifier, followed by treatment with a collector and a foaming agent. As a modifier, a sodium naphthalenesulfonate is used, which includes sodium lignosulfonate, at that, the modifier contains 7–10 % of sodium sulfate, about 80 % of polymethylene naphthalenesulfonate and 8–10 % of sodium lignosulfonate. Modifier flow rate depends on the carbonaceous matter form of presence and the weight fraction in the ore and it is selected experimentally. Flotation feed treatment with a modifier reagent is carried out until the circulating products are supplied into the process.

EFFECT: decrease in the flotation concentrate sorption activity, a decrease in the organic carbon weight fraction in the flotation concentrate, and an increase in the gold content therein.

4 cl, 1 dwg, 2 tbl, 3 ex