EXTRACTING ULTRAFINE GOLD PARTICLES FROM STEERING CARBON ORE METHOD Russian patent published in 2018 - IPC B03D1/02 

FIELD: mining.

SUBSTANCE: invention relates to the field of mineral processing and can be used in the mining and dressing industry for the enrichment of gold-bearing carbonaceous ores. Method of extracting ultrafine gold particles from persistent carbonaceous ores includes conditioning the pulverized pulp in the presence of a main collector and a complexing agent selective to noble metals, introduction of a blowing agent and the liberation of precious metals into a foam product of flotation. As a gold-containing product, tails of sulfide flotation are used which are put to flotation for 5 to 7 minutes using kerosene as a collector, as a depressant of an empty rock, liquid glass, as a foaming agent, selectively acting methylisobutylcarbinol. Then, the dried tails are subjected to microwave treatment with a power of 1.0 to 1.5 kW for 15 to 25 minutes to produce a carbonaceous concentrate containing ultrafine gold individuals.

EFFECT: increasing extraction of utrafine gold from persistent gold-bearing ores.

1 cl, 3 dwg, 2 tbl