METHOD OF DRESSING GOLD-CONTAINING PRODUCTS Russian patent published in 2016 - IPC B03B7/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to dressing minerals and can be used in gold mining and non-ferrous metallurgy in dressing products containing free particles of gold, silver, platinum. Method of dressing gold-containing products involves feeding initial supply and water into the operation of hydraulic classification in a hydraulic cyclone, extraction of discharge and sands, return of sands into the operation of hydraulic classification, stop of initial supply feeding after a preset time interval, feeding water and sands of the hydrocyclone into the operation of hydraulic classification to reach in the sands a given degree of concentration of noble metals, production of the dressed product in the form of sands of the hydrocyclone. Sands of the hydrocyclone after stop of initial supply feeding during circulation are subjected to screening with removal to the oversize fraction of coarse particles of waste rock.

EFFECT: provided is higher degree of concentration of noble metals in sands of the hydrocyclone due to removal from the circulating product of coarse particles of waste rock, as well as higher efficiency.

1 cl, 2 dwg, 1 tbl