METHOD OF CONCENTRATION OF GOLD-CONTAINING PRODUCTS Russian patent published in 1997 - IPC

FIELD: mineral concentration. SUBSTANCE: method includes feed of initial supply to hydraulic classification in hydraulic cyclone, separation of overflow and sands, return of sands to operation of hydraulic classification, stopping of feed of initial supply upon expiration of the preset time, further hydraulic classification of circulating product to obtain the preset grade of concentration of noble metals. Taken as upper limit of the preset value of fraction of total mass of solid matter in supply of hydraulic cyclone is 50%. The amount of supplied water is determined from condition β_solid ≅ , where β_solid is current value of solid fraction of total mass in supply of hydraulic cyclone; is preset value of solid fraction of total mass in supply of hydraulic cylinder. EFFECT: higher efficiency. 2 dwg, 1 tbl