METHOD OF TREATING TUNGSTEN-MOLYBDENUM CONCENTRATES Russian patent published in 1995 - IPC

FIELD: metallurgy. SUBSTANCE: the method comprises autoclave-soda leaching, directly sulfiding the leaching solution by adding a sulfide-containing agent to the solution, cleaning the solution of silicon and molybdenum impurities by deposition of silicic acid and extraction of molybdenum with a salt to the saturation of the extracting agent by 90-95%. The method improves the degree of cleaning, reduces the amount of sulfide salts used and improves ecology. EFFECT: improved method treatment. 1 tbl