Abstract: According to the characteristics of fine-grained disseminated scheelite in run-of-mine, the scheelite was concentrated by adopting the full flotation process with sodium carbonate as regulator agent, sodium silicate as inhibitor for the gangue minerals, and ZL Pharmacy as collector. 32.34% of the coarse scheelite concentrate (WO₃) with tungsten recovery of 95.32% was obtained from the raw ores with grade of 1.43%. Through the comparison tests between concentration at normal temperature and heating temperature, it was determined to concentrate the rough tungsten by heating, by which the high-quality scheelite with tungsten (WO₃) of 66.16% and tungsten concentrate recovery of 91.78% was obtained.

Key words:  Scheelite, Fine dissemination, Full flotation, Heating concentration