Abstract: In light of the characteristics of a high calcium scheelite ore, a process is tested which includes the separation of coarse tungsten concentrate by gravity separation after the primary grinding and the production of fine tungsten concentrate by normal temperature flotation and heated flotation of the tailings of the said gravity separation after their regrinding and combination with slime. The concentrate of gravity separation has a WO₃ grade of 68.93% at a recovery of 82.71%; the flotation concentrate has WO₃ grade of 6.7% at a recovery of 9.34％ and the combined concentrate ,WO₃ grade of 68.7％ at a WO₃ recovery as high as 92.05％, indicating fine test results.

Key words: Scheelite, High calcium gangue, Gravity separation, Normal temperature flotation, Heated flotation