Abstract: In order to realize the efficient utilization of tungsten resources in a tungsten polymetallic ore in Hunan Province，aiming at the problem that the ore elements and mineral composition of different ore belts are quite different，which affects the adaptability of the existing tungsten beneficiation process， based on the current wolframite and scheelite mixed flotation process，the tungsten beneficiation process optimization of ore samples in each ore belt is carried out.The effects of grinding fineness and dosage of wa‐ ter glass and soda ash on flotation indexes are investigated. The test results show that the existing wolfram‐ ite and scheelite mixed flotation process has good adaptability to the ore in each ore belt，and the recovery rate of tungsten coarse concentrate is more than 70%.However，the enrichment ratio of tungsten rough con‐ centrate for high calcium and high sulfur ores such as 4# and 5# is relatively low（only 5～6 times），indi‐ cating that calcium-containing gangue minerals such as calcite and sulfide may have adverse interference on tungsten flotation，and the separation process needs to be further optimized.

Key words: greisen-skarn composite tungsten polymetallic deposit, flotation, ore blending, ore belt difference