This experiment takes the high-sulfur bauxite in Guizhou as the research object,and carries out the ore property analysis and condition test study.The effects of grinding fineness,inhibitor dosage,activator dosage,collector dosage and foaming agent dosage on flotation index were investigated.The test results show that the fineness of bauxite grinding is 75％(percentage represented by-0.074 mm particle size,the same hereinafter),the a-mount of inhibitor is 2 000 g/t,the amount of activator is 100 g/t,the amount of collector is 800 g/t,and the amount of foaming agent is 1/3 of the a-mount of collector.Through the process of"one coarse,three fine and three sweeping",the aluminum concentrate with a yield of 86.35％and S content of 0.45％can be obtained.It can meet the requirements of alumina production process.
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