Abstract: Aiming at the difficulty in utilizing high sulfur bauxite，beneficiation experiments of desulfurization by reverse flotation and desilication by aggregation flotation and an efficient bauxite collector of ZY-01were carried on the high sulfur bauxite in Guangxi.The aluminum concentrate with alumina-silica ratio 7.38，alumina grade of 63.31%，recovery of 78.52% and the sulfur concentrator with 16.78% sulfur and recovery of 80.72% were obtained through the desilication reverse flotation process of one roughing-one cleaning-one scavenging and aggregation flotation process of one roughing-two cleaning-two scavenging.The aluminum concentrate can meet the production requirements for alumina oxide.

Key words: High sulfur bauxite, Reverse flotation, Aggregation flotation, Collector ZY-01, Alumina-silica ratio