氧化亚铁硫杆菌通常用于生物浸出中,最近用于硫化矿物的生物选矿中。在本研究中,就氧化亚铁硫杆菌对伊朗Sarcheshmeh铜矿石泡沫浮选行为的影响进行了研究,使用纯的氧化亚铁硫杆菌菌株可促进黄铁矿和黄铜矿的表面化学变化,从而影响它们的浮选行为。在氧化亚铁硫杆菌存在和用黄药作捕收剂时,在自然pH下黄铁矿受到抑制,而黄铜矿及其他硫化物矿物可浮性不受影响。本研究结果表明,细菌的表面化学性质能成功加以控制,从而获得对浮选过程的预期影响。这些结果表明,有抑制剂(氧化亚铁硫杆菌)存在时,黄铁矿的回收率比不存在这种细菌时低50%,结果证实了细菌对黄铁矿的抑制效果。可以得出以下结论,使用氧化亚铁硫杆菌将减低黄铁矿的回收率,但黄铜矿的可浮性不会改变。 Thiobacillus ferrooxidans are commonly used in bioleaching, most recently in bio-beneficiation of sulfide minerals. In this study, the effect of Thiobacillus ferrooxidans on the froth flotation of Sarcheshmeh copper ore in Iran was investigated. Using pure strains of Thiobacillus ferrooxidans promoted the surface chemical changes of pyrite and chalcopyrite, Thus affecting their flotation behavior. In the presence of Thiobacillus ferrooxidans and the use of xanthate as a collector, pyrite is inhibited at natural pH, while chalcogenide and other sulfide minerals are not affected by floatability. The results of this study show that the surface chemistry of bacteria can be successfully controlled to obtain the expected effect on the flotation process. These results indicate that the recovery of pyrite in the presence of the inhibitor (Thiobacillus ferrooxidans) is 50% lower than in the absence of this bacterium, confirming the bacterial inhibitory effect on pyrite. It can be concluded that the use of Thiobacillus ferrooxidans will reduce the recovery of pyrite, but the chalcogenide of chalcopyrite will not change.