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迄今仅有矿质化学营养细菌 (如氧化铁硫杆菌 )被用来作硫化矿的生物选矿研究。在本文中 ,对比研究了矿质化学营养细菌 (氧化铁硫杆菌 )和异养型细菌 (P 多粘牙胞杆菌 )对黄铜矿和黄铁矿浮选的影响。用氧化铁硫杆菌和P 多粘牙胞杆菌的纯菌种以及被矿物驯服的这些菌种来促使黄铁矿和黄铜矿表面化学性质变化 ,因此影响了它们的浮选特性。细菌的表面化学特性通过动电位和红外光谱来测量 ,并且在研究时参考它们的浮选反应。在氧化铁硫杆菌和被黄铜矿驯服的P 多粘牙胞杆菌细胞存在时 ,黄药浮选黄铁矿的反应被抑制 ,而黄铜矿的浮选却不受影响。本试验证明 ,细菌的表面化学特性能够成功地调控 ,以便用来获得理想的浮选效果。
To date, only mineral chemical nutrient bacteria (such as Thiobacillus ferrooxidans) have been used as bio-beneficiation studies for sulphide ores. In this paper, we compared the effects of mineralized nutrient bacteria (Thiobacillus ferrooxidans) and heterotrophic bacteria (Bacillus marinus) on flotation of chalcopyrite and pyrite. Pure species of Thiobacillus ferrooxidans and P-polycarbosarcoma, as well as those species that are tamed by minerals, contribute to the surface chemistry of pyrite and chalcopyrite, thus affecting their flotation characteristics. The surface chemical properties of bacteria were measured by potentiodynamic and infrared spectroscopy, and their flotation reaction was referenced at the time of the study. In the presence of Thiobacillus ferrooxidans and P-cellobiotypic cells that are tamed by chalcopyrite, the reaction of the xanthate flotation pyrite is inhibited, while chalcopyrite flotation is unaffected. This experiment demonstrates that the surface chemistry of bacteria can be successfully regulated in order to achieve the desired flotation effect.