白银含铜废石常温生物可浸性试验  

Bioleaching of Baiyin Waste rocks Containing Copper with Mesophilic Bacteria

作　　者：舒荣波[1,2] 陶秀祥[2] 程蓉[1] 刘厚明[1] 

机构地区：[1]中国地质科学院矿产综合利用研究所、中国地质调查局金属矿产资源综合利用技术研究中心,四川成都610041 [2]中国矿业大学,江苏徐州221004

出　　处：《矿产综合利用》2014年第6期58-61,共4页Multipurpose Utilization of Mineral Resources

基　　金：国土资源部公益性行业科研项目(201111030)

摘　　要：从白银铜矿矿坑水中筛选分离的BY 1#细菌对黄铁矿有较好的氧化效果,也具有较好的抗剪切性和金属离子抗性。生物浸出综合试验表明该细菌在对黄铜矿的生物氧化溶解过程中,矿物表面可能存在某种钝化膜层,导致铜浸出率偏低,延长浸出时间所获得的效果也较差。在接种浓度10%、矿浆浓度5%、矿样粒度D70=400、摇床转速175rpm的试验条件下,浸出60d可获得的铁浸出率为57.24%,铜浸出率为42.16%。A bacterium BY 1 # which was separated from acid mine drainage of Baiyin copper mine could be applica- ble to the oxidative bioleaching of pyrite. The bacteria have good shear resistance and metal resistance. The results showed that the problem of passivation would occur in bioleaching process with the bacteria. The phenomenon could lead to low copper extraction even for extending leaching time. The iron extraction was 57. 24% and copper extrac- tion was 42. 16% after 60 days of bioleaching at 10% inoculum size,5 % pulp density, particle size of 400 mesh and 175 revolutions per minutes （rpm） in an orbital shaker.

关 键 词：黄铁矿 黄铜矿 含铜废石 生物浸出 

分 类 号：TD989[矿业工程—选矿]