细菌浸矿作用分析  

Description of Microbe Effects on Sulfide Mineral Bio-leaching

作　　者：李宏煦[1] 王淀佐[1] 陈景河 阮仁满[1] 

机构地区：[1]北京有色金属研究总院,北京100088 [2]福建紫金矿业股份有限公司,福建上杭364200

出　　处：《有色金属》2003年第3期68-71,79,共5页Nonferrous Metals

基　　金：国家自然科学基金资助项目 ( 5 0 2 0 40 0 1) ;国家"十五"科技攻关项目

摘　　要：归纳总结硫化矿细菌浸出过程的各类作用过程 ,综述相关研究结果。细菌的存在使矿物表面的H+ 浓度增加 ,同时也使体系混合电位上升。直接作用和间接作用的区别在于硫化矿的氧化分解是否通过Fe3+ 的氧化作用 ,即不管细菌粘附矿物与否 ,间接作用为Fe3+ 浸出矿物 ,而直接作用则指细菌的直接氧化分解作用。细菌浸矿过程是包括化学、电化学、动力学现象的复杂过程 ,各种作用不是孤立的 ,是互相联系 。The various effects of microbe on sulfide minerals leaching process is summarized, and the relative investigations are reviewed. The pH at the mineral surface and mixed electro potential in leaching system are decreased and increased respectively by the exist of the bacteria. The difference between the direct and indirect mechanisms is whether sulfide is oxidized by Fe 3+ in despite of bacteria adhering on mineral surface or not. The direct effect refers to the sulfide oxidized directly by bacteria without electron transmission by Fe 3+ /Fe 2+ couple, otherwise is indirect effect. The process of sulfide bioleaching is complicated process involving chemical, electrochemical and kinetic effect, and the various effects are not isolated, but related and alternated each other.

关 键 词：冶金技术 细菌浸出 综述 微生物 硫化矿 细菌浸矿 

分 类 号：TF18[冶金工程—冶金物理化学]