嗜酸硫杆菌浸出胶磷矿的工艺研究  

Study on Bioleaching Technique of Collophanite by Thiobacillus Thiooxidans

作　　者：吴敏 李凌凌[2] 关海燕[2] 

机构地区：[1]西部矿业科技有限公司,青海西宁810001 [2]武汉科技大学化学工程与技术学院,湖北武汉430081

出　　处：《矿冶工程》2010年第2期51-54,共4页Mining and Metallurgical Engineering

基　　金：国家重点基础研究发展计划"973"基金项目(2008CB617611);湖北省科技厅基金项目2009CDA006

摘　　要：从湖北某酸性矿土中富集、分离和纯化获得了一株氧化硫硫杆菌(Thiobacillus thiooxidans,Tt),并对驯化4次的该菌浸出胶磷矿中磷的工艺条件进行了初步探索。结果显示,在接种量为30%,初始pH为2.0,磷矿浓度为10 g/L,颗粒度-0.074 mm粒级占68%,黄铁矿加入量为10 g/L,浸矿10 d后浸磷率可达到90.71%。A strain of bacterial was enriched, extracted and purified from an acid mine soil in Hubei province, which was identified as Thiobacillus thiooxidans. Some factors affecting its performance in bioleaching of collophanite were studied. The experiments show that, with an inoculation amount of 30%, initial pH value of 2. 0, collophanite concentration of 10 g/L, particle size fraction -0.074 mm of 68%, and pyrite dosage of 10 g/L, the leaching rate can amount to 90.71% after 10 days of leaching.

关 键 词：生物选矿 细菌浸出 氧化硫硫杆菌 胶磷矿 

分 类 号：TD925[矿业工程—选矿]