中等嗜热菌浸出黄铜矿的氧传质系数研究  

Coefficient of Oxygen Transfer in Bioleaching of Chalcopyrite by Moderate Thermophile

作　　者：徐金光[1] 温建康[1] 武彪[1] 

机构地区：[1]北京有色金属研究总院生物冶金国家工程实验室,北京100088

出　　处：《稀有金属》2009年第4期577-581,共5页Chinese Journal of Rare Metals

基　　金："973"国家重点基础研究发展计划课题(2004CB619205);"863"原生硫化铜矿表外矿生物堆浸工程技术项目(2007AA060902)资助

摘　　要：针对中等嗜热菌对黄铜矿精矿(75.5%,CuFeS2)搅拌浸出中利用动态法测定氧传质系数kLα值进行了相关研究。结果表明,利用动态法可以有效测定搅拌浸出体系中的氧传质系数kLα值,同时可以得到体系中的细菌耗氧速率和饱和溶氧浓度值。研究还发现随着浸出时间的延长,分批搅拌浸出中的氧传递效率呈波动性变化,细菌耗氧速率呈下降趋势,而体系中的饱和溶氧浓度基本保持不变。The measurement of the coefficient of oxy- gen transfer the stirred bioleaching of chalcopyrite （ Cu 75.5% ） by moderate thermophile was investigated with dynamic method. The results showed that the mensuration of kLα with dynamic method was conven- ient and exact comparatively, and the rate of oxygen consumption and the saturated content of soluble oxy- gen in bioleaching were measured. In addition, the coefficient of oxygen transfer kLα was fluctuant with time going, and the rate of oxygen consumption de- creased, and the saturated content of soluble oxygen hold the line basically.

关 键 词：细菌浸出 黄铜矿 中等嗜热菌 氧传质系数 

分 类 号：TD862.1[矿业工程—金属矿开采]