含砷低品位硫化铜矿生物柱浸实验  

Column bioleaching of arsenic-bearing low-grade sulfide copper ore

作　　者：温建康[1] 阮仁满[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：《北京科技大学学报》2008年第2期120-125,共6页Journal of University of Science and Technology Beijing

基　　金：国家"十五"科技攻关计划项目(No2001BA609A-17);国家科技部院所技术开发专项(NoNCSTE-2000-JKZX-048)

摘　　要：介绍了含砷低品位硫化铜矿柱浸实验研究方法、装置和结果.实验在八根有机玻璃柱浸系统中进行,考察了细菌种类、矿石粒度、供氧条件及浸出周期等参数对浸出率的影响.结果表明,在-12mm粒度下,采用Z08090-O菌株浸出,浸出167d,铜浸出率为80.75%.对含大量黄铁矿且耗酸脉石少的矿石,酸的累积降低了采用普通驯化浸矿菌的铜浸出率,但采用激光诱变获得的耐低pH值浸矿菌,能够保持高效的铜浸出率.The method, experimental equipment and results of column leaching were presented for low-grade copper sulfide ore. The experiment was carried out in 8 organic glass columns. The effect of process parameters, such as bacteria variety, ore particle size, aerating and leaching period on the bioleaching rate was investigated. During the period of 167 d, the copper leaching rate was 80.75 % by Z08090-O strain with - 12 mm ore size. Using common domesticated species Acidithiobacillus ferrooxidans, the copper leaching rate decreased because of acid accumulation in the ore containing large quantities of pyrite but little acid-consuming gangue. However, by Z08090-O strain, the copper leaching rate was higher.

关 键 词：硫砷铜矿 生物冶金 诱变菌 柱浸 萃取电积 

分 类 号：TF804.2[冶金工程—有色金属冶金]