氧化亚铁硫杆菌浸出镍黄铁矿机理的初步分析  

Preliminary Analysis on the Mechanism of Bioleaching of Nicopyrite by Thiobacillus Ferrooxidans

作　　者：张广积[1] 方兆珩[1] 

机构地区：[1]中国科学院化工冶金研究所,北京100080

出　　处：《过程工程学报》2001年第4期374-377,共4页The Chinese Journal of Process Engineering

基　　金：国家重点自然科学基金资助项目(编号:59834150)

摘　　要：对生物浸出镍黄铁矿的过程进行了研究,得到以下一些结论:(1) 吸附在矿物表面的细菌对矿物的溶解起着最重要的作用,溶液中游离菌的作用较小,而Fe3+对镍黄铁矿的化学溶解作用较弱;(2) Fe2+主要是被溶液中的游离菌氧化的;(3) 硫的不完全氧化将导致溶液pH的升高.Bioleaching of Nicopyrite was studied and the following conclusions were drawn from the experiments: (1) The bacteria attached on the surface of the minerals had the most important contribution to the dissolution of Nicopyrite, the free bacteria in the solution had minor contribution; (2) Fe2+ was mainly oxidized by free bacteria in the solution; (3) The incomplete oxidation of S can lead to rising of pH value in solution.

关 键 词：镍黄铁矿 生物浸出 氧化亚铁硫杆菌 吸附菌 

分 类 号：TF815[冶金工程—有色金属冶金] TF18