Acidithiobacillus ferrooxidans对黄铜矿和镍黄铁矿的浸出  

Effect of Acidithiobacillus ferrooxidans on Leaching out Chalcopyrite and Pentlandite

作　　者：佟琳琳[1] 杨洪英[1] 张耀[1] 张谷平[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2010年第11期1590-1593,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50874030);国家高技术研究发展计划项目(2009AA06Z104);国家科技"十一五"支撑计划项目(2008BAB34B01);中央高校基本科研业务费专项资金资助项目(N090302011)

摘　　要：以黄铜矿和镍黄铁矿为研究对象,初步探讨了Acidithiobacillus ferrooxidans对黄铜矿和镍黄铁矿的浸出.结果表明:有细菌参与下,黄铜矿的浸出率是无菌体系浸出率的2.41倍;镍黄铁矿的浸出率是无菌体系浸出率的1.91倍,细菌在矿物的浸出过程中起到了很好的促进作用.浸出过程中会有黄色的黄钾铁矾(K[Fe3(SO4)2(OH)6])沉淀产生,黄钾铁矾附着在矿体表面,产生"钝化现象",严重阻碍矿物的氧化.The effect of Acidithiobacillus ferrooxidans on leaching out chalcopyrite and pentlandite was studied and it was found that the leaching rates of chalcopyrite and pentlandite in such a case are 2.41 times and 1.91 times greater than the rates in aspect system,respectively. It meant that the bacteria plays an important stimulating role in the leaching out process of the two minerals,where the yellow jarosite （K[Fe3（SO4）2（OH）6]）precipitates and forms and is adsorbed onto the mineral surface,i.e.,a passivation. The oxidation of the minerals is thus hindered severely.

关 键 词：黄铜矿 镍黄铁矿 细菌浸出 黄钾铁矾 钝化 

分 类 号：TF18[冶金工程—冶金物理化学]