银离子在细菌浸出黄铜矿中的催化行为研究  

The Study of Catalyzing Behavior of Silver Ions in Bacterial Leaching of Chalcopyrite

作　　者：王康林[1] 韩效钊[1] 汪模辉[2] 王百年[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009 [2]成都理工大学,四川成都610059

出　　处：《矿冶工程》2003年第5期60-62,共3页Mining and Metallurgical Engineering

基　　金：国土资源部九五重点学科生长点基金项目外国专家局国际合作项目 (993451 6)

摘　　要：对银离子催化细菌浸出黄铜矿进行了研究。在银离子存在下 ,矿粒越细 ,浸出率就越高 ;浸出溶液pH值在 1.5～ 2时浸出率较高 ;银离子浓度在 10mg/L时浸出效果最好。在实验范围内 ,不论银离子初始值大小如何 ,银离子在加入浸出体系后主要是以硫化银形式存在 ,以离子形式存在于溶液中只占很小一部分。An investigation is made of the catalyzing behavior of silver ions in bacterial leaching of chalcopyrite. In the presence of Ag ions, the finer the size of chalcopyrite particles is,the higher the leaching rate is. At a leaching liquor pH of 1.5～2.0, the bioleaching results are better, and at Ag ion concentration of 10 mg/L, the leaching rate is the highest. In the range of experiment, Ag ions, which have been added to the leaching system, occur mostly as silver sulfide and a few as Ag ion, regardless of the initial concentration of Ag ions.

关 键 词：生物选矿 细菌浸出 黄铜矿 银离子 催化 氧化亚铁硫杆菌 

分 类 号：TF811[冶金工程—有色金属冶金] TF18