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《Mining and Metallurgical Engineering》 2003-05
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The Study of Catalyzing Behavior of Silver Ions in Bacterial Leaching of Chalcopyrite

WANG Kang-Lin1, HAN Xiao-Zhao1, WANG Mo-Hui2, WANG Bai-Nian1 (1. Hefei University of Technology, Hefei 230009, Anhui,China; 2. Chengdu University of science and Technology, Chengdu 610059, Sichuan, China)  
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.
【Fund】: 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)
【CateGory Index】: TF811
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