BIOOXIDATION OF TWO ARSENICAL REFRACTORY GOLD CONCENTRATES AND GOLD CYANIDATION  

作　　者：Zhang, Yongzhu Lu, Yiyuan Zhang, Chuanfu Zhao, Tiancong(Deptartment.of Nonferrous Metallurgy,Central South University of Technology, 410083 Changsha)Qiu , Rongqing(Microbilolgy Institute, Academia Sinica,Beijing 100080) 

出　　处：《中国有色金属学会会刊：英文版》1994年第3期41-45,共5页Transactions of Nonferrous Metals Society of China

摘　　要：ＢＩＯＯＸＩＤＡＴＩＯＮＯＦＴＷＯＡＲＳＥＮＩＣＡＬＲＥＦＲＡＣＴＯＲＹＧＯＬＤＣＯＮＣＥＮＴＲＡＴＥＳＡＮＤＧＯＬＤＣＹＡＮＩＤＡＴＩＯＮＺｈａｎｇ，Ｙｏｎｇｚｈｕ；Ｌｕ，Ｙｉｙｕａｎ；Ｚｈａｎｇ，Ｃｈｕａｎｆｕ；Ｚｈａｏ，Ｔｉａｎｃｏｎｇ（Ｄｅｐ...The influence of pulp density , ferric ion concentration and particle size on the tank bioleach-ing of two kinds of refractory gold concentrates are discussed. Tbe chemistry and mechanism ofbioleaching process are also presented. The relationship between oxidation of sulfides, liberationof enclosed gold and gold cyanidation are discussed. The consumption of NaCN could be reducedby alkaline pretreatment of bioleached residues prior to cyanidation.

关 键 词：GOLD bacterial leaching REFRACTORY GOLD ORES 

分 类 号：TF831[冶金工程—有色金属冶金]