Optimization of copper extraction for bioleaching of complex Cu-polymetallic concentrate by moderate thermophiles

作     者：王玉光 苏丽君 曾伟民 邱冠周 万利利 陈新华 周洪波 Yu-guang WANG;Li-jun SU;Wei-min ZENG;Guan-zhou QIU;Li-li WAN;Xin-hua CHEN;Hong-bo ZHOU

作者机构：中南大学资源加工与生物工程学院长沙410083 长沙医学院医学检验系长沙410219 中南大学生物冶金教育部重点实验室长沙410083 国家海洋局海洋生物遗传资源重点实验室厦门361005 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2014年第24卷第4期

页      面：1161-1170页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 080601[工学-冶金物理化学] 

基　　金：Project (2012zzts026) supported by the Fundamental Research Funds for the Central Universities,China Project (201205020) supported by Scientific Research Program of Marine Public Welfare Industry of China Project (51074195) supported by the National Natural Science Foundation of China Project (CX2012B123) supported by Research Innovation for Graduate Student of Hunan Province,China Project (12C517) supported by Education Department of Hunan Province,China 

主　　题：moderate thermophiles bioleaching complex Cu-polymetallic concentrate copper extraction optimization 

摘      要：Effects of initial pH, temperature, liquid volume, rotation speed, galvanic interaction （pyrite ratio） and pulp density on bioleaching of complex Cu-polymetallic concentrate were investigated. The results indicated that the copper extraction at pH 1.5 was 1.5 and 1.4 times that at pH 1.0 and pH 2.0 respectively. The copper extraction obtained at 45 ℃ was 1236.8%higher than that at 50 ℃. With the increase of rotation speed or the decrease of liquid volume, copper extraction was improved obviously. Copper extraction was improved gradually with the increase of pyrite ratio. However, when the ratio was higher than 20.0%, no further increase in copper extraction was observed. And the statistically significant interactive effects on copper extraction were found between temperature and pH, and temperature and pyrite ratio.