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Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity - Study on leaching kinetics of copper sulfides and its implications
Ruan, Renman1,2; Zou, Gang1; Zhong, Shuiping1; Wu, Zengling1; Chan, Brenda1; Wang, Dianzuo3
2013-07-01
Source PublicationMINERALS ENGINEERING
Volume48Issue:0Pages:36-43
AbstractZijinshan commercial bioheapleaching-SX-EW plant has been in operation since December 2005. 13.9 million tonnes of low grade copper sulfide ore (Cu 0.38%) has been leached efficiently with an annual recovery of 80% in this distinct leaching system with high iron concentration, high temperature, high acidity and low microbial activity. This paper is to study the key factors which influence the heap operation in Zijinshan. Dissolution kinetics of diginite and covellite was carried out in acid ferric sulfate solution under controlled redox potential. Moreover, column bioleaching tests were conducted in the laboratory with raffinate from the plant. Both results showed that the main factors accelerating dissolution rate of Cu1.8S/CuS were mainly temperature and ferric concentration, while redox potential only had a slight positive effect. The present work provides an insight into mineral kinetics to understand this unique bioheapleaching operation and gives further information for optimization of the existing practices. (c) 2013 Elsevier Ltd. All rights reserved.
KeywordDissolution Kinetics Digenite And Covellite Column Tests Bioheapleaching
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordTHIOBACILLUS-FERROOXIDANS ; FERRIC SULPHATE ; LOW PH ; COVELLITE ; DISSOLUTION ; IRON
WOS Research AreaEngineering ; Mineralogy ; Mining & Mineral Processing
WOS SubjectEngineering, Chemical ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000321167400007
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13640
Collection研究所(批量导入)
Affiliation1.Zijin Min Grp Co Ltd, State Key Lab Gold Extract, Shanghang 364200, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
3.Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Peoples R China
Recommended Citation
GB/T 7714
Ruan, Renman,Zou, Gang,Zhong, Shuiping,et al. Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity - Study on leaching kinetics of copper sulfides and its implications[J]. MINERALS ENGINEERING,2013,48(0):36-43.
APA Ruan, Renman,Zou, Gang,Zhong, Shuiping,Wu, Zengling,Chan, Brenda,&Wang, Dianzuo.(2013).Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity - Study on leaching kinetics of copper sulfides and its implications.MINERALS ENGINEERING,48(0),36-43.
MLA Ruan, Renman,et al."Why Zijinshan copper bioheapleaching plant works efficiently at low microbial activity - Study on leaching kinetics of copper sulfides and its implications".MINERALS ENGINEERING 48.0(2013):36-43.
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