| Bioleaching of low-grade copper sulfide ores by Acidithiobacillus ferrooxidans and AcidithiobacillusThiooxidans简 |
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| 引用本文： | WANG Jun,ZHU Shan,ZHANG Yan-sheng,ZHAO Hong-bo,HU Ming-hao,YANG Cong-ren,QIN Wen-qing,QIU Guan-zhou. Bioleaching of low-grade copper sulfide ores by Acidithiobacillus ferrooxidans and AcidithiobacillusThiooxidans简[J]. 中南工业大学学报(英文版), 2014, 0(2): 728-734 |
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| 作者姓名： | WANG Jun ZHU Shan ZHANG Yan-sheng ZHAO Hong-bo HU Ming-hao YANG Cong-ren QIN Wen-qing QIU Guan-zhou |
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| 基金项目： | Project（2012AA061501）supported by the National High-tech Research and Development Program of China;Project（20120162120010）supported by the Research Fund for the Doctoral Program of Higher Education of China;Project（NCET-13-0595）supported by the program for New Century Excellent Talents in University of China;Project（51374248）supported by the National Natural Science Foundation of China;Project（2010CB630905）supported by the National Key Basic Research Program of China |
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| 摘 要： | The grown conditions of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were investigated,and then experiments were conducted to research the bioleaching behaviors of crude ore of copper sulfide and hand-picked concentrates of chalcopyrite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans.The experimental results show that the bacteria grow best when the temperature is（30±1） °C and the pH value is 2.0.The bacteria concentration is 2.24×107 mL-1 in this condition.It is found that the copper extraction yield is affected by the inoculum size and the pulp density and the extraction yield increases as the inoculum size grows.The bioleaching rates reach their highest point in sulfide copper and chalcopyrite with a pulp density of 5% and 10%,respectively.Column flotation experiments of low-grade copper sulfide ores show that the bioleaching recovery reaches nearly 45% after 75 days.
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| 关 键 词： | 氧化亚铁硫杆菌 氧化硫硫杆菌 硫化铜矿 生物浸出 低品位 细菌生长 柱实验 生长条件 |
Bioleaching of low-grade copper sulfide ores by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans |
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| Affiliation: | [1]Key Laboratory of Biohydrometallurgy of Ministry of Education (Central South University), Changsha 410083, China; [2]School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China |
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| Abstract: | biohydrometallurgy chalcopyrite Acidithiobacillus ferrooxidans Acidithiobacillus thiooxidans copper sulfide ore |
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| Keywords: | biohydrometallurgy chalcopyrite Acidithiobacillus ferrooxidans Acidithiobacillus thiooxidans copper sulfide ore |
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