Bacterial leaching of discarded copper ores from Yongping, China

Muqing Qiu, Genxuan Wang, Zhuxia Shen

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    Muqing Qiu, Genxuan Wang, and Zhuxia Shen, Bacterial leaching of discarded copper ores from Yongping, China, J. Univ. Sci. Technol. Beijing , 12(2005), No. 4, pp.294-297.
    Muqing Qiu, Genxuan Wang, and Zhuxia Shen, Bacterial leaching of discarded copper ores from Yongping, China, J. Univ. Sci. Technol. Beijing , 12(2005), No. 4, pp.294-297.
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    Mineral

    Bacterial leaching of discarded copper ores from Yongping, China

    • College of Life Sciences, Zhejiang University, Hangzhou 310029, China

      通信作者:

      Genxuan Wang E-mail: wanggx@zju.edu.cn

    中文摘要

    The elementary and phase analysis of discarded copper ores from Yongping of China has been performed. The experiments of extracting copper from the discarded copper ores were done with the mixed bacteria obtained through a series of enrichment,separation, domestication and combination tests. The results show that in the process of bioleaching, the pH value rises at first and drops gradually. The Eh value keeps rising along with the time and the appropriate Eh value varying between 750 and 800 mV will benefit the bioleaching copper. The high concentration of ferric ions is detrimental to the bioleaching copper. The results of bioleaching copper are good. That is, the copper recovery is 31.8% after 27 days.

     

    Mineral

    Bacterial leaching of discarded copper ores from Yongping, China

    Author Affilications

      • College of Life Sciences, Zhejiang University, Hangzhou 310029, China

    • Received: 26 September 2004;
    The elementary and phase analysis of discarded copper ores from Yongping of China has been performed. The experiments of extracting copper from the discarded copper ores were done with the mixed bacteria obtained through a series of enrichment,separation, domestication and combination tests. The results show that in the process of bioleaching, the pH value rises at first and drops gradually. The Eh value keeps rising along with the time and the appropriate Eh value varying between 750 and 800 mV will benefit the bioleaching copper. The high concentration of ferric ions is detrimental to the bioleaching copper. The results of bioleaching copper are good. That is, the copper recovery is 31.8% after 27 days.

     

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