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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 18    No. 5    October 2008

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Optimization of separation processing of copper and iron of dump bioleaching solution by Lix 984N in Dexing Copper Mine
LIU Qing-ming(刘清明)1, 2, YU Run-lan(余润兰)1, 3, QIU Guan-zhou(邱冠周)1, 3,
FANG Zheng(方 正)1, 2, CHEN Ai-liang(陈爱良)4, ZHAO Zhong-wei(赵中伟)4

1. Key Laboratory of Biometallurgy, Ministry of Education, Central South University, Changsha 410083, China;
2. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
3. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;
4. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China

Abstract: The effects of the concentration of Lix 984N, phase ratio, initial pH value of aqueous phase and extraction time on the extraction of copper and iron under the condition of low Cu2+ /Fe3+ ratio in dump bioleaching solution of Dexing Copper Mine were explored. The optimal conditions of extraction are as follows: the concentration of Lix 984N 10%; the phase ratio (O/A) 1׃1; the initial pH value of aqueous phase 1.5 and the mixing time 2 min. The stripping experiments show that H2SO4 solution could efficiently recover copper from the organic phase under the optimal conditions.

 

Key words: copper solvent extraction; processing optimization; Lix 984N; bioleaching solution

ISSN 1672-7029
CN 43-1423/U

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