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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 3    June 2009

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Study of spent battery material leaching process
LI Jin-hui(李金辉)1, 2, LI Xin-hai(李新海)1, ZHANG Yun-he(张云河)1, HU Qi-yang(胡启阳)1,
WANG Zhi-xing(王志兴)1, ZHOU You-yuan(周友元)

1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;
2. School of Materials and Chemical Engineering, Jiangxi University of Science and Technology,
Ganzhou 341000, China

Abstract:The recovery of Ni, Co and Mn from spent battery material is very important to environment protection, utilization of resources and cost reduction of the material. The dissolution rates of Ni, Co and Mn with hydrochloric acid as leachant are all over 95% under the optimal conditions of initial hydrochloric acid of 6 mol/L, particle size of 120 μm for the exhausted scraps, molar ratio of H2O2 to MeS of 2, leaching temperature about 60 ℃, ratio of liquid to solid of 8, and leaching time of 2 h. The NixCoyMnz precursor for cathode material prepared from the purified leaching solution, can meet the demand of precursor by pure chemicals. The process is economic and feasible for base metals from spent battery material.

 

Key words: spent battery materials; nickel; cobalt; manganese; recovery; leaching

ISSN 1672-7029
CN 43-1423/U

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