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| Cobalt enriched wlag from the low acidic leaching of spent li-ion batteries by sulfuting roasting and leaching |
| ZHOU Rong-chao, LU Jun-que, YE Min-jie, WANG Yu-bin, WANG Du |
| Hu’nan Brunp Recycling Technology Co. ,Ltd. , Changsha 412600, China) |
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Abstract Cobalt was recovered from the low acidic leaching residue of spent lion batteries by sulfating roasting-leaching process. X-ray diffraction shows that Co3O4 is the main phase of raw materials that is difficult to leach. The results show that nearly 99.86% of cobalt is leached out under optimal conditions, the roasting temperature is 350 ℃, H2SO4-to-raw material mass ratio is 0.8, and roasting time is 1 h.
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Received: 15 December 2018
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Corresponding Authors:
鲁俊雀（1985—），女，硕士，主要研究方向为废旧电池资源化利用。
E-mail: 1876840251@qq.com
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2020, Vol. 30 
