| 低酸富钴渣中钴的浸出 |
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| 引用本文： | 鲁俊雀,王杜,叶民杰,何然,王榆彬.低酸富钴渣中钴的浸出[J].矿冶工程,2019,39(6):85-87. |
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| 作者姓名： | 鲁俊雀 王杜 叶民杰 何然 王榆彬 |
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| 作者单位： | 湖南邦普循环科技有限公司,湖南 长沙 410600 |
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| 基金项目： | 国家重点研发计划(2018YFC1901803);
长沙市科技计划项目经费资助(kq1804047) |
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| 摘 要： | 采用H2SO4-Na2S2O3·5H2O体系酸性浸出低酸富钴渣中的钴, 研究了制浆顺序、酸料比、还原剂浓度、反应温度、反应时间及液固比对钴浸出率的影响。最佳浸出工艺条件为: 向渣中直接加硫酸再补水制浆, 酸料比0.8, Na2S2O3·5H2O浓度0.12 mol/L, 反应温度85 ℃, 反应时间1.5 h, 液固比5∶1, 此时钴浸出率可达99.75%。
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| 关 键 词： | 废旧锂离子电池 钴 富钴渣 浸出 正极材料 回收 |
| 收稿时间： | 2019-06-01 |
Leaching of Cobalt from Low-Acid Cobalt-Rich Residue |
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| LU Jun-que,WANG Du,YE Min-jie,HE Ran,WANG Yu-bin.Leaching of Cobalt from Low-Acid Cobalt-Rich Residue[J].Mining and Metallurgical Engineering,2019,39(6):85-87. |
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| Authors: | LU Jun-que WANG Du YE Min-jie HE Ran WANG Yu-bin |
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| Affiliation: | Hunan Bangpu Recycling Technology Co Ltd, Changsha 410600, Hunan, China |
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| Abstract: | A H2SO4-Na2S2O3·5H2O system was used in the acid leaching of cobalt from low-acid cobalt-rich residue of spent Li-ion batteries. The effects of pulping sequence, the ratio of sulfuric acid to raw materials, the concentration of reducing agent, reaction temperature, reaction time and liquid-solid ratio on the cobalt leaching rate were all studied. It is found that the cobalt leaching rate can reach 99.75% by directly adding sulfuric acid and then replenishing water in he pulping process, with sulfuric acid and raw material at a ratio of 0.8, the concentration of Na2S2O3·5H2O at 0.12 mol/L, the reaction temperature at 85 ℃, the reaction time of 1.5 h and the liquid-solid ratio at 5∶1. |
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| Keywords: | spent Li-ion batteries cobalt cobalt-rich residue leaching cathode materials recycling |
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