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| Selective Recovery of Value Metals from Spent Lithium Batteries by Ammonia Leaching Process |
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Received:January 15, 2024
Revised:January 23, 2024
Accepted:January 25, 2024
Published Online:May 01, 2024
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| DOI：doi：10.3969/j.issn.1007-7545.2024.06.003 |
| KeyWord:spent ternary lithium batteries; ammonia leaching; valuable metal; recycle; Li; Ni; Co |
| Author | Institution |
| YAO Shunyu |
武汉理工大学 资源与环境工程学院; |
| DING Wei |
武汉理工大学 资源与环境工程学院; |
| KE Changjun |
武汉理工大学 资源与环境工程学院; 钒资源高效利用湖北省协同创新中心 |
| ZHONG Yuexian |
武汉理工大学 资源与环境工程学院; 钒资源高效利用湖北省协同创新中心 |
| BAO Shenxu |
武汉理工大学 资源与环境工程学院; |
| HOU Xiaochuan |
浙江新时代中能循环科技有限公司 |
| XU Kaihua |
格林美股份有限公司 |
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| Abstract: |
| The selective leaching process of lithium, nickel, and cobalt from spent ternary lithium batteries by ammonium bicarbonate-reductant system was studied. The effects of leaching temperature, concentration of ammonium bicarbonate, type and concentration of reductant, solid-to-liquid ratio, and leaching time on leaching rate of valuable metals were investigated. The selective leaching mechanism was investigated by XRD, SEM-EDS and FT-IR characterization methods. The results show that the leaching rate of Li, Ni, and Co is 96.86%, 96.36% and 93.43%, respectively, while manganese is almost never leached under the conditions including leaching temperature of 80 ℃, leaching time of 2.5 h, ammonium bicarbonate concentration of 2.5 mol/L, solid-liquid ratio of 50 g/L, and reductant sodium sulfite concentration of 0.6 mol/L. The ammonium bicarbonate-ammonium sulfite reduction system can achieve efficient and selective recovery of lithium, nickel and cobalt from waste ternary lithium battery materials. |
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