| 从废旧锂电池处理废渣中硫酸浸出锂的动力学研究 |
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| 引用本文： | 李强,陈若葵,谭群英,唐红辉,乔延超,陈欢. 从废旧锂电池处理废渣中硫酸浸出锂的动力学研究[J]. 矿冶工程, 2018, 38(5): 103-106. DOI: 10.3969/j.issn.0253-6099.2018.05.027 |
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| 作者姓名： | 李强 陈若葵 谭群英 唐红辉 乔延超 陈欢 |
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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： | 长沙市科技计划项目重大专项(kq1703039) |
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| 摘 要： | 采用硫酸浸出含锂废渣中的锂,考察了温度、液固比、硫酸浓度和搅拌速率对浸出过程的影响。结果表明,在液固比5∶1、硫酸浓度10%、搅拌速率400 r/min、反应温度70 ℃、反应120 min时,锂浸出率达到94.63%。通过正交实验和动力学推导,确认含锂废渣中硫酸浸出锂的动力学模型为收缩核模型,浸出表观活化能为10.39 kJ/mol,浸出过程中速度控制步骤是固膜扩散。
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| 关 键 词： | 废旧电池 硫酸浸出 锂 综合回收 含锂废渣 浸出动力学 收缩核模型 活化能 |
| 收稿时间： | 2018-04-20 |
Kinetics of Leaching Lithium from Waste Residue of Spent Lithium Battery by Sulfuric Acid |
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| LI Qiang,CHEN Ruo-kui,TAN Qun-ying,TANG Hong-hui,QIAO Yan-chao,CHEN Huan. Kinetics of Leaching Lithium from Waste Residue of Spent Lithium Battery by Sulfuric Acid[J]. Mining and Metallurgical Engineering, 2018, 38(5): 103-106. DOI: 10.3969/j.issn.0253-6099.2018.05.027 |
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| Authors: | LI Qiang CHEN Ruo-kui TAN Qun-ying TANG Hong-hui QIAO Yan-chao CHEN Huan |
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| Affiliation: | Hunan Brunp Recycling Technology Co Ltd, Changsha 410600, Hunan, China |
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| Abstract: | Lithium was leached from lithium containing waste residue with sulfuric acid to investigate effects of temperature, liquid-solid ratio, sulfuric acid concentration and stirring rate on the leaching process. Results showed that the leaching rate of lithium reached 94.63% after the reaction at 70 ℃ for 120 min, with liquid-solid ratio at 5∶1 and sulfuric acid concentration of 10%. Based on orthogonal experiment and dynamic deduction, it is found that the kinetic model of lithium leaching from waste residue was a shrinking core model. The apparent activation energy of leaching was 10.39 kJ/mol and the rate controlling step was solid-film diffusion. |
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| Keywords: | spent battery sulfuric acid leaching lithium comprehensive recovery lithium-containing waste residue leaching kinetics shrinking core model activation energy |
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