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| Study on Recovering Valuable Metals from Spent Lithium-ion Batteries |
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Received:November 27, 2018
Revised:November 29, 2018
Accepted:December 03, 2018
Published Online:February 15, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.03.016 |
| KeyWord:lithium ion battery; leaching; recovery; lithium carbonate |
| Author | Institution |
| sunmingcang |
中南大学 化学化工学院 |
| Ye Hua |
中南大学 化学化工学院 |
| Chen Wujie |
中南大学 化学化工学院 |
| Li Haoyu |
中南大学 化学化工学院 |
| Xiao Jun |
中南大学 化学化工学院 |
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| Abstract: |
| Applying spent lithium nickel cobalt manganese oxide battery as raw material, valuable metals in waste lithium ion battery were effectively recovered through separation of active material, leaching, and stepwise chemical precipitation. Leaching experiments were conducted applying H2SO4 as leaching agent and (NH4)2SO3 as reductant. Leaching efficiency of Co, Ni, Mn and Li is 97.61%, 98.40%, 97.91% and 98.43% respectively under the optimum leaching conditions including H2SO4 concentration of 1.0 mol/L, (NH4)2SO3 concentration of 0.34 mol/L, ratio of solid to liquid of 25 g/L, reaction temperature of 60 ℃ and reaction time of 40 min. Ni, Co and Mn in leachate are recovered by coprecipitation. Li+ in mother liquor is recovered by adding saturated Na2CO3. |
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