Recovery of LiNi0.6Mn0.2Co0.2O_2 from Spent Lithium Ion Batteries by Leaching with H_2SO_4 and Reductants AITranslate
Abstract AITranslate
The cathode materials（LiNi0.6Mn0.2Co0.2O2）in spent lithium ion batteries were processed by leaching with H2SO4 and reductants.The effects of H2SO4 concentration and leaching temperature on the leaching of valuable metals were studied.Optimal H2SO4 concentration and leaching temperature are determined of 2 mol/L and 40℃,respectively during leaching.Under the optimized conditions of H2SO4 concentration of 2 mol/L,the ratio of raw material to leaching agent of 100 g/L,leaching time of 2 h,leaching temperature of 40 ℃ and stirring speed of 500 r/min,the effects of such reductants as H2O2,C6H12O6 and Na2SO3 on the leaching of valuable metals were investigated by single factor experiments.The results show that the optimum addition of H2O2,C6H12O6 and Na2SO3 are 4.5%,80 g/L and 60 g/L,respectively.The effects of mixed reductants were also investigated by orthogonal experiments.When the composition of reductants is 120 g/L C6H12O6 and 100 g/L Na2SO3,the leaching rates of Co,Li,Mn and Ni are 93.51%,92.68%,95.61% and 92.93%,respectively,but the leaching rate of Al is only 18.57%.Compared with single reductant,mixed reductants with suitable composition can control the leaching of the impurity metal of Al under the condition that the leaching rate of valuable metals（Li、Ni、Mn、Co）is not obviously reduced.In addition,the factors affecting Al and Li leaching have the following primary and secondary orders：Na2SO3〉C6H12O6〉H2O2 and H2O2〉Na2SO3〉C6H12O6,respectively.And the factors affecting Co,Mn and Ni leaching have the following primary and secondary order：C6H12O6〉H2O2〉Na2SO3.
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Basic Information:
DOI：
Chinese Library Classification Number:TF803.21[冶金工程—有色金属冶金]
Citation Information:
The cathode materials（LiNi0.6Mn0.2Co0.2O2）in spent lithium ion batteries were processed by leaching with H2SO4 and reductants.The effects of H2SO4 concentration and leaching temperature on the leaching of valuable metals were studied.Optimal H2SO4 concentration and leaching temperature are determined of 2 mol/L and 40℃,respectively during leaching.Under the optimized conditions of H2SO4 concentration of 2 mol/L,the ratio of raw material to leaching agent of 100 g/L,leaching time of 2 h,leaching temperature of 40 ℃ and stirring speed of 500 r/min,the effects of such reductants as H2O2,C6H12O6 and Na2SO3 on the leaching of valuable metals were investigated by single factor experiments.The results show that the optimum addition of H2O2,C6H12O6 and Na2SO3 are 4.5%,80 g/L and 60 g/L,respectively.The effects of mixed reductants were also investigated by orthogonal experiments.When the composition of reductants is 120 g/L C6H12O6 and 100 g/L Na2SO3,the leaching rates of Co,Li,Mn and Ni are 93.51%,92.68%,95.61% and 92.93%,respectively,but the leaching rate of Al is only 18.57%.Compared with single reductant,mixed reductants with suitable composition can control the leaching of the impurity metal of Al under the condition that the leaching rate of valuable metals（Li、Ni、Mn、Co）is not obviously reduced.In addition,the factors affecting Al and Li leaching have the following primary and secondary orders：Na2SO3〉C6H12O6〉H2O2 and H2O2〉Na2SO3〉C6H12O6,respectively.And the factors affecting Co,Mn and Ni leaching have the following primary and secondary order：C6H12O6〉H2O2〉Na2SO3.
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| GB/T 7714-2015 | [1] LU Xiu-yuan, ZHANG Gui-qing, CAO Zuo-ying, et al. Recovery of LiNi0.6Mn0.2Co0.2O_2 from Spent Lithium Ion Batteries by Leaching with H_2SO_4 and Reductants[J]. Rare Metals and Cemented Carbides, 2017(6): 14-23. |
| MLA | [1] LU Xiu-yuan, et al., "Recovery of LiNi0.6Mn0.2Co0.2O_2 from Spent Lithium Ion Batteries by Leaching with H_2SO_4 and Reductants." Rare Metals and Cemented Carbides, no. 6, 2017, pp. 14-23. |
| APA | [1] LU Xiu-yuan, ZHANG Gui-qing, CAO Zuo-ying, LI Qing-gang, CENG Li, GUAN Wen-juan, & JIN Ke-da. (2017). Recovery of LiNi0.6Mn0.2Co0.2O_2 from Spent Lithium Ion Batteries by Leaching with H_2SO_4 and Reductants. Rare Metals and Cemented Carbides(6), 14-23. |
| IEEE | [1] LU Xiu-yuan, ZHANG Gui-qing, CAO Zuo-ying, LI Qing-gang, CENG Li, GUAN Wen-juan, and JIN Ke-da, "Recovery of LiNi0.6Mn0.2Co0.2O_2 from Spent Lithium Ion Batteries by Leaching with H_2SO_4 and Reductants," Rare Metals and Cemented Carbides, no. 6, pp. 14-23, 2017. keywords: {spent lithium-ion battery;LiNi0.6Mn0.2Co0.2O2;valuable metal recovery;leaching with sulfuric acid and reductant;mixed reductant} |