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| Study on the Leaching LiCoO[sub_s]2[sub_e] in HCl Concentration |
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Received:January 16, 2014
Revised:January 16, 2014
Accepted:January 16, 2014
Published Online:March 24, 2014
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| DOI： |
| KeyWord:spent lithium-ion battery; hydrazine hydrate; lithium cobalt oxide; leaching. |
| Author | Institution |
| YANG Yong-qiang |
Beijing General Research Institute of Mining Metallurgy |
| WANG Cheng-yan |
Beijing General Research Institute of Mining Metallurgy |
| ZHANG Yong-lu |
Beijing General Research Institute of Mining Metallurgy |
| JIE Xiao-wu |
Beijing General Research Institute of Mining Metallurgy |
| XING Peng |
Beijing General Research Institute of Mining Metallurgy |
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| Abstract: |
| The leaching behavior of battery grade lithium cobalt oxide (LiCoO2) was studied in HCl-N2H2.H2O aqueous solutions. The experimental results show that the optimal leaching technique is determined as follows: the HCl concentration of 0.9 mol/L, the N2H2.H2O to LiCoO2 ratio (g/g)of 6.25:10, the leaching temperature of 70℃ and the leaching time of 30min. Based on the leaching of pure LiCoO2, the HCl-N2H2.H2O leaching system is further applied in the treatment of spent Li-ion battery and the leaching rate of cobalt and lithium can be achieved at 95% and 99%,respectively. The leaching technique of spent Li-ion battery is further proved to be effective and stable. |
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