Technology of Calcium and Magnesium Removal during Preparation of Battery Grade Lithium Carbonate by Hydrogenation Decomposition AITranslate
Abstract AITranslate
The industrial grade lithium carbonate was transformed into battery grade lithium carbonate by hydrogenation decomposition.The main method of Ca and Mg impurity removal is the combination of pretreatment before hydrogenation and treatment of hydrogenation decomposition.The results show that adding the complexing agent nitrilotriacetic acid with 6 times the total content of cationic impurities during the pretreatment before hydrogenation can effectively remove Ca and Mg from industrial lithium carbonate at 25℃,and the removal rate is 65%.Adding EDTA with 6 times the total content of cationic impurities to the hydrogenated slurry during hydrogenation decomposition,the impurity removal efficiency is over 98%.After the two-stage reactions of pretreatment before hydrogenation and treatment of hydrogen decomposition,Ca and Mg impurities can be reduced below the industry standard of battery grade lithium carbonate,and the Ca and Mg contents in the obtained lithium carbonate product are 0.000 5%and 0.001 4%,respectively.
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Basic Information:
DOI：
Chinese Library Classification Number:TF803.25[冶金工程—有色金属冶金]
Citation Information:
The industrial grade lithium carbonate was transformed into battery grade lithium carbonate by hydrogenation decomposition.The main method of Ca and Mg impurity removal is the combination of pretreatment before hydrogenation and treatment of hydrogenation decomposition.The results show that adding the complexing agent nitrilotriacetic acid with 6 times the total content of cationic impurities during the pretreatment before hydrogenation can effectively remove Ca and Mg from industrial lithium carbonate at 25℃,and the removal rate is 65%.Adding EDTA with 6 times the total content of cationic impurities to the hydrogenated slurry during hydrogenation decomposition,the impurity removal efficiency is over 98%.After the two-stage reactions of pretreatment before hydrogenation and treatment of hydrogen decomposition,Ca and Mg impurities can be reduced below the industry standard of battery grade lithium carbonate,and the Ca and Mg contents in the obtained lithium carbonate product are 0.000 5%and 0.001 4%,respectively.
quote
| GB/T 7714-2015 | [1] LI Peng-wu, YIN Xiao-gang, CHENG Hu, et al. Technology of Calcium and Magnesium Removal during Preparation of Battery Grade Lithium Carbonate by Hydrogenation Decomposition[J]. Rare Metals and Cemented Carbides, 2018(4): 69-72. |
| MLA | [1] LI Peng-wu, et al., "Technology of Calcium and Magnesium Removal during Preparation of Battery Grade Lithium Carbonate by Hydrogenation Decomposition." Rare Metals and Cemented Carbides, no. 4, 2018, pp. 69-72. |
| APA | [1] LI Peng-wu, YIN Xiao-gang, CHENG Hu, YANG Jin-yu, DONG Xian, & CHEN Zhuo. (2018). Technology of Calcium and Magnesium Removal during Preparation of Battery Grade Lithium Carbonate by Hydrogenation Decomposition. Rare Metals and Cemented Carbides(4), 69-72. |
| IEEE | [1] LI Peng-wu, YIN Xiao-gang, CHENG Hu, YANG Jin-yu, DONG Xian, and CHEN Zhuo, "Technology of Calcium and Magnesium Removal during Preparation of Battery Grade Lithium Carbonate by Hydrogenation Decomposition," Rare Metals and Cemented Carbides, no. 4, pp. 69-72, 2018. keywords: {lithium carbonate;hydrogenation decomposition;calcium;magnesium;impurity removal;complexing agent} |