Removal of calcium and magnesium from lithium concentrated solution by solvent extraction method using D2EHPA
文献类型：期刊论文
| 作者 | Shi, Dong; Cui, Bin; Li, Lijuan ; Xu, Min; Zhang, Yuze; Peng, Xiaowu; Zhang, Licheng; Song, Fugen; Ji, Lianmin
|
| 刊名 | DESALINATION
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 479 |
| ISSN号 | 0011-9164 |
| DOI | 10.1016/j.desal.2019.114306 |
| 英文摘要 | In this work, a solvent extraction process for Ca2+ and Mg2+ removal from Li+ concentrated solution consisted of 30 g/L Li+, 1.5 g/L Ca2+ and 1.5 g/L Mg2+ was proposed, using di-(2-ethylhexyl) phosphoric acid (D2EHPA) as extractant. The extraction process was a cation exchange mechanism, and the extraction sequence was Ca2+ > Mg2+ > Li+ > Nat Under the optimum condition of 66% saponification degree, 3/2 phase ratio and three-stage extraction, the extraction efficiency of Ca2+, Mg2+ and Li+ reached 99.00%, 98.57% and 15.28%, respectively. The extracted cations could be completely stripped by HCl solution, and the co-extracted Li+ could be selectively stripped and separated from Ca2+ and Mg2+ using higher concentration HCl solution at higher phase ratio. A whole removal process for Ca2+ and Mg2+ involving extraction, scrubbing, stripping and saponification sections was put forward, and the process stability was continuously tested on centrifugal extractors. Removal efficiency of Ca2+ and Mg2+ reached 99.05% and 98.48% respectively. Meanwhile, the loss ratio of Li+ was as low as 5.22%. |
| 源URL | [http://ir.isl.ac.cn/handle/363002/33958]  |
| 专题 | 青海盐湖研究所_盐湖资源综合利用工程技术中心 中国科学院青海盐湖研究所 |
| 推荐引用方式 GB/T 7714 | Shi, Dong,Cui, Bin,Li, Lijuan,et al. Removal of calcium and magnesium from lithium concentrated solution by solvent extraction method using D2EHPA[J]. DESALINATION,2020,479. |
| APA | Shi, Dong.,Cui, Bin.,Li, Lijuan.,Xu, Min.,Zhang, Yuze.,...&Ji, Lianmin.(2020).Removal of calcium and magnesium from lithium concentrated solution by solvent extraction method using D2EHPA.DESALINATION,479. |
| MLA | Shi, Dong,et al."Removal of calcium and magnesium from lithium concentrated solution by solvent extraction method using D2EHPA".DESALINATION 479(2020). |
入库方式： OAI收割
来源：青海盐湖研究所
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