Solvent extraction of lithium from hydrochloric acid leaching solution of high-alumina coal fly ash
文献类型：期刊论文
| 作者 | Rui, Hongming; Zhang, Licheng ; Li, Lijuan; Zhu, Lixia
|
| 刊名 | CHEMICAL PHYSICS LETTERS
 |
| 出版日期 | 2021-05-16 |
| 卷号 | 771 |
| ISSN号 | 0009-2614 |
| DOI | 10.1016/j.cplett.2021.138510 |
| 英文摘要 | The present work used solvent extraction method to extract lithium from hydrochloric acid leaching solution of high-alumina coal fly ash. In extraction stage, the optimum conditions were explored, at 20 ? and O/A = 1:4, using 70%(Vol.) tributyl phosphate-30%(Vol.) sulfonated kerosene-0.36 mol/L Fe3+ as extractant, extraction of lithium could reach 99% by two-stage extraction. In scrubbing stage, 95% of Al3+ in loaded organic phase was scrubbed with 6 mol/L HCl at O/A = 40:1, then 97% of Ca2+ in the loaded organic phase was scrubbed by threestage countercurrent scrubbing with 5.5 mol/L LiCl + 0.5 mol/L HCl at O/A = 30:1. In stripping stage, 99% of Li+ in scrubbed organic phase was stripped by five-stage countercurrent stripping with 6 mol/L HCl at O/A = 10:1. In regeneration stage, 2 mol/L NaOH was used as regenerant to remove free acid and exchange H+ of extractive compound. There were no third phase, emulsification and solid deposition during the whole experiment. The structure of extractive compound was determined by slope method, and extracted complex ratio of Li+, Fe3+, and TBP was 1:1:1. The extraction process was found to be exothermic and spontaneous by thermodynamic study.Therefore, it?s a promising method to recover lithium from hydrochloric acid leaching solution of highalumina coal fly ash by TBP-FeCl3-sulfonated kerosene extraction system. |
| 源URL | [http://ir.isl.ac.cn/handle/363002/34178]  |
| 专题 | 青海盐湖研究所_盐湖资源综合利用工程技术中心 |
| 推荐引用方式 GB/T 7714 | Rui, Hongming,Zhang, Licheng,Li, Lijuan,et al. Solvent extraction of lithium from hydrochloric acid leaching solution of high-alumina coal fly ash[J]. CHEMICAL PHYSICS LETTERS,2021,771. |
| APA | Rui, Hongming,Zhang, Licheng,Li, Lijuan,&Zhu, Lixia.(2021).Solvent extraction of lithium from hydrochloric acid leaching solution of high-alumina coal fly ash.CHEMICAL PHYSICS LETTERS,771. |
| MLA | Rui, Hongming,et al."Solvent extraction of lithium from hydrochloric acid leaching solution of high-alumina coal fly ash".CHEMICAL PHYSICS LETTERS 771(2021). |
入库方式： OAI收割
来源：青海盐湖研究所
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