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Lithium Recovery from the Mother Liquor Obtained in the Process of Li2CO3 Production

文献类型：期刊论文

作者Wang, Junfeng1; Yang, Shicheng2; Bai, Ruibing1; Chen, Yongmei2; Zhang, Suojiang1
刊名INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
出版日期2019-01-23
卷号58期号:3页码:1363-1372
ISSN号0888-5885
DOI10.1021/acs.iecr.8b05495
英文摘要It is important to find an effective way to separate lithium from the mother liquor obtained by the reaction of lithium chloride/lithium sulfate and sodium carbonate. A synergistic solvent extraction system containing 1-phenyl-3-heptyl-1,3-propanedione (PHPD) and liquid mixture of trialkyl-phosphine oxides (Cyanex923) to separate lithium from the system of Li++Na++Cl-+CO32-+H2O was developed. The pH of the aqueous solution showed an important effect on the lithium extraction. At pH 13.06, PHPD alone showed a high extractability of lithium, but the addition of Cyanex923 led to a high separation ability of lithium over sodium due to the synergistic extraction effect. For a single extraction, the extraction percentage of lithium was 97.83% from the solution with 1.39 g.L-1 Li and 68.97 g.L-1 Na using the extraction system containing 0.4 mol.L-1 PHPD and 0.2 mol.L-1 Cyanex923 at the A/O ratio of 1:1, initial aqueous pH of 13.06, and 293.15 K, and the separation factor of lithium over sodium reached 475.06. On the basis of the McCabe-Thiele diagram of lithium extraction, two stages need to be used to achieve the complete extraction of lithium with an A/O ratio of 1.8. The extracted lithium species obtained by the slope analysis method were LiES and LiES2, where E and S represent the deprotonated PHPD and Cyanex923, respectively. The electrospray ionization mass spectra (ESI-MS) further confirmed that another two main Li adducts existing in the organic phase were LiE and LiE(H2O). The extracted lithium could be completely stripped from the loaded organic solution with hydrochloride of 0.5 mol.L-1 at an A/O ratio of 1:1. All of these will provide a theoretical basis for lithium separation from the mother liquor obtained during the process of lithium carbonate production.
WOS关键词SOLVENT-EXTRACTION ; BETA-DIKETONE ; SELECTIVE EXTRACTION ; BRINE ; SEPARATION ; RESOURCES ; MAGNESIUM ; SODIUM
资助项目National Natural Science Foundation of China[U1407111] ; Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2017-A-08] ; Key Program of National Natural Science Foundation of China[91434203] ; Key Research Program of Frontier Sciences CAS[QYZDY-SSW-JSC011]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000457066900022
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; Fund of State Key Laboratory of Multiphase Complex Systems ; Key Program of National Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS
源URL[http://ir.ipe.ac.cn/handle/122111/27909]  
专题中国科学院过程工程研究所
通讯作者Zhang, Suojiang
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Beijing Univ Chem Technol, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Junfeng,Yang, Shicheng,Bai, Ruibing,et al. Lithium Recovery from the Mother Liquor Obtained in the Process of Li2CO3 Production[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2019,58(3):1363-1372.
APA Wang, Junfeng,Yang, Shicheng,Bai, Ruibing,Chen, Yongmei,&Zhang, Suojiang.(2019).Lithium Recovery from the Mother Liquor Obtained in the Process of Li2CO3 Production.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,58(3),1363-1372.
MLA Wang, Junfeng,et al."Lithium Recovery from the Mother Liquor Obtained in the Process of Li2CO3 Production".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 58.3(2019):1363-1372.

入库方式： OAI收割

来源：过程工程研究所

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