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Lithium Recovery from the Mother Liquor Obtained in the Process of Li2CO3 Production
Wang, Junfeng1; Yang, Shicheng2; Bai, Ruibing1; Chen, Yongmei2; Zhang, Suojiang1
2019-01-23
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume58Issue:3Pages:1363-1372
AbstractIt 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.
DOI10.1021/acs.iecr.8b05495
Language英语
WOS KeywordSOLVENT-EXTRACTION ; BETA-DIKETONE ; SELECTIVE EXTRACTION ; BRINE ; SEPARATION ; RESOURCES ; MAGNESIUM ; SODIUM
Funding ProjectNational 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 Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational 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
WOS IDWOS:000457066900022
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27910
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Suojiang
Affiliation1.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
Recommended Citation
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.
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