CAS OpenIR
Development of a thermodynamic model for the Li2CO3-NaCl-Na2SO4-H2O system and its application
Wang, Junfeng1; Wu, Xiaowang2; Zhang, Suojiang1
2018-08-01
Source PublicationJOURNAL OF CHEMICAL THERMODYNAMICS
ISSN0021-9614
Volume123Pages:62-73
Abstract

The study of the solid-liquid phase equilibrium for the Li2CO3-NaCl-Na2SO4-H2O system is of significance to separate lithium from the mother liquor obtained by the reaction of lithium chloride/lithium sulfate and sodium carbonate. The phase equilibrium data for the binary system of Li2CO3-H2O, the ternary systems of Li2CO3-NaCl-H2O and Li2CO3-Na2SO4-H2O, and the quaternary system of Li2CO3-NaCl-Na2SO4H2O over the temperature range from 283.15 K to 363.15 K were measured. Based on the Pitzer's model embedded in the Aspen Plus', the phase equilibrium data for the systems of NaCl-H2O, Na2SO4-H2O and NaCl-Na2SO4-H2O taken from literatures were firstly predicted to verify the applicability of parameters from the default database and literatures. Subsequently, besides the solubility of Li(2)CO(3)in water at different temperatures, the values for the systems of Li2CO3-NaCl-H2O and Li2CO3-Na2SO4-H2O at 298.15 K and 343.15 K were correlated, and then the obtained parameters can well predict the phase equilibrium data for the systems of Li2CO3-NaCl-H2O, Li2CO3-NaCl-H2O-H2OLi2CO3-NaCl-Na2SO4-H2O at T= (313.15, 323.15 or 363.15) K. Through the rigorous thermodynamic model representing theLi(2)CO(3)-NaClNa2SO4-H2O system developed, the phase diagram of the ternary Li2CO3-NaCl-H2O system at T(298.15, 343.15 or 363.15) K visualized with lucidity, and the course of crystallization to produce Li2CO3 from the mother liquor was illustrated. All of these will provide a thermodynamic basis for the separation of lithium from mother liquor and optimization of Li2CO3 production process. (C) 2018 Elsevier Ltd.

KeywordLithium Carbonate Sodium Chloride Sodium Sulfate Phase Equilibria Modeling
DOI10.1016/j.jct.2018.03.027
Language英语
WOS KeywordChemical-equilibrium Model ; Solid-liquid Equilibrium ; Mineral Solubilities ; Lithium-carbonate ; Phase-equilibrium ; 298.15 k ; Li2co3 ; Temperatures ; Prediction ; Behavior
Funding ProjectNational Natural Science Foundation of China[U1407111] ; Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2017-A-08] ; Program of National Natural Science Foundation of China[91434203] ; Key Research Program of Frontier Sciences CAS[QYZDY-SSW-JSC011]
WOS Research AreaThermodynamics ; Chemistry
WOS SubjectThermodynamics ; Chemistry, Physical
Funding OrganizationNational Natural Science Foundation of China ; Fund of State Key Laboratory of Multiphase Complex Systems ; Program of National Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS
WOS IDWOS:000432588200009
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24606
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.Qinghai CITIC Guoan Sci & Technol Dev Co Ltd, Geermu 816000, Qinghai, Peoples R China
Recommended Citation
GB/T 7714
Wang, Junfeng,Wu, Xiaowang,Zhang, Suojiang. Development of a thermodynamic model for the Li2CO3-NaCl-Na2SO4-H2O system and its application[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2018,123:62-73.
APA Wang, Junfeng,Wu, Xiaowang,&Zhang, Suojiang.(2018).Development of a thermodynamic model for the Li2CO3-NaCl-Na2SO4-H2O system and its application.JOURNAL OF CHEMICAL THERMODYNAMICS,123,62-73.
MLA Wang, Junfeng,et al."Development of a thermodynamic model for the Li2CO3-NaCl-Na2SO4-H2O system and its application".JOURNAL OF CHEMICAL THERMODYNAMICS 123(2018):62-73.
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