Experimental and Thermodynamic Modeling Study of the Solid-Liquid Equilibria in the Quaternary System (LiCl + MgCl2+Li2SO4+MgSO4+H2O) at 288.15 K and 0.1 MPa

被引：3
|
作者：
Li, Dongchan [1 ,2 ]
Gu, Shaoqiang [1 ]
Li, Ce [1 ]
机构：
[1] Hebei Univ Technol, Minist Educ, Coll Chem Engn & Technol, Engn Res Ctr Seawater Utilizat Technol, Tianjin 300130, Peoples R China
[2] Natl Local Joint Engn Lab Energy Conservat Chem P, Tianjin 300130, Peoples R China
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2022年 / 67卷 / 05期
基金：
中国国家自然科学基金;
关键词：
SOLUBILITY PHASE-DIAGRAM; LAKE BRINE SYSTEM; MINERAL SOLUBILITIES; NATURAL-WATERS; NA-K-MG-CA-CL-SO4-H2O SYSTEM; 298.15; K; PREDICTION; LITHIUM; LI+; 25-DEGREES-C;
D O I：
10.1021/acs.jced.2c00039
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Solid-liquid phase equilibria of the quaternary system (LiCl + MgCl2+Li2SO4+ MgSO4+H2O) atT= 288.15 K andp= 0.1 MPa were investigated using theisothermal dissolution equilibrium method, and a dry salt diagram and a water diagram wereplotted accurately. The phase diagram of this quaternary system includes four invariantpoints, nine univariant solubility curves, and six crystallization regions corresponding toLi2SO4middotH2O, LiClmiddot2H2O, LiClmiddotMgCl2middot7H2O, MgCl2middot6H2O, MgSO4middot7H2O, and MgSO4middot6H2O. The double salt of LiClmiddotMgCl2middot7H2O was found, and no solid solution was formed.The Pitzer model and its extended Harvie-Moller-Weare (HMW) model were used forpredicting the solubilities of the quaternary system (LiCl + MgCl2+Li2SO4+ MgSO4+H2O) at 288.15 K, and the predicted results agree well with the experimental values
引用
收藏
页码：1299 / 1306
页数：8
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