Solubilities, Densities, Refractive Indices, and pH Values of Ternary Systems (LiCl + Li2CO3 + H2O) and (Li2SO4 + Li2CO3 + H2O) at 288.15 K

Solid-liquid phase equilibria of the ternary systems (LiCl + Li 2 CO 3 + H 2 O) and (Li 2 SO 4 + Li 2 CO 3 + H 2 O) are very important for the separation of lithium salts from the salt lake brines. In this paper, the experimental solubilities, densities, refractive indices, and pH values of the tern...

Full description

Saved in:
Bibliographic Details
Published in:Russian journal of inorganic chemistry 2021-12, Vol.66 (14), p.2116-2122
Main Authors: Yang, Mang-mang, Jiang, Jie, Gao, Chao, Guo, Ya-fei, Wang, Shi-qiang
Format: Article
Language:English
Subjects:
Brines
Chemistry
Chemistry and Materials Science
Crystallization
Empirical equations
Inorganic Chemistry
Liquid phases
Lithium
Lithium carbonate
Lithium chloride
Phase equilibria
Physical Methods of Investigation
Refractivity
Salt lakes
Salting
Solubility
Ternary systems
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Solid-liquid phase equilibria of the ternary systems (LiCl + Li 2 CO 3 + H 2 O) and (Li 2 SO 4 + Li 2 CO 3 + H 2 O) are very important for the separation of lithium salts from the salt lake brines. In this paper, the experimental solubilities, densities, refractive indices, and pH values of the ternary systems (LiCl + Li 2 CO 3 + H 2 O) and (Li 2 SO 4 + Li 2 CO 3 + H 2 O) at 288.15 K and 0.1 MPa were investigated by means of isothermal solution method. In ternary system (LiCl + Li 2 CO 3 + H 2 O), there are one eutectic point and two crystallization regions corresponding to Li 2 CO 3 and LiCl·2H 2 O. Lithium chloride has a strong salting-out effect to lithium carbonate. The crystallization region of Li 2 CO 3 was the largest, indicating Li 2 CO 3 could be easily crystallized and separated from brines. In ternary system (Li 2 SO 4 + Li 2 CO 3 + H 2 O), there are one eutectic point and two crystallization regions corresponding to the large area of Li 2 CO 3 and the relative small area of Li 2 SO 4 ·H 2 O, respectively. The variation trend of solution densities, refractive indices and pH values in the two ternary systems are similar and change regularly with the increasing of the concentration of lithium sulfate or lithium chloride. The calculated values of density and refractive index using empirical equations for the two ternary systems are in good agreement with the experimental values.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023621140072