Isothermal dissolution method was employed to measure the solubility and turbidity technology was employed to measure the supersolubility and metastable zone width of Li2CO3 in mixed LiCl-NaCl-KCl-Na2SO4 solutions at temperatures ranging from 293.15 to 353.15K. It was found that solubility values of Li2CO3 increased as the Na2SO4 concentration increased and decreased as NaCl and KCl concentration increased. In addition, these two opposite effects both affected the solubility of Li2CO3 in mixed electrolyte solutions. NaCl and KCl Impurities decreased Li2CO3 supersolubility, which could be overcome by adding a small amount of Na2SO4 salt. The influence of the impurities on metastable zone width differed from their influence on solubility. The metastable zone width in electrolyte solutions was mainly affected by Na2SO4 salt, where it increased with increasing Na2SO4 concentration. Meanwhile, NaCl and KCl salts had little impact on metastable zone width. Overall, this study provides the basic data for crystallization process of lithium carbonate from salt lake brines in industrial production process.
Compounds
#
Formula
Name
1
ClLi
lithium chloride
2
CLi2O3
lithium carbonate
3
H2O
water
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.