Effect of Impurity Ions on Solubility and Metastable Zone Width of Lithium Metaborate Salts

The metastable zone width (MZW) of lithium metaborate salts at various concentrations was determined using the laser technique. The solubility data for lithium metaborate salts was nearly the same in the presence of NaCl at various concentrations. The MZW of lithium metaborate salts decreased when the stirring rate increased, but increased remarkably with increasing cooling rates and an increasing concentration of sodium chloride. The apparent secondary nucleation order for lithium metaborate salts was obtained using the Nyvlt's approach. The apparent secondary nucleation order m of lithium metaborate salts is 4.00 in a pure LiBO2-H2O system with an improved linear regression method. The m for lithium metaborate salts was enlarged in the system LiBO2-NaCl-H2O.