“…where, L TR is the lithium theoretical recovery rate, m is the mass of lithium carbonate precipitated completely, m d is the solubility of lithium carbonate in a specific temperature, C Li is the concentration of lithium, V is the solution volume, 6.94 is the molecular weight of lithium, 73.89 is the molecular of lithium carbonate. Ultrasound influences not only the crystallization ratio of supersaturated solution but also the size distribution of product [35]. In order to investigate the effect of ultrasound on lithium recovery rate and purity of Li 2 CO 3 , other parameters were selected as follows: solid Na 2 CO 3 , Na + to Li + of 1, at 343 K for 35 min.…”