METHOD FOR MANUFACTURING HIGH PURITY LI2CO3 IMPROVED RECOVERY YIELD

摘要

PURPOSE: A method for manufacturing high purity lithium carbonate with improved collecting rate is provided to cost-effectively obtain lithium carbonated from brine based on a precipitating process and a forced evaporating process. CONSTITUTION: Magnesium ions are eliminated from brine(s110). Sulfate ions are eliminated(s120). Lithium ions are concentrated based on a forced evaporating process. Remaining impurities are eliminated after the forced evaporating process(s130). The lithium ion is carbonated using sodium carbonate. The forced evaporating process is implemented based on an atmospheric evaporating process or a vacuum evaporating process. The volume of concentrated solution after the forced evaporating process is 1/20-1/40 of the volume of the brine.