Recovering Lithium from Clays
Soda ash reacts with the aqueous Li2SO4 and generates 27 st/d of Li2CO3 precipitate. The overall reaction is. Li2SO4 + Na2CO3 → Li2CO3 + Na2SO4. The product slurry is separated with two pressure- leaf filters into Li2CO3 solids and barren filtrate. The solids are dried at 300° C, cooled, and conveyed to storage silos.