METHOD FOR CONCENTRATING AND RECOVERING OF LITHIUM BY ADDITION OF ALUMINUM COMPOUND AND HEAT TREATMENT FROM LITHIUM SOLUTION AND RECYCLING METHOD OF ALUMINUM BY-PRODUCT MADE THEREBY

摘要

Provided are a method for concentrating and recovering lithium by addition of an aluminum compound and heat treatment from a lithium solution and a recycling method of an aluminum by-product made thereby, wherein the recycling method comprises the following steps of: (a) adding an aluminum compound to a lithium solution to form a lithium-aluminum layer double hydroxide; (b) forming a lithium oxide by heat-treating the lithium-aluminum layer double hydroxide; (c) manufacturing a lithium aqueous solution by water washing a heat-treated product, and applying an aluminum by-product separated in water washing to aluminum compound forming reaction in the (a) step and heat treatment reaction in the (b) step; and (d) concentrating the manufactured lithium aqueous solution, and applying the generated aluminum by-product generated in concentration to water washing in the (c) step.