Method for recovering lithium from lithium-salt-containing aqueous solution

Abstract

Provided is a method for recovering lithium from lithium-salt-containing aqueous solution by using small-scale equipment in a short time. The method for recovering lithium from lithium-salt-containing aqueous solution includes an aluminum hydroxide producing step of producing aluminum hydroxide in the aqueous liquid containing a lithium salt. In one embodiment of this lithium recovery method, aluminum phosphate is removed from a first slurry containing a mixture of lithium phosphate obtained from a first aqueous lithium salt solution and aluminum hydroxide to provide a second aqueous lithium salt solution, a second slurry obtained by adding an aluminum salt to the second aqueous lithium salt solution is adjusted to a specific condition, and a precipitate of aluminum phosphate is filtered off and removed from the second aqueous lithium salt solution to provide a high-purity aqueous lithium salt solution.

Dependencies are inferred from the claim text.