Method for producing lithium-containing solution

Abstract

Provided is a method for producing a lithium-containing solution that allows suppressing production cost for lithium production by suppressing solution amount after an adsorption step, increasing a lithium content rate in the lithium-containing solution, and suppressing amount of solution used in a step after a manganese oxidation step. The method for producing a lithium-containing solution performs the adsorption step, an eluting step, and an manganese oxidation step in this order. In the adsorption step, an anion-exchange resin is used together with the lithium adsorbent. This aspect allows hydrogen ions generated in the adsorption step to be adsorbed by the anion-exchange resin, thereby promoting an adsorption reaction. Therefore, the solution amount after the adsorption step can be suppressed, the lithium content rate in the lithium-containing solution increases, the amount of the solution used in the step after the manganese oxidation step is suppressed. This allows suppressing production cost for lithium production.

Dependencies are inferred from the claim text.