Method for producing lithium hydroxide with ionic membrane electrolytic method

The invention discloses a method for producing lithium hydroxide with an ionic membrane electrolytic method. The method comprises the following eight steps of preparation of concentrated solution, primary impurity removal, deep impurity removal, production of lithium carbonate precipitates, cleaning of lithium carbonate, preparation of lithium hydrogencarbonate, preparation of high-purity lithiumcarbonate with decarbonization and preparation of the lithium hydroxide with ionic membrane electrolysis. Compared with the prior art, by adopting the method provided by the invention, the prepared lithium hydroxide is high in purity; in the subsequent process of preparing the lithium hydroxide with ionic membrane electrolysis, the prepared lithium hydroxide is high in purity, the electrolytic efficiency of electrolysis is higher than the electrolytic efficiency of the prior art, and the method is a method for preparing the high-purity lithium hydroxide, which is worthy of popularization. 本发明公开了种离子膜电解法生产氢氧化锂的方法，包括浓缩液的