METHOD AND DEVICE FOR RECOVERING MAGNESIUM

摘要

PROBLEM TO BE SOLVED: To provide a method and device for recovering magnesium for recovering magnesium from seawater without imposing a lot of load on the environment.

SOLUTION: Seawater 7 is electrolyzed; anode electrolysis water 7a and cathode electrolysis water 7b generated by the seawater electrolyzation are separated from each other; an alkaline material is entered in the anode electrolysis water to adjust pH thereof; magnesium is precipitated as magnesium hydroxide in the cathode electrolysis water to be recovered; and the anode electrolysis water after the pH adjustment and the cathode electrolysis water after the magnesium hydroxide recovery are joined each other and discharged by setting the pH thereof equal to that of seawater.

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