METHOD FOR CONCENTRATING FLUORINE ION-CONTAINING AQUEOUS SOLUTION

摘要

PROBLEM TO BE SOLVED: To provide a method for concentrating a fluorine ion-containing aqueous solution capable of increasing the concentration of fluorine ions in the fluorine ion-containing aqueous solution. SOLUTION: In this method for concentrating the fluorine ion-containing aqueous solution, the fluorine ion-containing aqueous solution is introduced into the upper part of a multistage steam evaporation tower with 5-100 stage trays and steam is evaporated.