FLUOROION ELIMINATING MATERIAL AND METHOD

摘要

This relates to a soluble rare earth based dissolved fluoride ion remover and removing method using this remover. This remover is composed of soluble rare earth compds above 60wt.% such as La and Ce, the other soluble compds below 40wt.% and Ca and Na compds below 1wt.%. And the removing method comprises 1)controlling pH of the solution to below 9.0; 2)adding this F ion remover; and 3)carrying out the solid-liquid separation. And the adding amount of ion remover is 1.2 times of dissolved fluoride equivalent