Method for improving reverse flotation separation of siliceous gangue from fluorapatite

The method for improving reverse flotation separation of siliceous gangue from fluorapatite is a method for complex reverse flotation desilication operation of fluorapatite difficult to separate, andthe effect of separating fluorapatite from siliceous gangue through cationic reverse flotation can be effectively improved. During fluorapatite reverse flotation desilicication operation, a proper amount of Ca < 2 + > is added to react with F in ore pulp to form CaF deposited on the surface of fluorapatite, so that fluorination of the surface of fluorapatite is realized, and an inhibition effect is achieved; ca < 2 + > can react with F on the surface of fluorapatite, so that F sites of apatite are reduced, and the electronegativity of the surface is reduced. In addition, a proper amount of Ca < 2 + > is added to effectively reduce the generation of foam, improve the foam property, reduce entrainment and improve the desilicication effect. The specific operation method comprisesthe steps that the proper