Method for separating collophanite

The invention relates to a method for separating collophanite, which is characterized by comprising the following steps of: (1) coarsely grinding raw collophanite; (2) performing reverse floatation on the grinding product to remove magnesium; (3) reacting floatation base flow of the step (2) with a desulfurization floatation medicament for reverse floatation to remove sulfur; (4) reacting the floatation base flow in the step (3) with a desilicification floatation medicament for reverse floatation to remove silicon; (5) performing intensity magnetic separation on the floatation base flow in the step (4) to remove iron; (6) regrinding a non-magnetic product in the step (5); (7) reacting the grinding product in the step (6) with a desulfurization floatation medicament for reverse floatation to remove sulfur; and (8) reacting the floatation base flow in the step (7) with a dealumnization floatation medicament for reverse floatation to remove aluminum to obtain aluminum-containing floatation foam and the floatatio