System for recovering high-purity fluorite from fluorine-containing wastewater

The invention discloses a system for recovering high-purity fluorite from fluorine-containing wastewater. The system comprises a fluidized bed, and a water distribution area, an induced crystallization area and a settling area are sequentially arranged in the fluidized bed; the system further comprises a pretreatment device, a crystallizing agent storage tank and a collection pool. The water distribution area is located at the fluidized bed bottom; a water distributor connected with a water inlet of the fluidized bed is arranged in the water distribution area, and a polytetrafluoroethylene ball layer is stacked on the water distributor; at least three layers of medicine distributors which are distributed at equal intervals are arranged in the induced crystallization area and are arranged above the polytetrafluoroethylene ball layer, and each layer of medicine distributor is connected with a medicine inlet in the side wall of the fluidized bed; and a crystal separation device is arranged above the medicine dis