Phosphogypsum is calcined into anhydrite at high temperature and can be used as the raw material of compound silicon cement and then made into floor gypsum.

• 将磷石膏在高温下煅烧成无水硬石膏,在合适的激发剂作用下,使之达到复合硅酸盐水泥质量要求,即制成地板石膏;