Development of Phosphogypsum Dry Powder Mortar

The possibility of transforming phosphogypsum into calcined gypsum has been studied. The properties of phosphogypsum have been analyzed and the best technological procedure of changing phosphogypsum into calcined gypsum has been determined. By pre-treating phosphogypsum and eliminating some impurities, we can get β-type gypsum. Using this material and other additives, we produce a new phosphogypsum building plaster with higher additional value.