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Phosphogypsumis an industrial byproduct from phosphoric acid production.In order to consume as much PG as possible, belite sulfoaluminate cements were produced by incorporating high amounts of PG into raw mix.The presence of sulfate in the clinker is in the form of anhydrite in addition to calcium sulfoaluminate.The aim of this paper is to study the effect of anhydrite on cement properties and hydration process.The mineral composition and hydration products were investigated using by X-ray diffraction and thermogravimetric analysis.Experimental results indicated that burning at 1270 ℃ for 30 min was suitable for clinker production.The presence of anhydrite can prolong the setting time and improve the compressive strength.Compared with natural gypsum, anhydrite in the clinkers can promote the formation of ettringite.Results also show that the incorporation of PG into the production of sulfate-rich BSA cement is a promising way for the utilization of PG.