Preliminary Study of Making Anhydrite Cement from Phosphogypsum

The preparation of anhydrite cement from phosphogypsum produced as the waste of phosphoric acid manufacture has been studied.Through the examination of the sample's physical nature and hydration and the analysis of its hydration mechanism,it revealed that calcined phosphogypsum,slag,clinker,and chemical activators in a certain mixing ratio are ground finely to make the anhydrite cement with higher compression.