In this paper, experimental study is made on decomposition temperature, decomposition ratio of calcined anhydrite, activity of decomposition products and stimulating effect on fly ash.

• 对高温煅烧硬石膏的分解温度与分解率，分解产物的活性与对粉煤灰的激发效应进行了试验研究，提出了初期和后期两期激发机理。