磷石膏作水泥缓凝剂的研究

A Research into the Phosphogypsum as Cement Set-controlling Admixture

磷石膏经过水洗或酸洗后用作立窑和旋窑的水泥缓凝剂 ,试验结果表明 ,酸处理的磷石膏配制的水泥凝结性能及强度符合 GB175 - 92 。

After phosphogypsum is washed with water or sulphuric acid,it is used as set-controlling admixture of rotary kiln cement and shaft kiln cement. The experimental result shows that, the setting characteristics and strength of cement made of phosphogypsum processed with sulphuric acid accord with GB175-92 and can meet the needs of production.