脱硫石膏作水泥缓凝剂研究

研究了利用脱硫石膏作水泥缓凝剂的水泥性能以及脱硫石膏的作用机理。研究表明，脱硫石膏中含有一定量的碳酸钙，掺入脱硫石膏，水泥凝结时间正常，对水泥力学性能和安定性有积极作用，可以代替天然石膏用于水泥生产。此外还研究了脱硫石膏的造粒以及使用脱硫石膏给生产企业带来的显著经济效益。

Study on using desulfuration gypsum as cement setting retarder

Cement properties for using desulfuration gypsum as cement setting retarder and mechanism of reactions of desuifturation gypsum are stated in this artical. The result shows that normal setting time of cement and good effects for mechanical properties and soundness of cement can be got when adding desulfuration gypsum containing a certain amount of calcium carbonate. So it can be used instead of natural gypsum to produce cement. In addition, authors also introduce the granule making of desulfuration gypsum and that manufacturing enterprise can achieve remarkable economical benefit when using desulfuration gypsum.