Through analysing the chemical composition and physical characters of gypsum and waste residue of producing citricacid, the reasibility that we utilize waster residue istead of gypsum to producesolidifing buffer of cement is probed into.

• 分析了柠檬酸生产废渣和石膏的化学成份及物理性质，探讨了用废渣代替石膏作为生产水泥缓凝剂的可行性。