Influence of Heat Treatment on Granulated Slag Containing High-calcium Oxide for Preparing Glass-ceramic Han Jianjun Zhao Xiujian Cheng Jinshu School of Materials Science and Engineering, WUT,Wuhan 430070,China.Glass ceramic has been studied and prepared based on materials of granulated slag containing high calcium oxide and cullet.The influence of heat treatment process has been studied for producing this kind of glass ceramic. The samples were analyzed by XRD and SEM. The applying properties have also been measured.industrial waste; glass ceramic; heat treatment