Effect of Na₂O Content on Crystallization Behavior and Properties of Glass-Ceramics Prepared by Utilizing Tailing of BISCO

The Effect of Na2O content on crystallization behavior and properties of glass-ceramics preparing by utilizing tailing of BISCO was studied by means of DSC,XRD,SEM.The results show that with the increase of Na2O content the crystallization temperature of the glass-ceramics decreased.When the Na2O content was larger than 6.7wt% the main crystal phases changed from hedenbergite to nepheline.When the Na2O content was 36wt%,the maximum bending strength of the glass-ceramics was 150.4 MPa,and the maximum density was 3.4 g·cm-3.