The Crystallization and Properties of Glass-Ceramics of Cao-Al2O3-Sio2-R2O from Coal Fly Ash
详细信息
- 责任者：Cao Chao (Key Laboratory of Solid Waste Treatment and Resource Recycle ; Southwest University of Science and Technology ; Ministry of Education ; Mianyang 621010 ; China) ; Peng Tongjiang
- 刊名：Acta Mineralogica Sinica
- 出版年：2013
- 卷期：33(2)
- 页码：p.141-146
- issnNo：ISSN1000-4734
- isbnNo：CN52-1045/P
摘要
The glass-ceramics was prepared with coal fly ash,limestone and Na2CO3 by sintering process.Crystallization behavior,microstructure and physicochemical properties of glass-ceramics samples were analyzed by means of DTA,XRD,SEM and other analytical methods.The results show that the major phase of the glass-ceramics samples under certain heating treatment was gehlenite (Ca2Al2SiO7),and [K(Na,K)3Al4Si4O16] was the minor crystalline phase. The glass-ceramics with the highest dense which was 2.82 g/cm3 and the best chemical stability were obtained by nucleating at 760 ℃,then crystallizing at 960 ℃. The glass-ceramics consist of small crystals with sizes ranging from 0.4 to 0.6 μm.