Preparation of Glass Ceramic Made from Fly Ash


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Using fly ash from the power plant and SiO2 as the main raw materials, glass-ceramic was prepared by melting method. By means of DSC, XRD and SEM, the crystallizations of CaO-Al2O3-SiO2 system glass-ceramic were studied. The results show that it is more and more difficult to crystallize as the content of SiO2 increases. When the content of SiO2 reaches to 41.5%, the crystal nucleus form in the form of shuttle shape, the crystals develop in the same direction for a certain zone. But the crystals develop into hexagon shape finally when they are heated for 1 h at 1100°Cafter nucleation at 780°C.The developed crystals are anorthite. The sizes of crystals are between 1- 1.5μm, their microhardness can reach HV804.



Advanced Materials Research (Volumes 295-297)

Edited by:

Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu




F. Li and X. D. Liu, "Preparation of Glass Ceramic Made from Fly Ash", Advanced Materials Research, Vols. 295-297, pp. 487-490, 2011

Online since:

July 2011




[1] DeGuire, E. J. and Risbud, S. H., Crystallization and properties of glasses prepared from Illinois coal fly ash. J. Mater. Sci., 1984, 19, 1760-1766.


[2] Cumpston, B., Shadman, F. and Risbud, S. H., Utilization of coal-ash minerals for technological ceramics. J. Mater. Sci., 1992, 27, 1781-1784.


[3] Suzuki, S., Tanaka, M. and Kaneko, T., Glass-ceramic from sewage sludge ash. J. Mater. Sci., 1997, 32, 1775-1779.

[4] Dwivedi, A., Berta, Y. and Speyer, R. F., Effect of controlled crystallization on the chemical durability of lead-containing waste glass. J. Mater. Sci., 1994, 29, 2304-2308.


[5] Barbieri, L., Bonamartini, A. C. and Lancellotti, L., Alkaline and alkaline earth silicate glasses and glass–ceramics from municipal and industrial wastes. J. Eur. Ceram. Soc., 2000, 20, 2477–2483.


[6] Ferreira, C., Ribeiro, A. and Ottosen, L., Possible applications for municipal solid waste fly ash. J. Hazard. Mater., 2003, B96, 201–216.