LI Baoqing 1,2,3, GUO Yanping 1,2, FANG Hongsheng 1,2, DANG Haifeng 4, HUANG Ling 1, LIANG Zhanxing 5, WANG Wenxiang1,2
(1.Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, Guangdong China; 2. Guangdong
Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control,
Foshan 528216, Guangdong China; 3.South China Normal University, Guangzhou 510631, Guangdong China; 4. School
of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, Guangdong China;
5. Guangzhou Environmental Protection Technology and Equipment Company, Guangzhou, Guangdong China 510091)
Abstract: Glass-ceramics with the pyroxene, forsterite and mullite as the crystalline phases were prepared using fly ash, waste panel glass and chemical reagents by melting method. Effect of crystallization temperature (940 °C-1060 °C) on the crystal performance and microstructure of glass-ceramic samples was analyzed by means of differential scanning calorimetry (DSC), X-ray diffraction (XRD), and scanning electron microscope (SEM). The properties of density, water absorption, flexural strength and micro hardness were also measured. The results showed that the glass-ceramics with the highest bulk density (2.81 g/cm3), highest flexural strength (83.78 MPa), highest micro hardness (7.4 GPa) and the minimum water absorption (0.10%) were obtained by crystallizing at 1030 °C.
Key words: glass-ceramics; crystallization temperature; fly ash; crystallization behavior