Abstract
Granite process industry generates a large amount of wastes, which pollute and damage the environment. This work aims to investigate the possibilities of using the granite sawing wastes in the production of glass-ceramics. Granite wastes with other components were used to prepare glass-ceramics. The crystallization behavior and properties of the glass-ceramics were investigated. The results showed that the activation energy for crystallization (Ec) was 463 kJ/mol and Avrami parameter (n) was 2.68, suggested a two dimension crystal growth mechanism. The main crystalline phase of all the obtained glass-ceramics was diopside. With the increase of heat treatment temperature, the diffraction peak intensity of diopside firstly increased and then decreased slightly. The minor crystalline phases spinel and Mg4Al2Ti9O25 were observed above 970°C. When heated at 970 °C for 1h, the sample exhibited the highest Vicker's hardness and bending strength values, 7.3 GPa and 151 MPa, respectively. And the glass-ceramics showed better acid resistant than alkali resistant.
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