Crystallization and properties of high calcium glass-ceramics synthesized from ferromanganese slag
Crystallization and properties of high calcium glass-ceramics synthesized from ferromanganese slag
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DOI：
10.1016/j.jnoncrysol.2019.119864
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发表时间：
2020-03
影响因子：
3.5
通讯作者：
Lishun Chen;Xuexiang Ge;Yuting Long;Mingkai Zhou;Wang Huaide-;Xiao Chen
中科院分区：
文献类型：
--
作者：
Lishun Chen;Xuexiang Ge;Yuting Long;Mingkai Zhou;Wang Huaide-;Xiao Chen
Ferromanganese slag (containing 41.7 wt% CaO and 4.5 wt% Al2O3) was used as main raw material to synthesize high calcium glass-ceramics. The amount of ferromanganese slag is 72.4-88.7 wt%. By adjusting Al2O3content, the rapid crystallization problem in preparing high calcium glass-ceramics by using high content of ferromanganese slag was solved. Moreover, the effects of Al2O3content on crystallization behavior, microstructure and sintering properties of high calcium glass-ceramics were investigated. The results showed that Al2O3broadened the sintering temperature range of the powder and improved the uniformity of the grain distribution, achieving effective control of heat treatment process of high calcium glass-ceramics. With the increase of Al2O3content, the crystallization activation energy increased from 199.7 to 236.9 kJ/mol, and the main crystalline phase changed from Ca2MgSi2O7to Ca2Al(AlSiO7). When the Al2O3content was at 11 wt%, the sample strength was 67 MPa and the water absorption rate was 1.8%.
