透辉石
材料科学
成核
结晶
磨细高炉矿渣
陶瓷
熔渣(焊接)
尾矿
扫描电子显微镜
玻璃陶瓷
冶金
萤石
差示扫描量热法
矿物学
复合材料
化学工程
水泥
化学
有机化学
工程类
物理
热力学
作者
Wei Zhao,Xiaofeng Huang,Bingji Yan,Shaoyan Hu,Hongwei Guo,Dong Chen
出处
期刊:Sustainability
[MDPI AG]
日期:2021-10-09
卷期号:13 (20): 11144-11144
被引量:16
摘要
Diopside-based glass-ceramics are successfully produced by recycling blast furnace slag and fluorite tailing with the addition of supplementary elements such as TiO2, Fe2O3 and Cr2O3 as nucleation agents, using a conventional melting method. The effects of various nucleating agents on the phase components and structure of the prepared glass-ceramics were evaluated by a differential scanning calorimeter, X-ray diffraction and scanning electron microscope–energy disperse spectrometer methods to determine the optimal dosage of nucleating agents. The results show that, in the preparation of diopside-based glass-ceramics, the suitable percentages of blast furnace and fluorite tailing are 55% and 45%, and the recommended composite nucleating agents consist of 1.5% Cr2O3, 2% TiO2 and 3% Fe2O3. Heat treatment was conducted at a nucleation temperature of 720 °C and a crystallization temperature of 920 °C, and the nucleation and crystallization durations were 1.0 h and 1.5 h, respectively. Under the abovementioned parameters, the obtained diopside-based glass-ceramics displayed a Vickers hardness of 7.12 GPa, density of 2.95 g·cm−3, water absorption of 0.02%, acid resistance of 0.23% and alkali resistance of 0.02%.
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