| Title | Effect of Particle Sizes of Preheating andalusite aggregate on the Properties of Mullite-based Refractory |
| Thematic area | Raw Materials |
| Presenter | Dr. Qingfeng Wang |
| Authors | Mr. Qingfeng Wang, School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang - People’s Republic of China Mr. Wei Tang, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou - People’s Republic of China Mrs. Xiaoyu Wang, School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang - People’s Republic of China Mr. Liusheng Li, School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang - People’s Republic of China Mr. Guihua Liao, School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang - People’s Republic of China Mr. Guotian Ye, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou - People’s Republic of China |
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Abstract
In this work, the different particle sizes (5-3mm, 3-1mm, <1mm) of andalusite aggregate were preheated at 1400°C for 3h to substitute the same size of mullite aggregates in mullite-based refractory. And the cold mechanical strength and thermal shock resistance of these mullite-based samples, after firing at 1430°C for 3h, were investigated in the light of phase evolution and microstructure development. The results showed that the residual andalusite in the preheated andalusite aggregate played the role on the properties of fired samples. And the increased particle size of andalusite aggregate induced the improved thermal shock resistance and the deceased mechanical strength, due to the microcracking network resulting from the anisotropic characteristic of andalusite crystals. |
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