Effect of Different Light-burned Temperatures on Sintering Properties of Active Magnesium Aluminate Spinel

doi:10.19691/j.cnki.1004-4493.2025.02.005

China's Refractories ›› 2025, Vol. 34 ›› Issue (2): 23-28.DOI: 10.19691/j.cnki.1004-4493.2025.02.005

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Effect of Different Light-burned Temperatures on Sintering Properties of Active Magnesium Aluminate Spinel

QUAN Zhenghuang¹, WANG Zhoufu^1,*, LIU Hao¹, MA Yan¹, CHENG Changgui¹, WANG Liwang²

1 State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology,Wuhan 430081, China;
2 Zhejiang Jincheng New Material Co., Ltd., Huzhou 313000, China

Online:2025-06-15 Published:2025-06-16
Contact: *e-mail: whwangzf@163.com
About author:Quan Zhenghuang received his doctor's degree from Wuhan University of Science and Technology. He is a postdoctoral fellow at Wuhan University of Science and Technology currently. He has been engaged in the design and analysis of ceramic matrix composites and the service behavior research of new refractory materials for a long time, has won the third prize of the 16^th National Refractory Youth Academic Report, the Excellent Award of the Houzhi Foundation, the first prize of Beijing Lier Scholarship of Wuhan University of Science and Technology, along with a series of academic awards in the refractory industry. He has participated in several research projects funded by the National Natural Science Foundation of China, and has published more than 10 high-level academic papers in international journals as the first author.

Abstract

Abstract: In order to prepare high density magnesium aluminate spinel materials, the light-burned magnesia and alumina powder were used as the main raw materials. Active magnesium aluminate spinel powders were synthesized at different temperatures, and the sintering properties of the synthesized materials were characterized. The results show that the optimal light-burned temperature for synthesizing active magnesium aluminate spinel raw materials with small grain sizes and high sintering activity is 1 400 °C. The active spinel raw materials were sintered at 1 750 °C for 3 h to form a dense spinel material, in which the spinel grains were well developed, exhibited a dense interlocking structure, and were uniformly distributed, with an average grain size of about 7.26 μm. The bulk density and apparent porosity of the dense spinel material were 3.29 g · cm^-3 and 3.5%, respectively.

Key words: light-burned temperature, active magnesium aluminate spinel powder, sintering properties

QUAN Zhenghuang, WANG Zhoufu, LIU Hao, MA Yan, CHENG Changgui, WANG Liwang. Effect of Different Light-burned Temperatures on Sintering Properties of Active Magnesium Aluminate Spinel[J]. China's Refractories, 2025, 34(2): 23-28.

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Effect of Different Light-burned Temperatures on Sintering Properties of Active Magnesium Aluminate Spinel

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