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Enhancement on Properties of MgO-MgAlON Composite Refractories by Introducing Solid Waste Containing BN and AlN

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Enhancement on Properties of MgO-MgAlON Composite Refractories by Introducing Solid Waste Containing BN and AlN

Zhangyan Zhou 1 Lulu Wang 1,2,3 Chunming Liu 2 Chang Su 4 Huawei Yin 5 Chuanbo Hu 5 Yongxin Wang 1 Shuli Sun 6 Xinming Ren 6 Guangming Li 7 Chengcheng Zhang 7 Yongli Liu 8 Chengji Deng 9 Beiyue Ma 1,9,* Chao Yu 9,*

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1
Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, China
2
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
3
College of Electrical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 464200, China
4
School of Metallurgy and Power Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
5
Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, School of Environmental and Chemical Engineering, Chongqing Sanxia University of Science and Technology, Chongqing 404100, China
6
Inner Mongolia Metal Material Research Institute, Yantai 264003, China
7
Dashiqiao Meir Magnesium Products Co., Ltd., Yingkou 115199, China
8
Liaoning Sidate Magnesium Industry Co., Ltd., Fushun 113122, China
9
State Key Laboratory of Advanced Refractories, Wuhan University of Science and Technology, Wuhan 430081, China
*
Authors to whom correspondence should be addressed.

Received: 01 July 2026 Revised: 17 July 2026 Accepted: 24 July 2026 Published: 06 August 2026

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© 2026 The authors. This is an open access article under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/).

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High-Temp. Mater. 2026, 3(3), 10016; DOI: 10.70322/htm.2026.10016
ABSTRACT: Driven by the goals of carbon peaking and carbon neutrality, the resource utilization of solid waste has attracted considerable attention due to its scientific importance and environmental benefits. For this purpose, MgO-MgAlON-BN refractories with enhanced thermal shock and slag resistance were designed and successfully fabricated by introducing BN solid waste as an additive. The results indicate that the sample containing BN additives exhibits superior overall performance compared with those without additives. At a BN content of 3.26 wt.%, the cold compressive strength increases by 21.20%, and the contact angle at 1723 K increases by 50.01%. Further analysis reveals that the improved wetting behavior is mainly attributed to the introduction of BN additives, which promote the formation of numerous micro-convex structures. These structural characteristics restrict slag infiltration and inhibit slag penetration into the refractory matrix, thereby enhancing slag resistance. Consequently, a cost-effective and feasible reinforcement strategy for MgO-MgAlON-BN refractories is proposed, providing a promising pathway for the high-value utilization of solid waste resources.
Keywords: MgO-MgAlON-BN composite refractories; Solid waste; Apparent porosity; Strength; Slag resistance
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