With the growing demand for high-temperature materials in the industrial field, mullite refractory materials have attracted widespread attention due to their excellent performance in high-temperature environments. These materials are becoming the first choice for industries such as steel, cement, and glass due to their excellent high-temperature performance, excellent thermal stability, and outstanding corrosion resistance. First of all, we need to understand the chemical composition of mullite refractory materials. Its main components are aluminum oxide (Al2O3) and silicon dioxide (SiO2). Its unique crystal structure makes it stable in high temperature environments. According to data, the maximum operating temperature of this material can reach 1800℃, which is much higher than traditional refractory materials. Secondly, the physical properties of mullite refractory materials are also a major reason for their popularity. They have high strength, low expansion and good thermal conductivity, can remain stable under extreme temperature changes, and are not prone to deformation and cracking. For example, in the application of rotary kiln lining in cement plants, its service life can be extended by 30% compared with ordinary refractory bricks. In terms of industrial applications, mullite refractory materials have practical cases in industries such as steel, cement and glass. For example, in the lining of blast furnaces in the steel industry, it can significantly increase the service life of the furnace and reduce downtime. In glass melting furnaces, it can effectively resist the chemical erosion of molten glass and ensure the continuity and stability of the production process. In order to improve its service life and performance under different working conditions, enterprises can make improvements through optimized design. For example, by adjusting the formula of mullite refractory materials, its thermal shock resistance and erosion resistance can be further enhanced to better meet the needs of high-temperature industries. In summary, mullite refractory materials will occupy an important position in the future high-temperature industrial materials market due to their superior performance and wide application prospects. It is hoped that through the discussion in this article, it can provide valuable references for various industries in selecting materials, help enterprises improve production efficiency and reduce operating costs.