The application of white corundum abrasive in refractory bricks is mainly reflected in the following aspects, which can significantly improve the performance of refractory bricks:

I. Improving fire resistance

The main component of white corundum is alumina (Al₂O₃), which has high melting point (about 2000°C) and good high temperature resistance. Adding white corundum to refractory bricks can significantly improve the refractoriness of refractory bricks and make them stable for a long time in high temperature environment.

II. Enhancing wear resistance and hardness

White corundum has high hardness (Mohs hardness is 9) and good wear resistance. Adding white corundum abrasive into refractory bricks can significantly improve the wear resistance of refractory bricks and make them not easy to wear under high temperature and mechanical impact. At the same time, the high hardness of white corundum can also enhance the corrosion resistance of refractory bricks.

III. Improving thermal shock resistance

White corundum has low thermal expansion coefficient and good thermal shock resistance. Adding white corundum to refractory bricks can improve the thermal shock resistance of refractory bricks and make them not easy to crack or peel off in the environment of rapid temperature change.

IV. Improving corrosion resistance

White corundum has high corrosion resistance to corrosive substances such as acid and alkali. Adding white corundum to refractory bricks can significantly improve the chemical corrosion resistance of refractory bricks and make them run stably in corrosive environment for a long time.

V. Optimizing the microstructure

The addition of white corundum abrasive can optimize the microstructure of refractory bricks. For example, white corundum particles can fill the pores in the refractory matrix and improve the compactness of the material. In addition, the combination of white corundum with other refractory materials (such as mullite, high alumina, etc.) can form a more stable composite structure and further improve the performance of refractory bricks.

VI. Improving sintering performance

The addition of white corundum abrasive can improve the sintering properties of refractory bricks. Its high purity and fine particles can promote the sintering process and improve the sintering density and strength of refractory bricks. At the same time, the addition of white corundum can also reduce the porosity during sintering and further improve the compactness and strength of refractory bricks.

VII. Strengthening creep resistance

Refractory bricks are prone to creep deformation in high temperature environment. The addition of white corundum can improve the creep resistance of refractory brick and keep its stable shape at high temperature.

VIII. Improving service life

Based on the above performance improvement, the addition of white corundum abrasive can significantly improve the service life of refractory bricks. The stability of refractory bricks in harsh environments such as high temperature, wear and chemical erosion is enhanced, the replacement frequency is reduced, and the maintenance cost is reduced.

Through the above methods, the application of white corundum abrasive in refractory bricks not only improves the comprehensive performance of refractory bricks, but also meets the high requirements of high-temperature industries for refractory materials, making it widely used in steel, glass, ceramics and other industries.