White corundum has obvious advantages in refractories, mainly in the following aspects:

I. High temperature stability

The melting point of white corundum is as high as 2050°C, which can keep the physical and chemical properties stable for a long time in high temperature environment and is not easy to melt or deform. This characteristic makes it an ideal refractory for manufacturing high-temperature furnaces, smelting furnaces and other high-temperature industrial equipment.

II. Corrosion resistance

White corundum is highly resistant to corrosive substances such as acid, alkali, oxidant and reducing agent, and can run stably for a long time in a chemically corrosive environment. This excellent corrosion resistance makes it widely used in chemical reaction furnaces, storage tanks and other occasions that need to withstand chemical corrosion.

III. High hardness and wear resistance

White corundum has high hardness and wear resistance, can withstand the impact and wear of high-speed fluids or particles, and maintain the surface smoothness and flatness for a long time. This characteristic makes it have obvious advantages in the environment that needs to bear mechanical wear, such as the lining of high temperature reaction furnace.

IV. Influence of high purity and low impurities

The purity of white corundum is high (usually ≥99%), which reduces the influence of impurities on the properties of refractories. High purity white corundum can provide more stable chemical properties and longer service life.

V. Improving the performance of refractories

Adding proper amount of white corundum to refractory can effectively improve the density and high temperature resistance of castable and reduce the linear change rate. White corundum can also form mullite with micro-silicon powder, which improves the high temperature strength of castable.

VI. Good construction performance

White corundum refractories usually have good construction performance, and can be constructed by pouring and spraying. The construction process is simple and fast, which is conducive to reducing construction costs and improving construction efficiency.

VII. Wide range of applications

White corundum refractories are widely used in steel, casting, cement, glass and other industries, and can be used to manufacture refractory components such as blast furnace, converter, electric furnace, crucible, furnace lining, furnace top and furnace door. In addition, white corundum can also be used to make refractory coatings, refractory castables, refractory mortar and so on.

VIII. Excellent physical properties

White corundum has high toughness and impact resistance, is not easy to crack and crack, and can withstand impact and vibration. This is helpful to improve the stability and durability of the whole material, especially in the occasion of bearing mechanical stress.

To sum up, white corundum has obvious advantages in refractories because of its high temperature stability, corrosion resistance, high hardness, high purity and excellent physical properties, and can meet the application requirements in various high temperature and corrosive environments.