Refractory bricks are special types of bricks that are designed to withstand high temperatures and harsh environments. They are used in industries such as steelmaking, glassmaking, and cement production, where high temperatures are required for manufacturing processes. The following are the reasons why refractory bricks resist high temperatures:

Heat Resistance:
Refractory bricks are made from materials that have high melting points, such as alumina, silica, and magnesia. These materials can withstand temperatures ranging from 1,200°C to 1,800°C without melting or degrading. This makes them suitable for use in furnaces, kilns, and other high-temperature applications.

Thermal Shock Resistance:
Refractory bricks are also designed to resist thermal shock, which occurs when a material is rapidly heated or cooled. Thermal shock can cause the material to crack or break, which can be dangerous in high-temperature applications. Refractory bricks are made from materials that can expand and contract without cracking, making them resistant to thermal shock.

Chemical Resistance:
Refractory bricks are also resistant to chemical corrosion, which can occur when materials are exposed to acids, alkalis, or other corrosive substances. They are made from materials that are chemically stable, such as alumina, silica, and magnesia. This makes them suitable for use in industries where corrosive substances are present, such as chemical processing and metallurgy.

In conclusion, refractory bricks are designed to resist high temperatures, thermal shock, and chemical corrosion. They are made from materials that have high melting points and are chemically stable, making them suitable for use in industries such as steelmaking, glassmaking, and cement production.