What is the Basis for Choosing Refractory Bricks?

The basis for choosing refractory bricks mainly includes the following aspects:

Thermal properties: Thermal properties are one of the important properties of refractory bricks, including thermal expansion coefficient, thermal conductivity, specific heat capacity, thermal shock resistance, etc. Different refractory bricks show different thermal properties at different temperatures, so it is necessary to choose the appropriate refractory brick according to the specific use conditions.

Chemical stability: Refractory bricks need to withstand high temperatures and various chemical corrosion, so chemical stability is an important factor in choosing refractory bricks. Different chemical environments have different corrosive effects on refractory bricks. For example, alkaline environments have a greater corrosive effect on silicate ceramics, while acidic environments have a greater corrosive effect on silicon carbide. Therefore, it is necessary to select the appropriate refractory brick according to the specific use environment.

Physical and mechanical properties: The physical and mechanical properties include the compressive strength, flexural strength, and wear resistance of refractory bricks. Different physical and mechanical properties directly affect the service life and use effect of refractory bricks, so it is necessary to choose refractory bricks with better physical and mechanical properties.

Cost and use effect: The cost of refractory bricks is also one of the important considerations in the selection. It is necessary to choose relatively low-cost refractory bricks without affecting the use effect.

To sum up, the basis for selecting refractory bricks needs to comprehensively consider factors such as thermal performance, chemical stability, physical and mechanical properties, cost and use effect, and choose according to specific use conditions.