The main differences between mullite insulation bricks and refractory bricks are as follows:
1.Insulation performance: The thermal conductivity of insulation bricks is generally between 0.2-0.4 (average temperature 350 ± 25 ℃) w/m.k, while the thermal conductivity of refractory bricks is above 1.0 (average temperature 350 ± 25 ℃) w/m.k. It can be concluded that the insulation performance of insulation bricks is much better than that of refractory bricks.
2. Fire resistance: The fire resistance of mullite insulation fire bricks is generally below 1400 degrees, while the fire resistance of refractory bricks is above 1400 degrees.
3. Density: Mullite insulation fire bricks are generally lightweight insulation materials, with a density generally between 0.8 and 1.0g/cm3, while refractory bricks have a density generally above 2.0g/cm3. In general, the refractory brick has high mechanical strength, long service life, good chemical stability, no chemical reaction with materials and good high-temperature resistance. Its maximum heat resistance temperature can reach 1900 ℃. It is suitable for high and low temperature shift furnaces, reformers, hydrogenation converters, desulfurization tanks, and methanation furnaces in fertilizer plants, it plays a role in dispersing gas and liquid, supporting, covering, and protecting catalysts. It can also be used in hot blast furnaces and heating transformation equipment in the steel industry.
Refractory bricks have the advantages of high density, high strength, good wear resistance, good corrosion resistance, low coefficient of thermal expansion, high grinding efficiency,good noise reduction, long service life, non polluting materials, etc. It is a high-quality grinding medium suitable for various grinding machines.
The difference between refractory bricks and mullite insulation fire bricks are significant, as their application environment, scope, and function are all different. Different materials will be used in different conditions. When selecting materials, we need to decide which refractory material is suitable for our own use based on our actual situation.
Post time: May-10-2023
