1) Thermal insulation performance
The thermal conductivity of lightweight 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. Therefore, 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 lightweight insulation bricks is generally below 1400 degrees, while the fire resistance of refractory bricks is above 1400 degrees.
3) Density
Lightweight insulation bricks are generally lightweight insulation materials, with a density generally between 0.8-1.0g/cm3, while the density of refractory bricks is generally above 2.0g/cm3.
4) Lightweight insulation bricks generally do not directly come into contact with flames, high-temperature molten materials, and chemical gas erosion. Refractory bricks can be used to withstand direct flame roasting and various erosion of high-temperature molten materials in kilns according to different materials and physical and chemical properties.
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