How Many Degrees Can The Fire Resistance of Insulating Brick Reach

Insulating brick's fire resistance varies with different material types and manufacturing processes. The following are the fire resistance ranges of several common insulating brick:

1. Light clay insulating brick: The fire resistance is generally between 1200℃ and 1400℃.

2. Lightweight refractory brick with high aluminum insulation: the fire resistance can reach about 1350℃.

3. Lightweight mullite insulating brick: It has high refractoriness, can directly contact with flame, and its service temperature can reach 1350℃-1500℃.

4. Lightweight alumina insulating brick: The refractoriness is relatively high, the service temperature is 1350℃-1500℃, and the service temperature of high-purity products can reach 1650℃-1800℃.

5. Lightweight silica insulating brick: High fire resistance, and the service temperature can reach 1550℃-1600℃.

It should be noted that the main function of insulating brick is thermal insulation. Although its fire resistance is high, it is usually lower than that of ordinary refractory bricks. In practical application, insulating brick is mostly used as the insulation layer of furnaces and kilns, and does not directly contact with high-temperature flame or slag.