Precautions for the construction of refractory materials
Thread Content
An additional layer of refractory cement (aluminate) is applied in front of the refractory bricks in the furnace. I would like to ask what precautions should be taken during the application of this refractory cement, and how can the effects of thermal expansion be mitigated?
Controlling the amount of water added during the construction of refractory castables is very important for their performance; typically, the expansion gaps are compensated for by the compression of the mortar in the brick joints and the voids. However, in large furnaces operating at high temperatures over extended periods, relying solely on the compression of grout joints to compensate for thermal expansion is insufficient; appropriate expansion joints must be provided as a precaution. Usually, when designing the furnace lining structure, the design team takes compensation into account based on calculations.