Main factors affecting the service life of the refractory bricks

According to the long-term use of refractory bricks and refractory brick life mainly includes the influence of the specific use of the environment, the operating temperature of refractory brick
kiln, the use of the number of fly ash erosion. The principle of damage of refractory brick includes three aspects, the solubility, permeability, cinder of refractory brick erosion, friction. These three processes and ultimately affect the service life of the refractory brick, firebrick damage caused by.

Slag brick permeability leads to uneven texture, when encountered high temperature refractory bricks, due to uneven texture, resulting in heat coefficient is not the same, cracking caused by refractory brick. According to the summary of practical application, start and stop times increase the erosion of furnace firebrick, so the reasonable control of furnace of the open stop times can prolong the service life of refractory bricks.

Effect of fly ash on properties of  refractory brick is relatively large, very permeable brick composition of fly ash is silica, a relatively high calcium oxide, if these two components in coal ash, so the erosion of refractory brick is very large, a reasonable construction of the two components can reduce the erosion of refractory bricks to improve refractory brick service life.