Can Refractory Bricks Be Fired With Clay?

Can refractory bricks be fired with clay? The answer is no. As a common refractory material, refractory bricks have excellent heat resistance and chemical stability in high-temperature environments. They are widely used in the internal construction of furnaces, chimneys, heat treatment furnaces, and other equipment, so the raw materials of refractory bricks need to have fire resistance and chemical stability in high-temperature environments.

The raw materials for making refractory bricks are mainly bauxite, which usually contains aluminates, silicates, alumina, etc., so it can withstand high temperatures. There are obvious differences in the material properties of clay and bauxite. Clay is mainly composed of clay minerals, its structure is loose, easy to deform, and has poor fire resistance in high-temperature environments. Therefore, replacing refractory bricks with clay may cause the risk of deformation and collapse of building structures when subjected to high temperatures.

The refractory temperature of general soil is 800-1000℃, while the working temperature of high-temperature industrial kilns can usually reach above 1300℃, so it is difficult for ordinary soil to meet the high-temperature requirements of high-temperature industrial kilns, and the soil can withstand a short time in a high-temperature environment, which cannot meet the long-term operation of high-temperature kilns in a high-temperature environment, so soil cannot be used as a raw material for refractory bricks.

Not only that, the manufacture and selection of refractory bricks have undergone strict production and screening to ensure their quality and stability. In contrast, the quality of soil has greater uncertainty and is greatly affected by factors such as raw materials and construction technology. Therefore, replacing refractory bricks with soil may affect the strength and stability of the building structure, and there are certain safety hazards.

There are obvious differences between soil and refractory materials such as bauxite in physical and chemical indicators such as creep, compressive strength, and refractoriness, so it cannot be used in the production of refractory bricks. Therefore, special refractory materials must be selected in the production process of refractory bricks to ensure the stability of high-temperature kilns.