The height of the refractory brick determines the thickness of the kiln lining. On the one hand, the thickness of the kiln lining determines the weight of the kiln lining, affects the deformation of the kiln body and the mechanical stress on the lining fire brick. On the other hand, the thickness of the kiln lining affects the kiln body. The surface temperature and heat loss determine the thickness of the refractory material that can be eroded. If the kiln lining is too thick, the cylinder body is deformed greatly, and the refractory brick is subjected to large mechanical stress and the life may be lowered.
If the kiln lining is too thin, the refractory brick will be slightly damaged, and the temperature of the kiln will exceed the upper limit, that is, the refractory brick should be replaced. Therefore, too thin or too thick kiln lining is not conducive to improving life.
Lining Fire Brick Height
| Lining Brick Category | Cement kiln lining height | ||
| 3000~3600 | 3600~4200 | 4200~5200 | |
| Alkaline brick | 180~200 | 200~220 | 220~230 |
| High alumina brick | 150~180 | 180~200 | 200~220 |
| Alkali resistant brick | 150~180 | 180~200 | 180~200 |
Generally, the basic refractory brick design is 7~8Kg, and the clay and high aluminum bricks are 10Kg, which is convenient for manufacturing and masonry. With the VDZ or ISO type, only one refractory brick with a small radius of curvature and a large radius of curvature can be used to dispense fire bricks with any kiln diameter.
That is to say, only a few bricks can be used to configure bricks with different kiln diameters, thus expanding the versatility of the products, which is conducive to reducing inventory and reducing production costs.