What is the reason for the distortion of refractory bricks in cement kiln

Cement kiln is one of the important equipment for producing cement, and its interior needs to be lined with a large number of refractory bricks. During the normal operation of a cement kiln, kiln brick distortion is a common problem due to factors such as high temperature, chemical corrosion and mechanical impact.

一. The main reasons for the distortion of cement kiln bricks:

1. Uneven layering of materials in the kiln: During the operation of the cement kiln, uneven layering of materials will cause uneven distribution of temperature and pressure on the kiln bricks, resulting in distortion and deformation of some kiln bricks.

2. Unreasonable kiln body structure design: Improper kiln body structure design may also cause kiln bricks to be distorted and deformed. For example, factors such as excessive spacing between parallel plates in the kiln body and unreasonable support methods may cause kiln bricks to twist.

3. Kiln brick material and quality: The material and production process of cement kiln bricks have a great influence on the performance of kiln bricks. If the shrinkage rate of the finished brick is too large, the brick body is brittle or the bending yield strength is insufficient, etc., it will cause the kiln brick to be distorted and deformed.

4. The temperature gradient is too large: the temperature range in the cement kiln is large, resulting in a large difference in the degree of temperature influence of the kiln bricks in different parts, which causes the distortion of the kiln bricks. Especially after the kiln bricks are sprayed with cooling water, the temperature drops suddenly and the temperature gradient is extremely large, which will cause the kiln bricks to be distorted and deformed.

二. To avoid the distortion and deformation of cement kiln bricks, take the following measures:

1. Optimize the structure design of the kiln body, so that the materials in the kiln are evenly distributed, reduce the temperature gradient, and reduce the possibility of kiln brick distortion and deformation.

2. Strengthen the production process and quality control of kiln bricks to ensure stable and reliable brick quality, and reduce the shrinkage rate and brittleness of bricks as much as possible.

3. Regularly check the use of kiln bricks, and replace damaged kiln bricks in time to prevent distortion and deterioration of kiln bricks.

To sum up, there are many reasons for the distortion and deformation of cement kiln bricks. In addition to dealing with specific problems, it is also necessary to strengthen preventive measures to ensure the normal service life and work efficiency of kiln bricks.

Zhengzhou Zhenjin Refractory Co., Ltd. provides low-cost and high-performance refractory bricks for cement kilns, including magnesia-alumina bricks, magnesia-iron bricks, and magnesia chrome bricks. High-alumina bricks, silica bricks, composite structure silica bricks, high-strength alkali-resistant bricks and other cement kiln refractory products.