In large-scale machinery and equipment, the rotary kiln shell is used as the support and rotating part of the equipment. During the operation of the rotary kiln, under the high temperature state for a long time, the rotary kiln mouth is often burned and deformed. In severe cases, the rotary kiln shell needs to be replaced. If the new shell is not replaced in time, it will seriously affect the operation of the equipment.

Reasons for the deformation of the rotary kiln shell:

1. If the output is too large, the wear of the rotary kiln barrel material will increase, which will easily cause the overheating deformation of the rotary kiln barrel.

2. The heat flow is too large, the cooling zone is very short or even no, the working environment of the rotary kiln is bad, the temperature of the clinker out of the kiln is 1300-1400℃, and the temperature of the secondary air is 1000-2000℃

3. The temperature of the rotating cylinder is too high, the thermal expansion is large, and the strength of the high temperature resistant material is seriously attenuated

4. The loose bolts of the guard plate at the mouth of the rotary kiln cause the refractory material to fall off, thereby burning the cylinder.

5. Burning polluted soil, improper treatment will cause serious corrosion to the rotary kiln shell, and in serious cases, the rotary kiln will collapse.

6. The corrosion of the rotary kiln shell by sulfur, phosphorus and chlorine will not only reduce the strength of the rotary kiln shell, but also reduce the shaping of the steel and increase the brittleness of the steel, which may lead to the brittleness of the rotary kiln shell. destroy.

From this, it can be concluded that it is very necessary to regularly detect the operation status of equipment components, find problems and deal with them in time and replace them. While improving the economic benefits of the enterprise, it can also effectively extend the service life of the equipment!