It is very common phenomenon that the air leakage of rotary kiln inlet dust collector in the cement industry, and the specific performance is the high run resistance, and the dust can not function properly. In order to ensure the safe operation of rotary kiln, the research and development center of ZK focus on solving the problem of air leakage of the rotary kiln inlet dust collector. After several experiments it found that the problems involving the top man hole, anti-blowing valve, ash unloading and ash back equipment, and rotary kiln shell.

Once there is a phenomenon that the rotary kiln air leakage, the main hazards are including: first, affecting the stability of the rotary kiln system; second, the equipment leakage ash; third, increasing the operating resistance; fourth, the device internal ring formation. It is mainly on account of combination dedusting of rotary kiln inlet and raw material vertical mill, and kiln inlet gas is adpoted cooling tower, ignoring the impact of air leakage. The content of Rotary kiln inlet gas moisture is 10%. Our company experts advise, it is noteworthy that the flue gas of the kiln inlet contains silica, and the body of silica content will be reduced after dedusting the rotary kiln shell. 

So, how to deal with rotary kiln air leakage? We can carry out prevention from the following points.

The first is to optimize the design and installation of rotary kiln. The improper installation of rotary kiln can easily cause the dislocation of the rotary kiln equipment, and forced installation of rotary kiln can easily cause part deformation and uneven weld phenomenon. Therefore, for rotary kiln design, in addition to consider the body has sufficient strength and stiffness, and it should also optimize the installation procedures to improve the installation quality of rotary kiln.

Followed by strengthening the dust seal system. For example, strengthen the sealing device of the rotary kiln manhole, anti-blowing valve, dust removal system and other parts.

Only in this way can solve the problems of rotary kiln inlet air leakage from the root.