News Date:2015-09-14
The seals connect the ends of the rotary kiln to the kiln hood and the kiln exhaust duct. They prevent leakage of cold air into the system at these points. Gases are moved through the kiln by the suction provided by a fan in the exhaust or in the preheater, so the efficiency of the fan relies upon minimal inleak at the back end seal. Furthermore, even if the fan is capable of handling a large amount of inleaking air, the dust control equipment and the preheater (if present) will be inefficient if they have to handle an excessive amount of gas. The front-end seal ensures that there is sufficient suction to draw the secondary air from the cooler into the kiln.
Both these seals have to deal with high temperatures, and so must be either of a simple heat-proof design, or must be kept cool by means of external fans. Both must also be capable of remaining air-tight as the kiln expands and contracts, and must cope with rotation of a kiln that may be slightly distorted.
| The vibration control of raw material vertical roller mill system | Reducer maintenance | Return column |
