Replacement Kiln Parts: Is It Time for New Rotary Drum Liners or Seals?

A properly made kiln can potentially stay in service for decades, but it won’t run flawlessly for all that time.  Individual parts wear out and some, you could say, were designed to fail.  Either way, periodically you will need replacement kiln parts to keep your kiln running properly.

Two of the components most commonly replaced are the rotary drum liner, as well as the drum seal.  Let’s take a look at when and why replacements are called for.

I. Rotary Drum Liners

The rotary drum liner is one of the single most important elements of a kiln since it helps trap and redirect the heat inwards.  If the liner is worn, torn, or otherwise ineffective, the immense heat within the kiln can damage the rotary drum itself – causing warping or even cracking.  In addition, the liner also protects the outer shell from direct impact damage from the debris within.

Unfortunately, it’s hard to predict when or how a drum liner will fail.  The longevity of your liner will depend entirely on the kiln’s usage.  Often, damage can be seen with a visual inspection.  Warping in the drum is another sign of serious problems.

Be aware, replacing the rotary drum liner will require a complete shutdown of the kiln.  On the plus side, this is an excellent opportunity to do any other maintenance or install other replacement kiln parts as needed.

II. Rotary Drum Seals

Rotary drum seals go between the rotating drum and the stationary sections, preventing heat leakage.  As the seals break down, it becomes more difficult to maintain proper heat profiles within the kiln.  It could also lead to damage to the exterior components if enough superheated air is escaping.

If the seal is failing, it can often be seen visually.  You may also see material back spill when adding materials to the kiln or hear unusual noises as the drum turns.  

Seals will periodically fail, but not too often.  If you find yourself needing replacement seals often, that could indicate other problems – such as a misaligned or off-balance rotary drum, putting uneven pressure on the seal.  This would be a reason to call in kiln repair specialists to evaluate the kiln.

Kiln Technology Company Company

If you’re ever in need of replacement kiln parts, the Kiln Technology Company Company has one of the largest stocks of spares in the United States.  No matter the age or type of kiln you have, contact us to discuss your needs.