Keep false air out, hot gas in with our innovative Graphite Kiln Seal
This innovative Graphite Rotary Kiln Sealing System can make any existing kiln more efficient by optimising pressure stability and reducing the release of hot gasses and dust particles. Its modular frame allows for pre-assembly, which means fast, easy installation with minimal downtime.
Innovative, efficient graphite rotary kiln seal that’s easy to install
Increase your energy efficiency with our innovative graphite seal that works on any kiln – any size, any manufacturer. We deliver a module that is designed to integrate with your existing casing and cooling mantle with no modification required
Module pre-assembled in the workshop
Much of the Kiln Graphite Seal Module is pre-assembled in our workshop, which means easy installation and less downtime for you. It also allows us to deliver top quality, ensuring the straightness of the flanges.
Our modular frame includes locking plates, distance spacers and guide blocks. Together, they guide and secure the position of the graphite blocks to maintain a tight rotary kiln seal.
Staggered arrangement with two rows of blocks
Unlike other block seals on the market, our Carbon Graphite Kiln Seal uses a staggered arrangement with two rows of graphite blocks held in place by a wire rope system. That means you’ll get a strong and effective seal against the outer air casing.
Our design lets the graphite blocks move independently with the radial movement of the kiln without getting damaged or stuck. And locking plates installed on the rear flange keep false air from entering the rotary kiln system.
Optional shovel arrangement
If you choose, the Graphite Kiln Seal can be delivered with a heat-resistant shovel arrangement. This will collect any back spillage and return it to the kiln.
How does it work? The casing, hopping, and ducting act as a material buffer. They guide the excess raw meal to a bin, or to a conveyer system. Meanwhile, the hopper comes with a sloping plate that helps stop dust build-up on the graphite kiln seal.
And a slide plate installed at the bottom of the hopper delivers accumulated material to disposal, or to the conveying system if you prefer.
Retrofitting rotary kiln seals
Our Kiln Graphite Seal works on any rotary kiln, not just the kilns we manufacture ourselves. We’ll also work with you to adjust any existing equipment, such as kiln shells, fans and hoppers in order to keep installation cost to a minimum.
The typical installation takes about 7 to 10 days.
Easy, predictable maintenance
A quick visual inspection will let you know if maintenance is required. You can even change the graphite seal blocks without cooling down the kiln completely.
And you won’t need many spare parts, since the graphite blocks and wire ropes are interchangeable between the inlet and outlet sets.
The graphite blocks are self-lubricating, so there is less wear and tear. In fact, the expected wear on the blocks is 5-8mm per year, which means a good long lifetime.
Fast, easy installation of an efficient graphite seal to fit any kiln
01
Cut down on energy consumption
By optimising your kiln performance and keeping out false air, the Graphite Kiln Seal will reduce ID fan consumption by optimising the operation pressure stability.
02
Low maintenance, no full cooling required
Just a visual inspection will show if it’s time for maintenance, and you don’t need to entirely cool down the kiln to allow for easy replacement of the graphite blocks.
03
Quick installation with pre-made modules
The Graphite Kiln Seal works on any rotary kiln, not just ones manufactured by us. And because we pre-build most of the module in our workshop, installation is quick with limited downtime.
Our kiln seals use carbon graphite in staggered blocks held by wire rope
Two types of Kiln Graphite Seals are available; both are designed to maintain optimal kiln operating conditions and minimise energy loss. The Kiln Inlet Seal provides an interface between the kiln and preheater, while the Kiln Outlet Seal creates an interface between the kiln and the cooler.
Efficient seal against the outer air casing
Both of these highly efficient kiln seals use carbon graphite to create a staggered arrangement of overlapping blocks, held in place by a wire rope system. This creates an efficient seal against the outer air casing.
The graphite blocks move independently with the radial movement of the kiln. Locking plates on the rear flange is one of our key design features. They keep false air from entering the kiln system.
Our modular frame includes locking plates, distance spacers and guide blocks. Together, they guide and secure the position of the graphite blocks to maintain a tight rotary kiln seal.
An inlet seal casing handles back spillage. It directs it to the hopper so it can be collected and disposed of.
Pre-assemble modules for installation
We pre-assemble each module before installation, and we thoroughly inspect the geometrical tolerances of the flanges in our workshop. That helps us ensure the highest quality standards.
When it comes to maintenance, the wire rope system and modular frame allow quick replacement of the graphite blocks. Special distanced spacers mean there is no need to dismount the flanges.
Meanwhile, the wire rope system includes counterweights and independent rope systems that cover each row of graphite blocks.
The ropes grip the graphite blocks tightly in place, but they also allow for movement caused by kiln runout, ovality, and expansion.
Our design allows for radial movement of +/- 50mm and axial movement of about 300-400mm.
Each wire rope is designed to run for a full production campaign, but we have also designed an extra preventative measure. The seal’s locking system will hold the graphite blocks in place in the unlikely event of a wire failure.
