Key Benefits
- Flexibility with different alternative fuels
- High substitution rates with difficult alternative fuels (e.g whole tyres)
- Controlled emissions
- Guaranteed performance
- Best available technology for maintaining kiln availability with alternative fuels
Calciner fuel substitution
The HOTDISC™ is a safe, simple and effective combustion device – a large, moving hearth furnace – integrated with the preheater and calciner systems. It has proven to be the best available technology for substituting calciner fuel with coarse alternative fuels. The HOTDISC combustion device provides the flexibility to burn all kinds of solid waste in sizes up to 1.2 metres in diameter, from sludge or grains to huge whole truck tyres. This eliminates the need for expensive shredding of lumpy waste material.
Worldwide Success
Introduced in 2002, HOTDISCs are running successfully in plants worldwide. The benefits of using HOTDISC technology can vary from plant to plant and from country to country. Some plants are able to utilise alternative fuels that provide a high waste fee. Others with low labour costs find it possible to handle and transport a wide variety of fuel shapes and sizes. Still other plants choose to use highly calorific organic fuels to cut the costs of fossil fuels as much as possible.
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Continuous improvement
Since its introduction in 2002, FLSmidth has worked to continuously improve the HOTDISC design. As a result, the latest generation – the Mk3 HOTDISC – provides improved flexibility, better process control, increased capacity and greater durability. In addition, it is lower and therefore easier to install in new towers. There is rarely a need to add width or height to the preheater construction. The new, lower HOTDISC design also makes it easier to install as a retrofit in already existing plants.
Minimum maintenance
The HOTDISC features various platforms, manholes, doors and clean-out holes to facilitate fast, easy maintenance. Required maintenance is minimal, consisting only of an annual inspection and maintenance of the lining and a more thorough inspection of the entire HOTDISC every second year.
Guaranteed results
The HOTDISC is designed to achieve a calciner fuel substitution rate of up to 50%, although results can vary significantly depending upon specific plant conditions. FLSmidth specialists can accurately estimate and guarantee the exact performance results you can expect at your facility. We also offer immediate on-site assistance and guidance to help you get the very best out of your HOTDISC.