A man standing beside a big cooled chain conveyor.

Cooling chain conveyors

Cooled Chain Conveyor is used for cooling and conveying of hot ash, such as bottom and fly ash. This conveyor is typically placed directly below a boiler for rapid cooling. The conveyor utilizes cooling vessels in both, the intermediate bottom, and the bottom. Ash cooler equipment are widely used in combustion-based boilers.


Laitex’s Cooled Chain Conveyors are designed for plant’s extreme conditions. Through a comprehensive development work, our products achieve a high cooling capacity and thus extend the life of other material handling equipment as well.

Laitex's cooling chain conveyors

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Characteristic Benefits

  • Cooling while conveying
  • Best cooling conveyor solution for long distances
  • Energy-efficient in conveying bulk material
  • Modular design
  • Possibility for several feed and extraction points
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Bulk materials

  • Bottom Ash
  • Fly Ash
  • Sand
  • Reburned lime
  • Other materials as requested

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Specifications for typical applications
InclinationNormal ash conveyor max. 28° special conveyor up to 60°
Width 400 – 1400 mm
LengthUp to approx. 60m
Construction details
Construction materialsCarbon-, stainless-, wear resistant-, high temperature or heat resistant steels. Other materials on request.
Conveying elementSingle or dual chain. (According to norm DIN 8167). Application specific scraper design.
Drive unitGear motor. Open chain transmission with shear pin or direct drive.
ComponentsService hatches for inspection and conveying element service. Chain tension adjusting device. Standard pillow block bearing housings with radial roller bearings. Stuffing boxes for shaft sealing (Optionally boxes with air input). Sensors for rotation and blockage.
SafetyGuards and protective devices according to SFS-EN 618
Other options are available on request
CE-Marking
All Laitex equipment conform to Machinery Directive 2006/42/EC, and are therefore acceptable for CE-marking.

Related solutions

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Bottom ash handling refers to the process of removing and processing ash, slag, sand, and non-combustible particles from the bottom of a boiler to containers or a bunker. Our well-planned solutions increase efficiency and production capabilities of the plant's operations.
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The growing international demand for activated carbon drives the need for activated carbon plants. Laitex has designed equipment suitable for conveying and handling activated carbon efficiently.
Blue ash conveyors for recovery boiler.

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The black liquor burned in the recovery boiler produces chemicals for white liquor, and steam. Laitex's ESP equipment and ash conveying solutions focus on the efficient handling, conveying, and recycling of ash and chemicals produced in a recovery boiler.

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