Case Study - Sustainable waste management at Sweden's largest waste incineration plant


Högbytorp, Sweden

Completion and commissioning


Bulk material

ash, slag

The circular economy process is successfully used in Sweden's largest waste-to-energy plant since several years. The WtE facility generates electricity, heating power and biogas for the metropolis of Stockholm from incinerated municipal and industrial waste. Instead of a wet deslagging process, a dry deslagging system from Loibl was installed, which was convincing due to its customized, technically sophisticated design and robust construction.

  • LASHSCREWCON® - Screw conveyor
  • LASHCHAINCON® - Trough chain conveyor
  • Manual and pneumatic slide gate valves
  • Various chutes
  • Rotary feeders with crushing function
  • Docking device
  • Container with accessories
  • Loading device for silo vehicles
  • Ash silo

Wet or dry slag conveying - Where are the advantages?

With both processes, the majority of the slag residues produced are recycled to recover valuable metallic residues.

With wet slag conveying, hot slag and remaining embers from the boiler are fed to a water bath in which they cool down rapidly. Depending on the application, Loibl uses patented product solutions for this process, including highly efficient pan conveyors, chain conveyors, wet slag conveyors as well as slag pushers. While wet slag conveying is proven, the recovery rate of metallic residues is lower than with dry slag conveying.

With dry slag conveying, cooling is done with air instead of water. Loibl's LASHDRYPRON® efficiently separates fine and coarse ash, which increases the recovery rate of FE and NF metals.

Frank Dietrich

Sales Engineer

Tel. +49 9421 / 9256-917
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