Bottom Ash Treatment

Incinerator Bottom Ash is the ash that is left over after waste is burnt in an incinerator. Since a wide range of municipal wastes are burned in the energy from waste plants, the leftover ash is not all powdery but contains glass, brick, rubble, sand, grit, metal, stone, concrete, ceramics and combusted products such as ash and slag.

In order to avoid landfill disposal and recover the most of the valuable material, Machinex use a sorting process that may include vibratory screens, rotating trommels, magnet, eddy current separators, in order to remove large objects, stones, bricks and metals (iron and non-ferrous metals such as aluminum, copper and brass). Those left overs can therefore be recycled in a number of construction applications to replace primary aggregates extracted from quarries.

Highlights & Benefits
  • Avoid landfill disposal of the leftover ash
  • Recover stones, bricks and metals for resale