Why is necessary?

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Current massive mining methods applied at some Southeastern European coalfields result in large amounts of interlayer waste from complex coal seams being sent to power plant boilers for combustion.

This waste is unnecessary load on boilers and represents the single most significant cause for failure of power plant boilers to achieve their nominal capacities.

Industrial implementation of the coal cleaning to this type of coals will enable cost-effective and environmentally safe use and reliable supply of lignite for power production.

Borovac process is based on the following facts:

  • significant differences in physical characteristics between the clean coal and waste matter
  • xhilite structure of some lignites prevents excessive coal comminution during the treatment
  • waste matter in coal is mainly in forms of clay and sand