The dryer is made in a 3-way drum concept, in which the material is dried by a dry flue gas stream from the combustion plant.
The primary separation of the coarse fraction occurs in the cyclone.
Secondary separation is dependent on the requirements of the particulate concentration emission limits.
An alternative to drum dryers are belt dryers made by the Czech manufacturer KATRES.
Boilers with industrial combustion system from the Czech manufacturer ZDENĚK FIEDLER with fully hydraulic fuel filling achieve very low NOx gaseous emissions thanks to active flue gas recirculation (reintroduction of flue gases that go back up the chimney to the second stroke of the boiler).