The drum consists of a rotary body which is refractory lined using a highly heat resistant type of refractory adapted to requirements of the waste. It is slightly inclined (approx. 1Ëš) in order to move the product towards the post combustion chamber by the revolution of the drum. Drum revolution can be adjusted and usually is in the range of 0.5

to 1 rpm. This leads to a residence time of approximately 1 hour within the drum, assuring good burn out of the solid residue (bottom ash).

 

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