The Ash Screen is used for improving and enhancing the boiler ‘s sand consumption by recycling the bottom ash fraction with correct particle size and returning it back into the boiler. This process significantly reduces the amount of needed additional sand for the boiler bed.
The Ash Screen can separate the removed bottom ash into two or three fractions; fine, accept and coarse. Coarse particles are considered to be over ø6mm and they will separated and moved to an ash container.
It is also possible to separate fines but normally this fraction is included in the accepted fraction, which is returned, after screening, into the sand silo for further use.