The firing and cofiring of biomass in large pulverised ...
Design study Tilbury Power Station, England RWE 2002 Biomass (olive residue) co ... • Hammer mills are more sensitive to tramp material and have a much higher maintenance requirement, depending on the fuel quality • The coal mill depends on a crushing mechanism, and tends only to break the pellets back to the original sawdust size distribution • The mill has to be modified .