Trommel Screen

A trommel is a slightly inclined rotating cylindrical screen. The material is fed at one end of the cylinder and the undersize material falls through the screening surface while the oversize is conveyed by the rotating motion down the incline to the discharge end. Although trommels are relatively cheap, they have lower capacities and are susceptible to rapid wear; hence they have been largely replaced by vibrating or shaking screens. A trommel can handle both dry and wet feed material.