... 4.smooth rotation 1. The description of drying machine for sludge1. Drying machinefor sludge is also called roll dryer, ... through the dryer under.2. This kind of drying machine for sludge has introduced advanced technology,through continuous transformation, ... drying machine for sludge 1) high dry capacity,2) smooth rotation,3) high output. 4) the drier is really a perfect combiantion of drying and ...