Good agitated Nutsche filter dryer performance relies heavily on the agitator design. The design of this companys agitator has a series of sharp curved blades with spaces at different centers of each arm. When moving or lifting filter cake product between the gaps within the filter dryer agitator, the product moves at a lower velocity and is subsequently swept by the second arm of the blade. Thus efficient mixing is achieved by different velocities. The curved agitator blades also achieve penetration into difficult cakes without undue stress. — Powder Systems Ltd., Liverpool, U.K.