Single Flight Helical Ribbon with Screw
A reasonably efficient high viscosity, laminar flow impeller. Blend times are about the same to somewhat longer than the double flight helical ribbon impeller. The central screw can effectively pull down solids and liquids from the surface when the helical ribbon is pumping up. Generally used for applications where viscosities are ordinarily greater than 30,000 MPa. Heat transfer coefficients are only slightly less than the double helical ribbon impeller.