Centrifugal impeller type liquid-liquid mixer with means for forced recirculation

Abstract From the Canadian patent

A liquid-liquid mixer is disclosed of the type including a vertically cylindrical vessel having a coaxial impeller with radial vanes whose diameter is about 50% to 90% of the inside diameter of the vessel. The impeller is operatively associated with recirculation chambers axially spaced from but adjacent to the impeller and having curved tangentialradial upright partitions for directing a portion of the mixture propelled by the impeller into an annular space between the outside of the impeller and the vessel back towards the, center of the respective chamber to reintroduce the mixture to the center of the impeller. The impeller and the recirculation chambers are coaxial and have generally …