Double Cone Blenders

Double cone blenders provide an efficient but gentle blending action. They can be used for the blending of fragile granular products and dry powders.

The double cone blender consists of two cone shaped sections normally with 45deg slopes. The cone sections are welded at their ends to a center band. The blender is mounted between two trunnions that permit the unit to tumble end over end. An opening in one of the ends of the cones serves as inlet and outlet, or the inlet can be in one cone end with the outlet in the other. The blender tumbles, and the material in the vessel spreads out. The transition area at the band between the cones prevents the material from sliding along the inner wall and instead causes the material to fold over itself. This provides a gentle mixing with only very slight shear.

Double cone blenders are widely used in many industrial applications from pharmaceuticals and cosmetics to fine chemicals, dyestuffs and pigments, intermediates, animal feeds and foods. They are normally constructed from stainless steel, mild steel and glass lined. Fabricators of industrial double cone blenders include Gemco, Mitchells, Winkworth, Patterson Kelly, Pfaudler, Pharmatech and British Rema.