This company has expanded its PDDM planetary mixer line to include larger working capacities up to 750-gal. The multi-agitator mixer features two planetary stirrer blades and two high-speed disperser shafts. Designed for highly viscous and highly filled applications, the hybrid planetary mixer/disperser can incorporate large amounts of dry ingredients into thick or sticky liquid, and apply shear to achieve a smooth and uniform consistency.

Shown is a 300-gal model equipped with a total of four saw-tooth blades that spin on high-speed shafts while revolving around the vessel, accelerating solids dispersion and particle size reduction. Two helical planetary stirrers rotate at lower speeds to turnover batch material for a product that can be evenly mixed and heated regardless of flow characteristics. A sidewall scraper arm reportedly further allows material and heat transfer around the vessel periphery. At any stage of the mixing cycle, operators can fine-tune the observed flow turbulence and shear because the stirrers and dispersers are independently driven by two different motors.