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Intensified Shearing Action

Charles Ross has designed its PDDM planetary dual dispersers for high-viscosity and high-solids applications.

Charles Ross & Son has expanded its line of PDDM planetary dual dispersers to offer more sizes of this mixing system, which has been designed for high-viscosity and high-solids applications.  According to the company, these hybrid planetary mixers also provide:

  • 4 agitators — 2 planetary stirrers and 2 high-speed dispersers — rotating on their own axes, while orbiting the mix vessel on a common axis.
  • Planetary stirrers that continually turn over batch material, feed fresh product to the high-speed blades and promote heat transfer throughout the different areas of the mixing zone.
  • Saw-tooth blades on each high-speed shaft to intensify shearing action, which is ideal for rapid dispersion and particle size reduction.
  • Quick and even incorporation of solids into an already thick starting liquid, while stubborn agglomerates are broken down effectively, regardless of the product’s flow characteristics.
  • Operation over a wider viscosity range — up to several million centipoise — when compared to single-shaft dispersers and multi-shaft mixers consisting of agitators with a fixed axis of rotation.
  • Precise control over shear levels and flow patterns because the agitators are independently driven and controlled.
  • Sidewall and bottom scrapers to optimize uniformity of temperature and composition.

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