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Mikro® UMP Attrition Mill

Mikro® UMP Attrition Mill


The Mikro® UMP Attrition Mill is high speed cutting mill designed for the fine size reduction of plastics, polymers and fibrous materials that do not respond well to other forms of impact milling. It is designed to grind heat sensitive and soft materials without liquid nitrogen or conditioned air. 

The raw material enters the grinding zone from a feeding device through the centrally located feed inlet. Size reduction takes place between the adjustable stator plate and high speed rotating grinding plate. The particle size is reduced as it passes through the tapered plates, which has a wider gap at the center of the plates where the materials is introduced and is closest at the periphery of the plate where material exits. The finely ground product exits the grinding zone and discharges into the product container. Essentially the fineness of the product is dictated by the number of teeth on the plates, rotational speed of the rotor, as well as the gap between the plates.

Design & Features:

  • Capable of fine grinding to D90 = 100 µm or finer depending on the material & application
  • Lab & production models available from 1 HP to 40 HP
  • Capacity ranges from 5 lbs/hour up to 3,000 lbs/hour
  • Energy efficient & economical to operate
  • Fabricated stainless steel construction
  • Variable speed rotor drive
  • Cantilevered design for ease of cleaning
  • Maintenance free, sealed for life bearings
  • Double lip seals & gas purging between drive & process area
  • Compact design & dust free operation
  • Gravity or pneumatic conveying discharge available
  • Chilled or Cryogenic operation available
  • Variety of feeding options and system configuration
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