How it Works

The PerMix PFB & PFBS series Fluidized Bed Mixer / Signle or Twin Shaft Paddle Mixer Non-gravity Mixer consists of paddles with special angles that are mounted on shafts in a ‘U’ or ‘W’ shaped trough. During operation, the shafts are rotating at high speeds, and in the Dual Shaft units, spin in opposite directions. The paddles sweep the entire bottom of both the trough, and materials are lifted floating between the shafts (as zero-gravity zone) by the centrifugal force generated by the paddles. At this weightless zone, mixing of materials of different density is easy and fast because material particle can move freely and randomly, regardless of particle size and density. This brings a rapid and highly homogenous mixing.

Advantages and Features

  1. Very fast mixing to supply a typical mixing time from 10 seconds to only 1 minute
  2. Free particle movement
  3.  Minimal heat and low shear for shear and heat sensitive materials (Due to the fact that low friction without shear in this non-gravity zone is generated, this makes the PerMix PFB series Fluidized Bed Mixer / Twin Shaft Paddle Mixer an ideal machine for fragile products that can’t tolerate rough handling, even flakes or spray dried bodies remaining intact after mixing.)
  4. Easy cleaning and hygienic design with minimal blind corners
  5. Low maintenance
  6. Big bomb bay door for fast discharging & reduced segregation
  7. Liquid addition by spray balls, nozzles, or dripping pipes
  8. Leading edges of the ribbons can be coated by Tungsten Carbide for very abrasive materials.
  9. Intensive choppers to break lumps
  10. Various drive system (single motor/gearbox with chain; dual motor/gearbox, single motor with dual gearbox)


PerMix-Single Shaft Fluidized Zone Mixers Specification