The CMS Air Classifier Mill System combines impact grinding and particle size classification in a single continuous process (occurring inside the mill) rather than in a separate downstream process. Independent drives for the classifier wheel and impact rotor allow the operator to adjust each component’s rotational speed independently. Drag and tip speed control the product’s sizing. The efficiency of air classifier mills allows the grinding and classification to occur inside the mill, rather than in a separate downstream process. CMS Air Swept Classifier Mills are available in horsepowers from 1 HP to 600 HP. 

The grinding zone configuration positions Impact Hammers mounted at the periphery of the Rotor Plate (below the Classifier Wheel). A ring-shaped Reversible Liner (smooth or multiple-deflector liner) surrounds the Rotor Plate and Hammers. A Deflector assembly (shroud/baffle), located above the Impact Rotor and between the Liner and Classifier Wheel, constitutes the grinding zone. The space between the Classifier Wheel and Deflector assembly forms the classification zone.

Mill Operation

Air is drawn into the grinding chamber via the air inlet feed, flowing upward from below the Rotor Plate (disc), and dispersing the material through the grinding zone.  There, the rotating Impact Hammers impact the feed material and deflect particles into the mill’s Liner, which is configured in a way to slow the circumferential speed of the particles.  The Liner deflects the particles back to the hammers, adding impact force. Size reduced particles flow to the Deflector Assembly, which diverts the particles into the classification zone. Fine particles pass through the classifier wheel vanes, (flowing to the product-and-air outlet), while coarse particles return to the grinding area for further reduction.

Separate drives for the classifier wheel and impact rotor allow you to adjust each component’s rotational speed independently. Drag and tip speed control the product’s sizing.

CMS Air Classifier Mill Systems

(MODEL NUMBER = HORSEPOWER)

MODEL HPCFMKG / HRLBS / HR
220050110
5280100220
10550250550
15800340478
201100450990
2514005801276
3016007001540
4022009001980
50265011502530
60320014003080
75400017003740
100520022504950
120640027005940
150800034007480
2001060045009900
30016000680014960
40022000900019800
600300001100025000

Benefits of CMS Air Swept Classifier Mills

One of the most valuable benefits this impact grinding air classification mill offers is its reliability over time. Our grinding systems are custom designed for your product, delivering superior quality products at peak operational efficiency. Other benefits include:

  • Produce excellent product quality
  • Add significant production capacity
  • Lower production costs (lower unit cost of finished products)
  • Easily adjust particle size without system shutdown
  • Consistent particle size fineness down to 5 µm
  • Energy-efficient and easy to maintain and operate
  • Low grinding temperatures, tighter distributions, and high-volume thru-put

With solid steel construction, both chamber and working parts are long-lasting. Internal components are available in stainless steel, Abrasive Resistant Materials, and Ceramic. For added safety, all mills above 5HP include a hydraulic lid lift – available in both coaxial and independent designs.

Air Classifier Mill System Features & Benefits_2019-2020

pdf icon Presentation CMS Classifier Mill simple drawing 2020

CMS Air Swept Classifier Grinding System Components:

  • Air Swept Classifier Mill
  • High-Efficiency Cyclone (or Cyclone Classifier)
  • Dust Collector: 99.9% Dustfree
  • Industrial Fan Set
  • Control Panel

Please note that each component is available separately or as complete grinding systems.