Air Swept Mills

Also known as: Pulveriser, Micronizer and Grinder.

Size reduction is achieved in a static circular housing using a high speed rotational beater plate.

  • The rotating beater creates airflow to pneumatically convey the product into the milling chamber.
  • The beater then imparts a force on the product to fracture the particles into smaller particles in the milling (or grinding) zone.
  • The high velocity airflow induced in the machine sweeps the milling chamber with product further abrading the particles and reducing their size.
  • Once the product particles have reached the end of the milling chamber they are either pneumatically conveyed into a dust collector as finished product or passed through an optional dynamic air classifier to separate the particles for re-milling.
  • The Dynamic Air Classifier is driven by an independent drive motor but forms an integral part of the complete Mill.
  • Beater plates are available in sizes 250mm, 500mm, and 750 mm diameter.

Whilst the primary function of an air swept mill is to reduce particle size, additional functions can be incorporated:

  • Cooling - when chilled air is used for heat sensitive products.
  • Flash drying - when high inlet temperatures are used.


  • The CasMill is suitable for Fine or Ultra-fine Milling of semi-hard, crystalline, brittle, fibrous and oily materials with a hardness up to 5 (Mohs Hardness Scale).
  • Maximum feed stock is 10 mm.
  • Minimum Finished Particle size is 10 micron (1/1000 mm)
  • Industries including: Food Production, Mineral, Pharmaceutical, Chemical, Plastics, Organics, Fertilizer, Cosmetics, Breweries, Paint and Ink production.
  • Suitable Materials include: Animal feeds, Wheat, Carbon, Fine Casein, Fine Lime or Calcuim Carbonate, Cement additives, Cereals and Pulses, Chemicals, Dried products, Dye Stuffs, Food related products, Freeze dried products, Lactose, Milk Powders, Minerals, Plastics, Powder Coatings, Rubber, Resins, Wood by-products.
  • Suitable for Pulverizing Fuel

CAS Air Swept Mills



kg / hr



40 – 100



100 – 300



300 – 1000



up to 5500

Want more details on this product?

Please contact us on 09 238 6343