Air Swept Pulverizers

How the Air Swept Pulverizer Works

The infeed material is fed into the air stream at the mill inlet (1) in a consistent metered fashion.

The beater plates (2) impact and reduce the size of the largest particles and distribute the material around the periphery of the grinding zone where product is ground against the liner (3) by the hammers (4) which are mounted on the beater plates. The beater plates rotate at between 1,600 and 7,000 rpm with tip speed velocities ranging from 19,500 to 34,000 feet per minute to achieve specific particle size distribution output.

The classfier plate (5) separates the finely ground product for exit through the discharge outlet (6) while returning oversize material back to the mill inlet through the recycle housing (7).

The Jacobson Air Swept Pulverizer grinds down as low as the 5 micron range using the maximum number of beater plates and highest speed setting. The ASP is commonly designed with heat input to grind and dry wet products, or cooling for cryogenic grinding. Simple adjustments to the machine allow a narrow distribution range of output particles on wet, dry, fibrous, or heat sensitive materials. Stearates, for example, are easily ground from 10 mesh down to 100% minus 325 mesh. A partial list of some of the products currently being ground on the ASP include:

  • Adhesives
  • Cheese whey
  • Dextrose
  • Pigments
  • Spices
  • Inorganic chemicals
  • Dyes
  • PVC
  • Wheat
  • Barley
  • Bran
  • Sugars
  • Bentonite
  • Clays
  • Gums
  • Polyesters
  • Talc
  • Calcium carbonate
  • Cocoa
  • Herbs
  • Oats
  • Rice
  • Plastics
  • Polypropylene
  • Carbon black
  • Cosmetics
  • Powders
  • Pharmaceuticals
  • Salt
  • Wood flour
  • Botanicals
  • Aquafeeds
  • Resins
  • Lactose
  • Limestone

Dust Free Operation

Negative air pressure design keeps dust out of the air to eliminate health and plant hazards while resulting in clean conditions around the machine.

Economy of Operation

The basic efficiency of the ASP design delivers an exceptional ratio of product yield to power consumption, processing time and related production costs.

Ease of Maintenance

The Jacobson ASP is undoubtedly the easiest fine grinder on the market to clean, to change out wear parts, or to service the drive and bearings.