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PATTERSON Industries Canada "The Process Equipment People" custom designs, engineers and manufactures Continuous Ball and Pebble Mills for a variety of applications.

PATTERSON Continuous Ball, Tube and Rod Mills are designed for open or closed circuit grinding under the most severe and exacting applications. By proper selection of linings and grinding media, these mills may be used for practically all-metallic and non-metallic minerals, for the production of metal powders and for processing an infinite variety of grindable materials. Since the product is processed in a closed cylinder, it is uncontaminated by oil or grease leakage.

PATTERSON Continuous Mills are available for fine or coarse grinding in all sizes from 24" diameter to 96" diameter and from 36" long to 30'0" long.

Open Circuit Operations
Continuous open circuit operation is smooth, simple and positive. Material passes steadily through the open feed trunnion of the mill. It is then ground to desired fineness and discharged at the opposite end.

Closed Circuit Systems
Continuous Mills are used in closed circuit operations for maximum control of product size, economical grinding and low contamination. Screens, mechanical air classifiers or pneumatic classifiers are embodied in the Continuous Mill System for dry grinding. For wet grinding the mill may employ a wet classifier, screen or centrifugal classifier. Rapid removal of ground material from the mill prevents over-grinding and achieves a more uniform product. In the closed circuit system, fine particles are removed from the finished product and oversized particles are returned to the mill.

Grinding Density
Fineness of Grind Continuous Mills may be used to grind products with a fineness of 1/4" (6.5 mm) to 10 microns, (.01 mm).


  • Metallic Powders (Steel)
  • Gypsum Wallboard Additives
  • Bronze Powders and Minerals
  • Carbon and Coal

Design Features:

  • Individual custom-designed to suitable applications.
  • Unlined Steel or with replaceable Ni-Hard (Steel) Liners or Lined with Arlcite Alumina-based.
  • With or without jacket and automatic thermal controls.
  • Ring gear and pinion or torque arm drive.
  • Dry discharge housing for dry grinding.

Units can be individually designed to customer's material specifications and process parameters. Complete the Ball and Pebble Mill Specification Sheet and submit by e-mail to PATTERSON for quotation.

Mill Linings:

PATTERSON Ball and Pebble Mills may be lined with Burhstone or ARLCITE alumina.  The lining to use is determined by the application and PATTERSON's experience.

PATTERSON offers ARLCITE lining materials for installation in our plant or at customer's plant by fully qualified PATTERSON personnel.

Grinding Media:

PATTERSON Mills may be charged with Flint Pebbles, ARLCITE balls or Molloy steel balls in sizes from 1/4" (6.5 mm) to 2" (5.2 cm) diameter.  Here too, the selection is determined by the application and PATTERSON's experience.

PATTERSON stocks some ARLCITE High Density Porcelain Grinding Media, Select FLINT PEBBLES, polished and unpolished ALLOY STEEL Grinding Balls in a variety of sizes or has them available for custom orders.



Control Systems

Please note:  PATTERSON has in-house expertise to design and supply operating control systems for all of our process equipment, whether it is a simple start/stop with cycle time or complex multi-stage systems executing recipes or formulas and communicating with existing plant control systems.


Close up of Control Box with stop/start, jog/run and 0-12 hr timer.


Control Panel Overview including HMI Touch Screen.


Close-up of Inside of Control Panel with PLC and Variable Frequency Motor Controllers.