Coarse Grinding Services


Custom Processing Services can reduce particle size of materials in a number of ways using our Pulverizing Service, Minerals Pulverizing, Cement Grinding Service. Depending on the original raw feed size and the desired product size, CPS production managers configure a methodology that creates the desired outcomes. Often, drastic size reduction is done in phases or steps.

At the company’s East Greenville, PA, facility, size reduction is accomplished by contacting material with substantial force and striking metal. At the Reading, PA, facility size reduction is accomplished using fluid bed air jet mills to create a particle on particle collision. Each of these methods has its own set of desired attributes.

CPS’s experienced staff excels at consulting with clients as to which of the various grind methods is most applicable to unique product grinding needs. The customer benefits from Custom Processing Services access to a broad width of choices directly under its control.

Bradley Mineral Pulverizer


Custom Processing Services utilizes Bradley mill technology to pulverize raw materials to a -325 mesh. The air swept mill system is integrated with the CPS coarse system processing to allow crushing, drying, grinding, screening, pulverizing and classifying to take place simultaneously.

Pulverized material from the grinding zone is carried by the air stream to a separator mounted directly above the mill. From there, product-size material is carried to a collection cyclone while oversize particles are rejected and recycled for further grinding.

Mineral Pulverizing Services

  • When size reduction from 30 mesh to below 15 micron is required, CPS’s Bradley BPH 8 / 50” with a new RSG’s MCS-250 Dynamic Classifier is used.
  • Traditionally, roller mills can achieve a -325 mesh or a 44 micron size. This classifier has helped CPS achieve particle sizes below 15 microns.
  • The roller mill is used as a stand alone and inline processing system.

Bulk Material Handling



  • Able to receive bulk trucks & railcars
  • Case 821B Loader creates and manages piles in customized bulk bins
  • Built-in calibrated scales
  • Conveyor system
  • Can process 100-ton rail cars

What Sizes?

From 24″ to .0017″

More information?

Download a flyer (pdf) that explains our services.

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