Agitator mill and method of use for low contamination grinding

Details Agitator mill and method of use for low contamination grinding Agitator mill and method of use for low contamination grinding

1999-03-17

2000-01-04

Husar, John M.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 241, 241 27, 241182, B02C 1700, B02C 1722

Patent

active

060100850

ABSTRACT:
The present invention provides a mill having an agitator and grinding chamber which is coated with a non-pigmented, abrasion resistant polymer and a method of using this mill to provide substantially pure ground particles. The polymer coating is typically a thermosetting polymer such as polyurethane or an elastomer such as a fluoroelastomer. The polymer coating provides an abrasion resistant layer between the milling media and the agitator as well as between the grinding chamber and the milling media to prevent spalling, thus increasing the purity of the resultant ground material. The agitator mill may optionally include a ceramic gap separator which is typically formed of stacked plates separated a predetermined distance by shims to separate the ground particles from the milling media in the grinder chamber, thus allowing only the ground particles to pass out of the grinding chamber.

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