Method and apparatus for fine grinding

Details Method and apparatus for fine grinding Method and apparatus for fine grinding

B - Operations, Transporting

02

C

241/25

B02C 19/18 (2006.01) B02C 13/14 (2006.01)

Patent

CA 1328862

ABSTRACT A method and apparatus for fine grinding materials normally difficult to grind at ambient temperature, e.g. plastic and elastomeric materials and foodstuffs in a fluid classification type impact mill utilizing liq- uid cryogen to pre-cool the material to be ground, to cool the material and the mill during grinding and to recycle vaporized cryogen from the mill back into the mill as the medium for conveying material to be ground into the mill.

583552

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