Impact grinding method and apparatus

Details Impact grinding method and apparatus Impact grinding method and apparatus

B - Operations, Transporting

02

C

241/65

B02C 23/12 (2006.01) B02C 13/13 (2006.01)

Patent

CA 1172225

Impact Grinding Method and Apparatus Abstract of the disclosure For impact grinding a free-flowing feed material to a finished product of a narrow grain size range, partic- ularly in the cereal and feeding stuff grinding industry, the feed material is fed to an impact or hammer mill (1) having a sieve jacket (33),wherein it is subjected to a first impact grinding phase, during which a first finished product passes through the sieve jacket (33) while a recirculation material component is withdrawn from the grinding chamber (34) through exhaust means (51) provided on the sieve jacket (33), said recirculation material component being fed to a grain size separator means (4) comprising a sieve screen (44) for separating further finished product from an oversize component which is to be returned to the impact grinding phase, preferably together with newly introduced feed material.

391469

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