Impact grinding method and apparatus

Details Impact grinding method and apparatus Impact grinding method and apparatus

1984-10-05

1986-05-06

Goldberg, Howard N.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 24, 241 61, 241 74, 241 80, 241 81, 241 97, B02L 2308, B02L 2318

Patent

active

045866589

ABSTRACT:
For impact grinding a free-flowing feed material to a finished product of a narrow grain size range, particularly 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during which a first finished product passes through the sieve jacket (33), while a recirculation material component is withdrawn from the grinding chamber (34) through exhaust means (51) provided on the sieve jacket (33), said recirculation material component being fed to a grain size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.

REFERENCES:
patent: 3078050 (1963-02-01), Hardinage
patent: 3106523 (1963-10-01), Couture
patent: 4339085 (1982-07-01), Williams

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