Comminution of material

Details Comminution of material Comminution of material

B - Operations, Transporting

02

C

241/83

B02C 17/00 (2006.01) B02C 23/06 (2006.01) B02C 23/26 (2006.01)

Patent

CA 1309997

ABSTRACT Material is comminuted in a substantially dry state in a chamber (4) as a result of agitation by a rotor. During the process, gas is admitted to the chamber (4) through a foraminous base (8) to flow upwardly in a uniform manner across the cross-section of the chamber. Pulses of gas are directed periodical- ly at the material through inlets (15) to prevent agglomeration of the material. The pressure of the gas admitted through the inlets (15) is higher than that admitted through the foraminous base (8). Surface active agents may be added to the material, also to prevent agglomeration, as well as, or instead of the use of pulsed gas.

515036

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