Grate assembly in a down draft impact mill

Details Grate assembly in a down draft impact mill Grate assembly in a down draft impact mill

1990-07-20

1991-05-28

Eley, Timothy V.

Solid material comminution or disintegration

Apparatus

Comminuting surface provided with openings to permit...

241 74, 241189R, B02C 13284

Patent

active

050186744

ABSTRACT:
A rotary hammer grinding mill having the rotary hammer rotor exposed in a housing between a material inlet and a ground material outlet in which the grate assembly on the outlet side of the rotor is composed of a series of spaced cradle ribs curving around the outlet side of the rotor and supporting a series of spaced bars directed transversely to the cradle ribs. The cradle ribs and bar spacing defines a series of openings having short passages offering greatly reduced resistance to the flow of ground material so there is substantially established a down-draft operation of the mill without the need to connect up a suction fan to the mill outlet.

REFERENCES:
patent: 1751009 (1930-03-01), Liggett
patent: 3480214 (1969-11-01), Wageneder
patent: 3891152 (1975-06-01), Guggenheimer
patent: 4637557 (1987-01-01), Vitunac
patent: 4706899 (1987-11-01), Schonfeld et al.

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