Pneumatic impact pulverizer, fine powder production apparatus, a

Details Pneumatic impact pulverizer, fine powder production apparatus, a Pneumatic impact pulverizer, fine powder production apparatus, a

1996-05-01

1998-11-24

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

By utilizing kinetic energy of projected or suspended material

241 40, B02C 1906

Patent

active

058396705

ABSTRACT:
A pneumatic pulverizer comprises an accelerating tube for carrying and accelerating powder to be pulverized with high-pressure gas and a pulverizing chamber for pulverizing the powder to be pulverized. The back end of the accelerating tube is provided with a pulverization powder feed port for feeding powder to be pulverized to the accelerating tube, the pulverizing chamber has an impact member having an impact surface opposed to the opening plane of the outlet of the accelerating tube, the and a side wall against which the powder to be pulverized that has been pulverized by the impact member collides to further pulverize. The closest distance from the side wall to a margin of the impact member, is shorter than the closest distance from the front wall of the pulverizing chamber opposed to the impact surface to the margin of the impact member, to prevent pulverized powder from fusing, coagulating, and getting coarser, and prevent localized abrasion of an impact surface the impact member and the accelerating tube.

REFERENCES:
patent: 3614600 (1971-10-01), Blythe
patent: 4304360 (1981-12-01), Luhr et al.
patent: 4930707 (1990-06-01), Oshiro et al.
patent: 5016823 (1991-05-01), Kato et al.
patent: 5316222 (1994-05-01), Kanda et al.
patent: 5358183 (1994-10-01), Kanda et al.
Section PO, Week 8942, Derwent Publications Ltd., London, GB (Nov. 29, 1989 .

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