Vertical roller mill

Details Vertical roller mill Vertical roller mill

1988-12-07

1989-09-26

Eley, Timothy V.

Solid material comminution or disintegration

Apparatus

With automatic control

241119, B02C 2500, B02C 2326

Patent

active

048694347

ABSTRACT:
A vertical roller mill has a rotatable grinding table (1) which is fed with material to be ground through a feed pipe (14) so that a cone of material is formed between the bottom of the pipe and the table, and scrapers (25) for intercepting the cone and spreading the material over the table and under grinding rollers. In order to avoid the feed pipe running empty so that the cone is not formed, sensors (21) sense the level of material in the pipe and controlling means (19,20) responsive to the sensors adjust the height of the feed pipe and/or the angle of the scrapers.

REFERENCES:
patent: 1623287 (1927-04-01), Straight
patent: 2610802 (1952-09-01), McIlvaine
patent: 2984423 (1961-05-01), Roth
patent: 4442980 (1984-04-01), Oetiker et al.
patent: 4489895 (1984-12-01), Petersen
patent: 4582260 (1986-04-01), Folsberg
patent: 4715544 (1987-12-01), Folsberg

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