Solid material comminution or disintegration – Apparatus – Including means applying fluid to material
Patent
1982-12-13
1985-06-11
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
Including means applying fluid to material
241 61, 241110, 241124, 241129, B02C 1502, B02C 1508, B02C 2340
Patent
active
045223432
ABSTRACT:
Apparatus for grinding coal to micron fineness having a grinding chamber with a grinding surface supported by a circumferential wall in the grinding chamber, a plurality of grinding rolls orbiting in the grinding chamber for grinding the coal, air supply bustle surrounding the grinding chamber, air flow restrictor means opening from the air supply bustle to the grinding chamber to create a back pressure in the air supply bustle for substantially evenly distributing the air supplied to the grinding chamber around the circumference of the grinding chamber, and wherein the restrictor means directs the air flow tangentially relative to the circumferential wall of the grinding chamber so that the coal particles are caught up in a cyclonic movement having a large initial horizontally directed force to maintain a body of coal particles in the orbit of the grinding rolls, which horizontal force gradually diminishes as the vertical force component of the air flow lifts the ground coal particles out of the grinding chamber.
REFERENCES:
patent: 1769352 (1930-07-01), Libbey
patent: 1781572 (1930-11-01), Drummond
patent: 2200489 (1940-05-01), Cook
patent: 2601954 (1952-07-01), Crites
patent: 2815903 (1957-12-01), Crites
patent: 2909330 (1959-10-01), Hardinge
patent: 3337142 (1967-08-01), Williams
patent: 4022387 (1977-05-01), Williams
patent: 4056233 (1977-11-01), Fay
patent: 4264041 (1981-04-01), Kitto, Jr. et al.
Eley Timothy V.
Rosenbaum Mark
Williams Patent Crusher and Pulverizer Company
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