Method and apparatus for heating and grinding materials

Details Method and apparatus for heating and grinding materials Method and apparatus for heating and grinding materials

1994-08-24

1996-12-03

Eley, Timothy V.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 18, 241 23, 241 65, 241117, B02C 2324, B02C 2332

Patent

active

055800025

ABSTRACT:
Hot gas is introduced into a fluidised bed of granular material, for example gypsum, contained in a vessel 10 having a grinding device or mill 11 in its lower region, which may comprise grinding rollers 15 cooperating with a table 17 on the base of the vessel. The gas may be supplied through a tube 20 passing down through the vessel, while raw material is fed into the bed, preferably by a feed screw 34. The ground product is discharged from the bed by an overflow 28 which determines the level of the bed.

REFERENCES:
patent: 1984201 (1934-12-01), Senseman
patent: 3236509 (1966-02-01), Blair
patent: 3348819 (1967-10-01), McIlvaine
patent: 4176157 (1979-11-01), George et al.
patent: 4370198 (1983-01-01), Dencs et al.
patent: 4511093 (1985-04-01), Ohkoshi et al.
patent: 4629419 (1986-12-01), Ward et al.
patent: 4915623 (1990-04-01), Ball et al.
patent: 4919341 (1990-04-01), Lohnherr
patent: 5011668 (1991-04-01), Ball et al.
"The Claudius Peters EM-Mill," (Brochure) Claudius Peters AG, 1991.

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