Process for crushing raw lignite

Details Process for crushing raw lignite Process for crushing raw lignite

1993-07-13

1994-10-11

Eley, Timothy V.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 19, B02C 2100, B02C 2330

Patent

active

053539974

ABSTRACT:
The invention relates to a process for crushing raw lignite. The raw lignite is dried with an exit temperature after drying of approximately 70.degree. to 85.degree. C. The dried raw lignite is then crushed. This crushing of the dried raw lignite is performed in an air-swept roller mill, in which the crushing and cooling of the lignite particles is brought about by the inflowing cold and/or ambient air to a temperature range of below 60.degree. C.

REFERENCES:
patent: 2909330 (1959-10-01), Hardinge
patent: 4817441 (1989-04-01), Porowski et al.
patent: 4932594 (1990-06-01), Kim

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