Apparatus for crushing brittle material for grinding

Details Apparatus for crushing brittle material for grinding Apparatus for crushing brittle material for grinding

1989-10-23

1992-10-13

Gorski, Joseph M.

Solid material comminution or disintegration

Processes

With classifying or separating of material

241 20, 241 25, 241 29, B02C 2312, B02C 2338

Patent

active

051543621

ABSTRACT:
The invention relates to a method and to apparatus for crushing brittle material for grinding, in which the material for grinding is first of all crushed in a roller mill under high pressure so that agglomerates are formed, then undergoes treatment to break up the agglomerates and afterwards is classified on a screen classifier, the oversize fraction is returned to the roller mill and the proportion of the product passing through the screen classifier is passed to a closed-circuit grinding arrangement. Such a method is distinguished by a uniform grinding operation in both crushing stages, requires low energy consumption for conveying the material for grinding from the first crushing stage to the second crushing stage and thus permits a greater spatial distance between the two crushing stages.

REFERENCES:
patent: 2826370 (1958-03-01), Weston
patent: 4592512 (1986-06-01), Grigel et al.
patent: 4726531 (1988-02-01), Strasser

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