Crushing material

Details Crushing material Crushing material

2005-10-24

2011-12-06

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Processes

By operations other than force of contact with solid surface

C241S029000, C241S152200, C241S159000, C241S301000

Reexamination Certificate

active

08070078

ABSTRACT:
A method and an apparatus for crushing material, particularly mined material, are disclosed. In one embodiment two or more pairs of crushing rolls successively crush mined material. The pairs of crushing rolls are arranged and operated so that an upstream pair of rolls produces a feed, preferably a pressurized feed, for a downstream pair of rolls. In another embodiment, at least an upstream pair of rolls is driven intermittently, for example, by means of a stepping motor to provide stepped rotational movement of the rolls.

REFERENCES:
patent: 2158321 (1939-05-01), Brown
patent: 2622855 (1952-12-01), Kulp et al.
patent: 4655400 (1987-04-01), Erb et al.
patent: 2003/0029944 (2003-02-01), Flinn et al.
patent: 2 164 925 (1997-06-01), None
patent: 2 440 311 (2005-04-01), None

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