Wear part for gyratory crusher and method of manufacturing...

Details Wear part for gyratory crusher and method of manufacturing... Wear part for gyratory crusher and method of manufacturing...

2006-12-26

2006-12-26

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

Reexamination Certificate

active

07152822

ABSTRACT:
A gyratory crusher includes a first shell having a support surface intended to abut against a shell-carrying member, and a first crushing surface intended to be brought into contact with material fed into the upper portion of the crusher, to crush the material against a corresponding second crushing surface disposed on a second shell arranged opposite the first shell. The first and second crushing surfaces oppose one another in spaced relationship to form a gap through which the material travels as it is being crushed. The gap includes an upper inlet and a lower outlet. Over at least 50% of the vertical height, from the outlet upwards toward the inlet, the first crushing surface is machined to a run-out tolerance, which on each level along the machined part of the vertical height does not exceed one thousandth of the largest diameter of the first crushing surface, or 0.5 mm, whichever is less.

REFERENCES:
patent: 1894601 (1933-01-01), Symons
patent: 2970783 (1961-02-01), Cheyette
patent: 4566638 (1986-01-01), Lundin et al.
patent: 6123279 (2000-09-01), Stafford et al.
patent: WO 93/14870 (1993-08-01), None
patent: WO 03/099443 (2003-12-01), None

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