Crushing Cavity Design

The crusher liners which compromise the Gyradisc crushing cavity design are made up of an upper liner which is assembled to the bowl and a lower liner which is mounted on the head or main shaft assembly. Due to the wide range of feed and product requirements, the availability of variations in cavity design becomes an important factor in a successful Gyradisc operation.
Based on the feed and product requirements the throat opening designed as “B” in the diagram to the right is effected by the proper grinding of the liners. The reduction ratio per gyration is shown by comparing the open side dimension “C” with the closed side throat opening “B”. The closed side setting designated as “A” is normally between ¼” and ½” even when producing fine products in closed circuit below U.S. No. 8.
With coarse feed in the range of ½” to 4” and for coarse aggregate requirements above U.S. No. 4 the throat opening “B” would be modified to permit entry of the feed into the attrition zone in sufficient volume to draw the design horsepower. This type of operation requires settings up to 1”. Refer to the table below.

 

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