(1) gyratory crusher production capacity is high, the the broken blocks degree, but the heavy machine, Dimensions, height, size, corresponding to the desired wellbore size, roadway, underground crushing chamber height, chamber dug large. Therefore, selection of jaw crusher can not only meet the production capacity or the fragmentation of the requirements of a small number of large underground mine.

(2) jaw crusher simple structure, reliable operation, easy maintenance manufacturing, adaptable, and low cost, has been the most widely used crushing equipment in the field of crushing, the preferred underground mine and crushing equipment. The choice of jaw crusher There are two types: simple pendulum jaw crusher, complex pendulum jaw crusher. The former complex structure, the height of the equipment, heavy machine, processing capacity is relatively low. The latter structure is simple, reliable movement, and light weight. Simple pendulum jaw crusher production capacity of more than 30%. But the short life of the jaw, large energy consumption, eccentricity, vibration and noise, smooth operation and poor.