Gyratory and Cone Crusher ScienceDirect
Jan 01 2016 · Primary crushers are solidly built to receive large lumps of rock directly from the mines and designed for large tonnage throughputs Basically gyratory crushers consist of a fixed solid conical shell or bowl also called concaves and a solid cone within the bowl called a breaking head Figure 51The breaking head is fixed to a central spindle which is hydraulically suspended or