Quarrying Stone Crusher for Sale

Primary crushing is normally by a jaw crusher consisting of a heavy metal plate which moves backwards and forwards against a fixed plate (these are the “jaws”).Secondary, tertiary and quaternary crushers are usually gyratory, or cone, crushers.

These operate on the principle of a steel mantle mounted on an eccentric bearing and vertical shaft assembly. Rotation on the eccentric assembly tends to make the mantle gyrate within a static outer concave. There is a gap between the mantle and also the concave.

The shape of the gap is tapered towards the base. Because the mantle gyrates inside the concave, the gap between it along with the concave at anybody point opens and closes on every gyration, this produces the needed crushing action. Stone is fed in in the prime and crushed solution falls out from the bottom from the cone.

The mantle might be raised or lowered within the concave, allowing the gap, and consequently the size on the crushed item, to become varied to a restricted degree. If the crusher is jammed by a stray bit of steel, e.g., a digger bucket tooth, the mantle automatically moves down to clear the obstruction.