The cone crusher is widely used for secondary and fine crushing in the fields of mining, chemical industry, building materials, metallurgy and so on. It can crush materials with Moh’s scale in middle and high hardness such as ironstone, copper ore, limestone, quartz, granite, rock and so on. The standard type (PYB) is applied to secondary crushing; the medium type (PYZ) and the short-head (PYD) are applied to fine crushing.
When the cone crusher is working, the motor drives the eccentric bearing bushing via spring coupling, transmission shaft and a couple of cone gear wheel. The crushing cone axis is forced to swing by the eccentric bearing bushing, which makes the mantle close to the bowl liner and far away from the bowl liner from time to time. The raw materials are pressed, impacted and finally crushed in the crushing cavity.
Cone crusher and gyratory crusher work on the same principle. Both have the same operation. If cone crusher differs then it is only from crushing chamber. Cone crusher has a less steep crushing chamber and more parallel zone between crushing zones.
It breaks the rocks by squeezing it between the gyrating spindles. These spindles are fully covered with resistant mantle and a manganese bowl liner covers the hopper. Rocks get squeezed at the same moment when it enters in between the bowl liner and mantle. Only one time breaking is carryout of larger pieces of rocks from ore.
Broken pieces of rocks fall down to the next position where it is broken again. Same process continues until the broken pieces become small enough so that it can pass through the narrow opening that is at the bottom of the cone crusher.
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