Different Types of Secondary Rock Crusher

Rock crusher is used to, just as its name, crush rocks. It is widely used in construction sites and mining industry. According to its use, rock crusher can be divided into two major types: primary rock crusher and secondary rock crusher. Primary rock crusher is used to break down large stones which haven't been broken down while secondary rock crusher is used to crush smaller stones which have been crushed once. There are several types of secondary rock crushers. If you want to know the difference between them, read the article belows.

Gyratory crusher is a type of secondary rock crusher. There is a narrow opening at the bottom of gyratory crusher. Only if the stone is crushed into desired shape, it can fall through the opening. The gyratory crusher break down stones by pressing between two components--an eccentrically-gyrating spindle and an enclosing concave hopper. In order to make the spindle durable, it is designed with a a wear-resistant coat.

Cone crusher is used for the secondary crush. Compared with the gyratory crusher, the crushing chamber in a cone crusher isn't as steep as it is in a gyratory crusher and the positions of the different crushing zones is more parallel. When the cone crusher operates, its central cone spins and the walls are tapered, so the rock keep hitting the wall until it fall through the opening at the bottom.

Impact crusher can be considered as both primary and secondary rock crushers. There are two major types of impact crusher , HIS and VSI. VSI crushers keep throwing the material in its hammer against the surface until the material is crushed into desired shape. On the contrary, the HIS crushers use hammers which swing on a shaft to crush stones.

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