A vertical shaft impact crusher, also is frequently called vertical compound crusher or vertical sand making machine, which is operated on the principle of accelerating the rock to a high speed and causing it to impact against a target which will cause the rock to fracture. There are essentially two types of impact crushers: autogenous impact crushers and anvil impact crushers. The autogenous variety uses a bed of the same material that is being broken or crushed as the target area so that the rock which is accelerated impacts against other rock of the same type. Anvil type impact crushers utilize a hard target such as manganese steel as the target area.

The autogenous and anvil types of impact crushers are used for different purposes. Autogenous crushing is used primarily for reshaping rock which is already approximately the right size. It is most frequently used on wash gravel or natural rock which is smooth and needs to be reshaped with flat faces so that it can be used as aggregate in concrete and the like.

Anvil breaking, on the other hand, produces a shattering action on the rock so that the majority of the product is near the central region of the product size distribution spectrum. Anvil breaking is used primarily to reduce the size of the input rock rather than to reshape rock which is already approximately the correct size.

Application of vertical shaft impact crusher

Vertical shaft impact crusher is best for medium hardness materials, typical materials like limestone, quartz. Feeding size as high as 100mm, discharge size less than 5 mm account for more than 80%.

Testing of materials in deya machinery’s workshop