There are several types of machinery used for crushing rocks, each designed for different stages of the crushing process and for different types of materials. Some of the most common types include:
Jaw Crushers: These are used for the primary crushing of large rock fragments. They use a squeezing motion to break the rock between a fixed and a moving plate.
Gyratory Crushers: Similar to jaw crushers, gyratory crushers are often used for primary crushing but can handle larger capacities and are typically used in heavy-duty applications.
Cone Crushers: Used primarily for secondary crushing, cone crushers crush rock by squeezing it between a gyrating spindle and an enclosing concave hopper.
Impact Crushers: These are used for the secondary or tertiary crushing of softer, less abrasive rocks. They use a high-speed rotor to throw the rock against impact plates, breaking it into smaller pieces.
Hammer Mills: Suitable for softer and less abrasive materials, hammer mills use rotating hammers to smash the rock against a rigid surface.
Roll Crushers: Ideal for fine crushing, roll crushers use two rotating cylinders to crush the rock between them.
Vertical Shaft Impact (VSI) Crushers: These crushers use a high-speed rotor and anvils to cast the rock against. They are excellent for producing cubically shaped aggregate.
Each type of crusher is chosen based on the hardness, size, and abrasion properties of the rock, the desired capacity, and the final product specifications.
