Crusher - Wikipedia. A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated.
100T/H Low-spec Plant. Calcite Crusher. Calcite has a very wide distribution in the world, and its main component is ground calcium carbonate. This mineral can be used as filler, which increases volume of products, and production cost will be reduced efficaciously by this way. Calcite plays an important role in rubber, plastic, papermaking ...