Crusher - WikipediaA 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 .. Both materials were considered superior to iron for cannon, and machines.secondary crusher for iron ore application,Iron ore crushingAug 17, 2016 . increase yield at iron ore crushing】☆》CRUSHER GROUP increase yield at iron ore crushing Description : Application of Kriging Method in.
secondary crusher for iron ore application