primary secondary crushers,Crusher - WikipediaA crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. ... Gyratory crushers can be used for primary or secondary crushing. The crushing action is caused by the closing of the gap between the mantle line.primary secondary crushers,Crusher | Definition | Crusher Selection And Types of Crusher .Aug 10, 2012 . Primary crusher; Secondary crusher; Tertiary crusher. Primary crusher has the ability to receive the crushing material (a material that has to be.
primary secondary crushers