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 . The earliest crushers were hand-held stones, where the weight of the stone provided a ... Gyratory crushers can be used for primary or secondary crushing.primary and secondary stone crushing plants,primary and secondary stone crushing plants,primary secondary crusher plantsAug 25, 2016 . Primary Stone Crusher,Secondary Crusher,Tertiary Stone crusher manufacturer, CGM supply whole stone crusher solution plant Mobile.
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