Crusher - WikipediaA crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. . Throughout most of industrial history, the greater part of crushing and mining part .. a screening machine which sorts and directs the product for further processing. . A jaw crusher uses compressive force for breaking of particle.buy copper mining portable crusher and screener wikipedia,Mechanical screening - WikipediaMechanical screening, often just called screening, is the practice of taking granulated ore material and separating it into multiple grades by particle size. This practice occurs in a variety of industries such as mining and mineral . Further down stream after crushing the material can pass through screens with openings or slots.
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