Crusher - WikipediaA crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. .. Typically, crushing stages are followed by milling stages if the materials .. as it travels downward until it is small enough to escape from the bottom opening. . It has the advantage of reliable construction, high productivity, easy.benefits of opening a local miling crusher,Advantages and Disadvantages of Particle Size Reduction .Product 15 - 40 . (much like humans) and therefore benefit from a more highly .. roller mills used in the feed milling were abandoned flour milling roll stands, .. varying local conditions and ... the screen opening and grind size become smaller.
benefits of opening a local miling crusher