• Crushers and Equipment Technology in Mining | Crushers ...

    This breaker reduces the coal size by impact and also ... time for a particle in the crushing chamber and feed size of the particle.

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  • Crusher - Wikipedia

    A 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 of these were in the foundries, but as coal took hold the larger .... The Blake type jaw crusher has a fixed feed area and a variable discharge...

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