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Crusher Wikipedia 12 22 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 materials so they can be more easily disposed of or recycled or to reduce the size of a solid mix of raw materials as in rock ore so that Applications Primary crusher in mining quarry mixing and batching plant road and building construction highway railway and subway and water conservancy
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