Crushing & Screening

RBS has a number of crusher & screens in South Africa .Processing involves a series of crushing and screening stages designed to produce material with a specified range of sizes. In a hard rock quarry the primary crusher first roughly crushes material; secondary crushers then reduce the aggregate size and tertiary crushers produce the final size and shape of aggregate products. Crushed materials are sized by passing over various screens and /or classifiers. Within a sand and gravel quarry, the process is simpler involving washing and sizing and crushing oversized gravel material

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