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破碎是通过外力作用的破坏以克服连结固体物料质点之间的内聚力，将有用矿物矿块尺寸减小的过程。这一概念同样适用于磨矿，因为破碎被认为是为了得到大于smm的产品，而磨矿是为了得到小于smm的产四D口。选矿厂的破碎和磨矿是分选前的准备作业，而在破碎筛分厂和建筑用碎石生产
Crushing is the process of reducing the size of the useful mineral nuggets by the destruction of the external forces acting to overcome the cohesion between the solids of the joined solid material. The same concept applies to grinding because crushing is thought to yield products larger than smm, while grinding is to produce four D less than smm. Concentrator crushing and grinding is the preparation of pre-sorting operations, and in the crushing and screening plant and the production of gravel