Crushing&screening equipments are machineries of crushing and classifying ores to required particle sizes through one or multiple stages crushing, and classify the materials by screening machines. Crushing and screening equipments are often combined to form a closed cycle of preliminary processing of the minerals in the ore dressing process, to prepare for subsequent grinding process. They also can form independent crushing and screening unit used for producing the artificial sand and aggregate. In the actual production activity, the appropriate crushing-screening equipments and techniques are selected according to the nature of the ore to achieve the required capacity.