SANYYO PCL-Series  crushers are characterized by a unique closed rotor design providing a higher production ratio with lower wear cost. PCL-Series VSI crushers have also been designed to minimize maintenance and improve all the adjustment operations. It is widely used in crushing of metal and nonmetal or cement, refractory material, bauxite, quartz, glass raw material, building aggregate, artificial sandy soil and all sorts of metallurgy slag, especially for middle hardness and special hardness material. PCL-Series Vertical Shaft Impact crushers provide unbeatable performance in secondary, tertiary, quaternary and shape correction applications. Features and values • Cubical shape of product • Durable structure • High reduction ratio for all minerals and aggregates • Little noise and dust pollution • Convenient performance,maintenance and installation PCL crusher's operating principle SANYYO PCL-series Vertical Shaft Impact Crusher works as below: the materials enter the crusher through feeder hopper, which is divided into two parts, one part entering into the rotating through the middle of distributor impeller at high speed, then is accelerated, and shot through the tunnels around the impeller by the speed of 60-75 meter/second. First the materials will impact with some materials fallen around distributor, hit on the crushing chamber together, then will be rebounded and impact on the top of the crushing chamber, changes its direction and goes down, forms continual material layers with the materials shot from the impeller. Therefore some materials will be impacted, crushed, milled twice or more times in the crushing chamber, then crushed materials will be discharged through the bottom. This can form a closed circulation system; in general, the sand forming percentage increases 20-30% and the product shape is good. Airflow self-circulation in the crushing chamber can eliminate the dust pollution well. It is the first choice in manufacturing sand and its shape correction industries.