1、 Evident technology

　　This limestone crushing production line adopts the process of two crushing stages and one close circuit. The large jaw crusher will be used in the first crushing stage, and at the feeding end, the vibrating and screening feeder is used in order to ensure the cleanliness of aggregates. And the special crusher of gravel is put in the second stage and with the two cone crushers forming the closed circuit.

　　2、 High level of automation, convenient operation

　　The line is equipped with the advanced electrical control unit so it’s highly automated. The production process is simple and easy to operate, no person is required when it runs except the switching of the line and routine maintenance.

　　3、 Good quality with uniform product size

　　Having solved the problem that the finished sand grain type is not qualified by the traditional equipment, this line has advantages that the product size is uniform with good quality and the powder rate is lower, so it meets fully the National Highway materials requirement.

　　4、 Improved economic efficiency

　　Having overcame the weakness of higher cost caused by serious wear of the traditional equipment when it deals with the hard materials, this line is featured by its big processing capacity, high efficiency, low running cost and good economic benefit.

　　The production line is composed mainly by vibration feeder, jaw crusher, impact crusher, vibrating screen, belt conveyor, and central electrical control unit. In order to meet the different requirement, the cone crusher and dust collection device can be further equipped.The lump materials are fed evenly from the ore silo through vibration feeder into the jaw crusher for rough crushing, the crushed materials are sent then by belt conveyor in the impact crusher for further crushing. And the fine materials out of the impact crusher are sent also by belt conveyor to the screen to get the gravel of different sizes. The gravel which meet the grain requirement are sent to the product stack, and the unqualified ones come back in the impact crusher, thereby forming the closed circuit.