The grain size of the aggregate should be cubic, the needle-like content should be relatively low. It should have a certain compressive strength and reasonable gradation. It directly affects the important characteristics of sand and stone aggregate. High gradation accuracy can effectively guarantee the quality of concrete and improve the quality of construction projects.

To improve the quality of aggregate, screening system is indispensable. This circular type horizontal vibrating screen for sand gravel aggregates is more commonly used. It is a new type of vibrating screen which has the characteristics of long screen length, high screening precision, many screening specifications and high screening efficiency. It can be used not only for screening fine materials in raw materials, but also for screening materials after crushing of primary crushing equipment and secondary crushing equipment. Therefore, screening of sand aggregate is particularly suitable. It is more superior to meet the needs of finished aggregate size and has been widely used in sand aggregate screening.