At present, most of the existing artificial sand production lines adopt the wet process. No matter what kind of sand washing machine is used, the outstanding disadvantage is that the loss of fine sand (particles less than 0.16mm) is serious, and some even more than 20%, which not only loses the output, but also seriously affects the grading of sand, resulting in unreasonable grading, coarse fineness modulus, greatly reducing the mechanical sand Product quality. Excessive discharge of fine sand will also cause environmental pollution.In order to solve the above problems, our company has developed HS series fine sand recovery device system, which is a world-class fine sand recovery device designed by our company based on the advanced technology at home and abroad and combined with the actual situation of our country. It is widely used in the sand aggregate processing system of hydropower station, glass raw material processing system, artificial sand production line, coal slime recovery of coal preparation plant and Environmental protection engineering (mud purification, etc.) can effectively solve the problem of fine sand recovery.