What is washing away of soil from the 0-5mm fine material?

Under normal working conditions, the fine material (0-5mm) contains a lot of soil.

Washing and screening production process diagram
Washing and screening production process diagram

What is washing away of soil?

By reversing the hydraulic motor of the belt conveyor, changing the running direction, the material (0-5mm) is output in reverse. And enters the sand washing bucket wheel for desilting treatment by adding a chute.

Finished material (0-5mm)
Finished material (0-5mm)