Hi Louis . Thank you for your question!

　　The causes of low screening efficiency of circular vibrating screen may include:

　　1.Screen hole is blocked

　　2. The moisture content of the screened materials increases

　　3. Uneven feeding of sieve machine

　　4 .Screen surface material layer is too thick

　　5. The screen is not pulled tightly, and the transmission belt is too loose

　　Solutions:

　　1. Light screen machine load and clean screen surface

　　2. Change the inclination angle of the screen box

　　3. Adjust the feeding of the screen machine

　　4. Reduce feed of screen machine

　　5.Tension the screen mesh and tighten the drive belt.