Solutions for Hydrocyclone Blockage
June.16,2026
Determining if a hydrocyclone is blocked
Diagnosis is primarily based on observing the flow of the overflow and underflow during operation. Indications of a blockage include: the appearance of significant coarse particles in the overflow; a reduction in overflow and underflow rates (or a complete cessation of underflow); the discharge of underflow (sands) in a solid column shape; or prolonged, violent vibration of the unit.
The following solutions address these blockages:
1. If the underflow rate decreases or stops completely, the underflow discharge port is likely blocked; the flange must be removed to clear any debris from the port.
2. If both overflow and underflow rates decrease, the feed inlet is likely blocked; the feed valve to the affected hydrocyclone should be closed, the unit dismantled, and the obstruction removed.
3. To prevent blockages, install screening or filtering devices in the feed tank to catch coarse material and debris. Additionally, the feed tank should be drained promptly during shutdowns to prevent blockages caused by sedimentation or excessive slurry concentration upon restarting.
