Generally, the feed pressure of the LUM ultrafine vertical mill should be stable as required, and no large fluctuations should occur, otherwise it will damage the performance of the equipment and affect its classification effect.

The large fluctuation of the feed pressure is usually caused by the lack of the pump feeder due to the drop of the pump tank liquid level or the air traction, or the blockage of sundries in the pump.

If the LUM ultrafine vertical mill has a drop in feed pressure after long-term operation, it is mainly caused by pump wear.

If the feed pressure fluctuation is caused by the drop of the pump tank liquid level, it can be adjusted by increasing the liquid level, or closing one or two cyclones, or reducing the pump speed;