The feeding and discharge systems of the grinding mill should also be maintained.

The feeding and discharge systems of the grinding mill should also be maintained. The feeding device, such as a belt conveyor or a vibrating feeder, may experience issues such as misalignment or blockages. Regular inspection and adjustment of the feeding device can ensure a smooth and consistent feed of the ore into the mill.

The discharge system, whether it is a gravity - based or a pneumatic system, should be checked for any blockages or leaks. Blockages in the discharge system can cause a buildup of powder in the mill, leading to reduced efficiency and potential damage to the equipment.​
 

When troubleshooting non - metallic ore grinding mills, common issues need to be addressed. If the powder output is too coarse, it could be due to several reasons. One possibility is that the grinding media are worn out and not effectively grinding the ore.

Another reason could be that the classifier in the mill is not functioning properly, failing to separate the fine particles from the coarse ones. In such cases, the grinding media should be checked and replaced if necessary, and the classifier should be inspected and adjusted.​