Check the ball mill trunnion for foreign matter and debris; check the trunnion for offsets, and check whether the trunnion is short of oil.

Check if the gearbox temperature is higher than usual. Check the coaxiality of the reducer and the motor.

Check the inside of the reducer for metal impurities; check the meshing performance of the gear; check the clearance between the reducer bearings; check the gears and bearings for excessive wear and damage; and whether the fixed screws are loose.

When the ball mill is running, if it is found that the sound inside the cylinder becomes sharp for quite a while, it is necessary to stop and check whether the lining is broken or damaged; check whether the ore is insufficient and check whether there is any other metal foreign matter in the cylinder.
 

If there is intermittent and dull shock inside the cylinder, it may be that a certain liner is detached; if the ball mill suddenly discharges the small steel ball and the ore slag, it means that the internal lattice plate is damaged.

Abnormal noise during ball mill operation is one of the most common problems in ball mill failure. It is mostly caused by loose parts in the mill. When you hear the ball mill has abnormal noise, stop feeding the mill. After the material in the mill is ground, stop the mill for inspection. First look at whether the lining bolts are loose, the loosening of the lining bolts will be impacted by the steel balls, so it will produce a strong sound, then look at the lubrication of the cylindrical rolling bearing is effective, the failure of the rolling bearing lubrication will cause the bearing to run poorly, and will also lead to the ball mill abnormal noise occurred inside. In order to prevent the ball mill from malfunctioning, after each continuous operation, technicians should be arranged for small-scale inspection and maintenance to kill the problem initially.