Causes of limestone ball mill blockage
Date:2019-09-29 09:28:24
Author:admin
Views:
185
The main function of the limestone ball mill is to re-grind the broken limestone to the target particle size. However, the ball mill often suffers from clogging and reduced output during operation. In response to this problem, we summarize the following reasons that may cause the ball mill to block, for your reference.
1. The ball ratio of the ball mill is unreasonable, so that the unqualified limestone powder frequently blocks the fine powder silo discharge board.
2. The steel ball is of poor quality and wears severely. The ball mill uses a steel ball that grinds pulverized coal. During the process of grinding the stone, the hardness of the limestone is severe, causing the steel ball to wear seriously.
3. The air box pulse dust collector does not work properly, and the system negative pressure cannot be maintained normally.
4. The quality of limestone is poor, and the fine powder silo is discharged from the raft. The milling system requires that the limestone particles be dry and clean, with a diameter of less than 25 mm and a CaCO3 content of more than 95%. If the limestone incoming material contains a large amount of impurities (such as rubber and iron), a large amount of impurities will accumulate at the ball mill outlet, causing blockage of the ball mill.
5. Limestone is stacked in the open air and has a high water content in bad weather. The desulfurization system does not have a special stone storage place. The stone materials are stacked in the open air. When it encounters rain or snow, the stone material is agglomerated by moisture and enters the ball grinding machine to form a paste. A large amount of wet stone is wrapped around the outer surface of the steel ball and steel tile, which will affect the normal operation of the ball mill, sometimes causing full grinding, resulting in a decrease in the output of the ball mill, or even forced to stop.
6. The adjustment of the high-efficiency frequency changer is not suitable, affecting the fineness of the limestone powder and the output of the ball mill.
7. Operation adjustments and maintenance are not in place. The operation personnel were not inspected and the responsibility was not strong. The system parameters were not found in time and the system was not adjusted. As a result, the ball mill was insufficiently fed and the system was faulty, which reduced the output of the ball mill. The maintenance personnel are not in place to maintain the equipment, the system has many defects, and the milling system cannot operate under the maximum output condition.
The reasons for the failure of the ball mill are probably the above. When you encounter such problems, you may wish to check the cause of the ball mill failure according to the above situation. Of course, in daily use, companies should also circumvent these things that may cause malfunctions. Do not cause damage due to improper use of the ball mill and thus affect production.
