In the operation of the cement ball mill, the temperature of the material in the ball mill itself and the mill is too high due to the working conditions. If it is not cooled for a long time, it will cause damage to the cement ball mill and also cause the quality of the abrasive to be unqualified and the performance to be reduced. Therefore, it is very necessary to do a good job of cooling the ball mill system. Here are three ways to cool down the cement ball mill system.
First, strengthen the heat dissipation of ball mill system
The grinding system has a large number of equipment and pipes, and the heat dissipation surface is large. The heat dissipation of the enhanced system is mainly use the surface of the system to intensify the cooling and heat dissipation, such as spraying atomized water to the outer wall of the separator and making the water tank along the outside of the screw conveyor. Tests show that the temperature of the cement is reduced but not obvious, and it is easy to cause water in the equipment. It should be used with caution.
Second, add grinding aids
The decrease of the temperature in the mill is beneficial to increase the production at the time of the station, and at the same time, the increase of the production at the station is beneficial to lower the cement temperature. For the high grinding system temperature caused by the phenomenon of grinding within the mill and the separator powder selection efficiency is reduced, through the use of grinding aids, reduce the degree of adhesion in the mill, can improve the efficiency of the separator, thereby reducing to a certain extent grind the temperature of the cement.
Third, strengthen the ventilation of ball mill
Strengthen the mill ventilation, can take away some of the heat, but according to the ball mill heat balance calculation, the heat taken away by the mill ventilation usually only accounts for 20% of the total exhaust heat of the mill. Although the ventilation within the mill can reduce the material temperature, the ventilation in the mill is restricted by the system's resistance, wind lock, and air leakage, and is also restricted by the fineness of the product. Therefore, there is a limit to reducing the temperature of the milled material by increasing the ventilation within the mill.
According to the actual situation on the site, the tail water spray, the water jet from the grinding head, or the water jet from the grinding head are used to spray the water at the same time. The atomized water sprayed into the mill is fully heat-exchanged with the grinding material and the grinding body. The internal heat of the mill is quickly converted into saturated gas, which is quickly discharged out of the mill along with the ventilation inside the mill, so that the mill can always be operated under normal temperature conditions, and the purpose of improving the quality of the cement can be achieved at the same time.
