How to determine the speed of the ball mill barrel?
Date:2020-03-02 11:33:12
Author:admin
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241
Generally, the values on the technical parameters of the ball mills we have marked are directly marked by engineering and technical personnel. As long as the customer operates according to the instructions above, there is no problem, but after all, life is not going according to your plan or planned track There are always times when we are out of orbit, when there are unpredictable or unexpected events in our lives, we need to have a certain initiative in order to turn the tide into safety, which requires us to know more about something. Today we mainly introduce how to set the barrel speed of the ball mill.
We all know that the speed of the ball mill barrel is an important parameter index in the work of the ball mill, and it is related to whether the ball mill can successfully complete the grinding task. Students who are familiar with physical mechanics and speed in middle school should know that when an object moves around a circle, it is subject to forces such as centripetal force, gravity, and friction. When the speed reaches a critical value, the upward force of the object is equal to the downward force. At this time, the object will move along with the cylinder, the higher the object, the higher the gravity, the heavier the gravity is. The downward force is greater than the upward force and the object will be thrown or dropped. When the ball mill is grinding, the object will be ground. The medium and material are objects that move around the circle, and the center of the ball mill barrel is the origin of the object movement.
How to calculate the critical speed of that ball mill?
Assuming that the ball mill is not affected by external factors, we know the mass of the grinding media and materials in the cylinder, the cylinder radius, and the center of the circle. It is easy to use the physical formula to obtain the ideal critical speed.
Is the critical speed calculated equal to the working speed of the ball mill? Ben should come to an end here, but the truth is not. After all, the critical speed is an ideal value calculated theoretically. The actual working speed of the ball mill is often limited by the transmission speed ratio and other conditions. It is difficult to reach the theoretical critical speed. Therefore, after repeated test verification, the ball mill The speed of the cylinder is determined as the ratio between the working speed and the critical speed is between 0.74-0.8, so there is still a certain gap between the barrel speed and the critical speed of the ball mill in actual work. This gap is the distance between ideal and reality.
