Deep Study about Medium Filling Rate of Ball Mill

In order to improve the yield of the ball mill, we should not only focus on the technological factors and mechanical factors, but also ensure the effective management and control of the ball mill. The main purpose of the management is to prevent the abnormal operation situation of the machine to achieve the fine operation, low consumption and high yield of the equipment. For the medium movement of the ball mill, the medium filling rate and the rotational speed are two very important factors. In terms the impact of the two factors on the ball mill, many scholars at home and abroad have done a lot of researches about the factors and they have got some conclusions. However, these conclusions are almost based on certain test and the formula calculation. This article will explore the impact produced by these two factors on the ball mill by using discrete element numerical simulation method.
In fact, the media filling rate and the rotational speed of the ball mill together impact the ball mill. If we only analyze one of the factors, the results obtained are only one-sided. As a result, we should combine the two factors. In this way, we can get reasonable analysis results, which can be proved in the future analysis calculation.
The critical speed of the ball mil refers the instantaneous speed. In the changing process of the cylinder of the mill from slow to fast, the medium in the outermost layer of the mill does uniform circular motion with the inner wall of the liner of cylinder. The medium moves to the highest point but not falls down. When the mill is in the critical speed, the grinding media and the grinding materials in the outermost layer rotate with the mill. There is almost no relative impact. The critical speed of the mill is often regarded as a reference standard for the suitable rotational sped and the actual working rotational speed in the research of the ball mill. The domestic and foreign experts have done a lot of research work and the formulas are also numerous. The grinding media can be divided into dynamic and static, so the grinding media filling ratio is also can be divided into dynamic and static.
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