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steel ball Movement of the ball mill in the form of movement

Ball mill rotating cylinder so that the internal movement of the grinding media, resulting in grinding ore. There are many similarities between the movement of the grinding media inside them and the steel ball is divided into three types of movement in the operation of the mill.

1.steel ball in the ball mill in the form of diarrhea movement.

When the speed of the ball mill is low, the steel ball inside the ball mill body rises up to a certain height against the barrel wall of the mill, and falls due to its own gravity. In this process, the steel ball is mainly abrasive and suitable for fine-grained materials. Practice has proved that the role of steel ball and ore in this process is able to achieve grinding effect. steel ball form of movement shown in Figure 1.

2.steel ball Parabolic movement in the mill.

As the speed of the ball mill increases, the steel ball rises to a certain height against the inner wall of the ball mill, and finally the steel ball falls in the form of a projectile. The process of forming a huge impact directly hit the ore, to overcome the sub-molecular force within the ore and broken, the main impact of grinding to impact, suitable for coarse-grained ore. Practice shows that the process of steel ball form of movement is able to achieve good grinding effect. steel ball form of exercise shown in Figure 2.

3.steel ball Centrifugal motion occurs in the mill.

As the ball mill speed increases, when the speed of the ball mill exceeds the critical speed of the steel ball, the steel ball and the mineral material in the ball mill will cling to the inner wall of the mill at this time, no catharsis and falling motion occur, and centrifugal movement occurs Figure 3), at this time there is no relative movement between steel ball and mineral material, will not play the grinding effect. Therefore, the grinding process should avoid the occurrence of this situation, otherwise it will cause a great waste of energy.

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