When the number of revolutions is low, the ball in the ball mill is lifted to a lower height, and the gravity of the ball itself is rolled down from the top of the ball to the sloping state. At this time, the impact force of the ball is small, but the grinding effect is very good. Strong, the ore is mainly pulverized by grinding and grinding, and the grinding effect is high.
When the number of revolutions is high, the height at which the ball is lifted is also high. After the ball rises to a certain height, it leaves the cylinder and falls along the parabolic trajectory, and is in a throwing working state. The impact point has a large impact, the ore is mainly broken by impact, and the grinding efficiency is the highest.
When the number of revolutions of the mill exceeds a certain limit (the number of revolutions is high), the ball rotates without falling, and is in a centrifugal operation state. At this time, the ball has no impact and the grinding action is small to stop the grinding action.
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