Ball Mill VS Rod Mill

Ball mill and rod mill are used widely in plant and are compared by us. This text will analyze the two equipment in some aspect.

The grinding theory. Though used different medium (steel ball and steel rod are contained in a ball mill and rod mill), the working theory of ball mill and rod mill are similar. When the shell moves, the medium in the shell is raised and down which has an impact on ore. Some medium may close to the tube wall of the shell which can grind the ore. After a long time grinding, the material is ground to the correct size.

For details, the grinding theory of ball mill and rod are different in many ways. For the ball mill, the grinding force of steel ball to ore is less than the impact, because the contact area is small between balls and mineral. Thus, the throwing motion of ball can produce a large impact, but it needs a high rotate speed and has a higher power consumption. But for rod mill, the grinding effect is better which need a lower rotating speed and has a lower power consumption.

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