Rod Mill

Process introduction

The rod mill also called steel rod mill, uses steel rods that are 10-15% shorter than the barrel length as the grinding medium. Rod mill design for the coarse grinding of various hardness of ore materials. When the rod mill is working, it is decelerated by the motor through the reducer and surrounding large gears or is directly decelerated by the low-speed synchronous motor through the surrounding large gears to drive the cylinder to rotate. The cylinder is equipped with appropriate grinding media—steel rods for grinding. The medium is lifted to a certain height under the action of centrifugal force and friction force and falls in a thrown or cascading state. The ground material continuously enters the inside of the cylinder through the feed port and is crushed by the moving grinding medium. And through the force of overflow and continuous feeding, the product is discharged out of the machine for the next process operation.

When rough grinding, if the product size is 1-3mm, the processing capacity of the rod mill is greater than that of the same specification ball mill. When used for fine grinding and the product size is less than 0.5mm, the grinding effect of the ball mill is greater than that of the same specification rod mill. That is, the products of ball mill tend to be more refined, while the products of rod mills are rougher but more uniform. Thus, when making a project scheme, ball mill and rod mill must be selected according to actual conditions.