rod mill

Rod Mill

Rod mill is very similar to ball mill except for the use of steel rods as grinding media. Steel rods grind the ore by rolling and rotating in the rod mill. The feeding of rod mill is about 50 mm and the output particle size is between -4 and 35 mesh. Inquiry competitive rod mill price directly from rod mill manufacturers.

Rod Mill Price

Application Fields of Rod Mill

Application Fields of Rod Mill

Rod mills are one of the heavy equipment machinerys widely used for mine, cement, silicate products, steel slag, construction materials, refractory materials, fertilizers, glass, ceramics and other materials.

  1. Used for grinding rare metal ore

  2. Rod mill is applied to the gravity separation or magnetic separation plant of tungsten tin ore and other rare metal ores to prevent over-crushing.

  3. In the first grinding stage

  4. The production capacity will be larger and the efficiency will be higher if the rod mill is used for the first stage industrial grinding mill to grind materials from 20~6 mm to 3~1 mm in the two-stage grinding process.

  5. Cone crusher can be replaced for fine crushing

The short-head cone crusher can be replaced by the rod mill for fine crushing in some cases. Rod usage of rod mill is simpler and cheaper than a closed circuit formed by the short-head cone crusher and the sieve when processing 19-25 mm (or even 32 mm) to 6-10 mesh soft ores (especially viscous ores).

Advantages of Rod Mill

Advantages of Rod Mill

The rods have a screening effect on the materials in the process of movement, which can make the large particle material be lifted to the high position of each layer and concentrated to the place with strong crushing ability. Therefore, the high work efficiency and the low power consumption is obtained.

It is first crushed into coarse particles and second ground into smaller ones when the ore is ground by the steel rods, thereby the risk of over-crushing is reduced.

The surface contact of traditional ball mill is changed to rod mill liners contact by rod mill.

The coarse particles are sandwiched between rods and liner when the rod rotates and rises along with the liner, making the fine particles to pass through the gap of rods, which is conducive to crushing coarse particles, so the coarse particles are concentrated in the place where the grinding medium hits. So it is suitable for ores with different hardness (Mohs hardness 5.5~12) due to more uniform and lighter over-crushing rod mill product.

There are two devices which work at the same time is a fineness control device and a screening device for discharging inside the rod mill, so the particle size of the material produced by the rod mill can be adjusted according to the needs of user.

The size of ground particles can be ensured effectively because smaller mineral particles can be obtained by adjusting size.

Structure & Working Principle of Rod Mill

The rod mill is driven by the motor through the reducer and the surrounding large gear or by the low-speed synchronous motor directly through the surrounding gear to drive the shell rotation. The shell is equipped with the appropriate grinding medium steel rod. Under the action of centrifugal force and friction force, the grinding medium is lifted to a certain height and falls in the state of dropping or discharging. The grinding material is continuously into the shell by the ore feeder and is crushed by the moving grinding medium, the product is discharged out of the machine through the overflow and continuous force of the ore, so as to carry out the next working stage.


Features of Rod Mill

Features of  Rod Mill

Rod Mill Application

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