Mining Ore Crushing Equipment Expert

Henan Province, China

Zhengzhou West Industrial Zone,451200

+86 1830843555

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Rod mill

MoleDive One-Rod millcrusherolution Production

Working principle of rod mill:
The grinding body of the rod mill is round steel, and the iron ore is crushed by the working pressure and grinding force of the round steel. When the rod hits iron ore hard, the coarse particles are crushed first, followed by the smaller ones; The middle of the rod and the rod is line contact, and the middle of the ball and the ball is point contact, so when the rod rotates up along the wall of the cylinder, during the clip of the coarse grain, similar to the bar sieve effect, so that the fine sand from the rod seam according to, which is also beneficial to crush the sand and concentrate the coarse grain in the area where the grinding mineral is severely hit, less than broken.

Raw Materials

MoleDive Lithium Rod millGuide

1.Working principle of rod mill?

Rod mill is an asynchronous motor through the reducer and pinion gear connection, directly drive the surrounding gear to decelerate and rotate, drive the rotary part to rotate, the cylinder is equipped with the appropriate grinding medium – steel rod, grinding medium under the action of centrifugal force and friction, the material to be ground from the feeding part into the cylinder continuously, is crushed by the moving grinding medium, And through the power of overflow and continuous feeding, the product is discharged from the machine to carry out the next process.

2. What is the screening process of lithium ore?

The mill is mainly composed of motor, main reducer, drive part, barrel part, main bearing, slow drive part, feed part, discharge part, ring seal, thin oil lubrication station, size gear jet lubrication, foundation part and so on. The main reducer has parallel shaft and hard tooth surface

3..Rod mill types have those?

There are three kinds of universal rod mills
1. Overflow rod mill;
2. End discharge rod mill around;
3. Discharge rod mill around the center.
Overflow rod mill is the most common application, the product particle size is finer than the other two, generally used to grind the broken product, and then supply the ball mill to use, the product particle size is 2 to 0.5 mm.
The end peripheral discharge rod mill is generally used as dry grinding, the product particle size is coarse, this rod mill can also be used as wet grinding, using the peripheral discharge rod mill can obtain a high gradient and good flow rate, the product particle size is 5 to 2 mm.
The center peripheral discharge rod mill can be used for wet and dry type, the product particle size is coarser, the material is fed from both ends of the rod mill, the grinding process is short, and the product is quickly discharged, the gradient is high, and the sand is too fine. This type of rod mill is mainly used in the aggregate industry to produce sand and stone.
In order to prevent rod milling and entanglement, it is generally recommended that the ratio of rod grinding length to the inner diameter of the rod grinding machine is 1.4 to 1.6. When this ratio is less than 1.25, the possibility of entanglement increases dramatically, so it cannot be less than 1.2. When the diameter of the rod mill is greater than 3.8 meters, the efficiency and quality of the mill rod should be carefully considered.
The material of the rod mill is generally fed into the funnel, and in order to obtain normal flow, the bottom of the feed hopper should be 1.5 meters higher than the center of the rod mill. The speed of the rod mill is generally 60~68% of the critical speed, not more than 70%, the speed of the table can make the rod mill roll step by step, too high speed makes the rod throw phenomenon, too low speed reduces the output.
The overflow rod mill can be equipped with a rotary screen at the discharge end to remove the debris of the mill rod and catch the large material that runs out. The discharge end and can be closed in a cell manner. A door shall be provided at the end of the chamber for loading and unloading of grinding rods.
Rod mill has dry and wet two forms to choose from, the user can choose according to their actual situation. For processing quartz sand, dolomite, monazite and other products, the mill can be equipped with a magnetic separator to remove iron