What are the functions and classifications of ball mill bulkheads?

The role of the ball mill bulkhead and the function of classifying the ball mill bulkhead, on the one hand, isolate the size of the grinding body and adapt to the size of the material to be crushed, and prevent the large particle material from escaping out of the discharge end, on the other hand, in order to control the movement speed of the material in the mill, the bulkhead can be divided into a single-layer bulkhead plate and a double-layer bulkhead. There are two classifications of ball mill bin plates: a single-layer bin plate, and a single bin is an overflow discharge type that relies on the surface difference of the grinding material to make the material.

It consists of a grate plate and a center plate. B double-layer compartment has the function of forced material flow, which is not affected by the difference in material level, and is currently used in the form of FLS combined double-layer compartment plate. Its structure is composed of coarse sieve plate, blind plate, support plate, front plate, fine sieve plate, etc.

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The bulkhead plate of the ball mill is mainly used to grind ore in sections with a mill, which is generally divided into coarse grinding, medium grinding and fine grinding, and it is to block the flow of large materials and steel balls to the next bin!

Ball mill bulkhead plates utilize grate hole sizes or arrangements.

The basic functions of the bulkhead are silos, filter materials and ventilation, and the purpose of silo is to further plan the functions of each silo.

The first task of the compartment unit is to meet the requirements of the compartment. The steel balls of different diameters in the mill are separated to adapt to the reasonable principle of using large balls for coarse grain grade and small balls for fine grain grade in the material grinding process. At the same time, coarse particles are jammed to prevent them from moving from the front to the back.

Once the coarse particles run to the back warehouse, because there is no big ball in the back warehouse, it cannot be crushed and will run coarse, affecting the production and quality.

The bulkhead plate of the ball mill uses the size or arrangement of the grate hole to sieve the material, which can prevent large particles from entering the area with weak impact force. Otherwise, the uncrushed material blocks are piled up, which seriously affects the grinding effect, or is not finely grinded, resulting in unqualified product fineness, and preventing large particles of materials from channeling to the discharge end.

The size or arrangement of the grate holes of the bulkhead plate can control the flow rate of the material during the grinding process in the mill. The grate hole of the partition plate determines the filling degree of the material in the mill, which controls the grinding time of the material in the mill and the flow rate of the material in the mill. In the grinding process of the bulkhead plate of the ball mill, the size of the material decreases in the direction of the grinding tail, and the grinding body is required to start to be dominated by impact, and gradually transition to the grinding effect to the direction of the grinding tail.

The smaller the size of the grinding body, the greater its number, and the larger the surface area of the grinding body, the stronger the grinding effect. Therefore, professionals require that the size of the grinding body also decrease in the direction of the grinding tail. Bulkhead plates are used in multi-chamber mills to separate grinding bodies of different gradations or shapes.

The analysis and selection of materials of the ball mill is mainly the function of the bin plate, and the main role of the bin plate for the ball mill is as follows.

1. Separate the grinding body.

Those who have used the ball mill know that the ball mill ball specifications of each bin of the ball mill are different, this is because the role of each bin is different, and the function of the compartment plate is to divide the grinding body according to the situation of each bin. The average size of the grinding body in each bin is gradually reduced from the coarse grinding bin to the fine grinding bin, so as to meet the needs of large grinding body grinding large materials and small grinding body grinding small materials, and better play the grinding role of grinding body.

2. Control the flow rate of abrasive in the mill.

The gap in the bulkhead plate determines the final flow rate in the ball mill. Efficient grinding of the material is guaranteed.

3. Analysis of materials.

It can prevent excessive particles from entering the area with weak impact force, otherwise it will cause the accumulation of materials that cannot be crushed, which will seriously affect the grinding effect of the ball mill, or the grinding of unrefined materials will cause the fineness of the product to be unqualified.

Summary. The grinding head end lining plate should be selected with high toughness, impact resistance, and high hardness of anti-cutting materials, and medium carbon multi-alloy steel should be selected, and the service life can be twice as long as that of high manganese steel. For mills less than 3 meters, the single grinding head end liner should be thickened in the area where the wear is large.

For large mill grinding head end liners larger than 3 meters, it should be divided into 2-4 turns in the radial direction to reduce the size of a single grinding head lining, and high-chromium cast iron wear-resistant materials can be selected, and the service life can be increased by 3-4 times compared with high-manganese steel.

The bulkhead plate is not suitable for high manganese steel, because it is easy to produce plastic deformation, block the grate joint, and the work hardening is insufficient, and the life is short. Medium carbon multi-alloy steel and similar alloy steel materials should be selected, and the service life can be increased by 1-2 times compared with high manganese steel. The double-layer compartment grate plate can also be selected with high-chromium cast iron wear-resistant materials, and the service life can be increased by 3-4 times compared with high-manganese steel.

The grinding head end lining plate should be selected with high toughness, impact resistance, and high hardness of anti-cutting materials, and medium carbon multi-alloy steel should be selected, and the service life can be twice as long as that of high manganese steel. For mills less than 3 meters, the single grinding head end liner should be thickened in the area where the wear is large. For large mill grinding head end liners larger than 3 meters, it should be divided into 2-4 turns in the radial direction to reduce the size of a single grinding head lining, and high-chromium cast iron wear-resistant materials can be selected, and the service life can be increased by 3-4 times compared with high-manganese steel.

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Ball mill. The role of the bulkhead plate is very large, it is an important part of the output of the ball mill and the effect of the finished product, the ball mill produced by Henan Yigong Machinery is a new product, and the bulkhead plate of the ball mill is mainly a sorting material, including:

1. The function of the compartment plate is different, according to the situation of each warehouse, put.

Abrasive body. to divide it. Keep the average size of the grinding body in each bin by.

Coarsely ground. The silo is gradually reduced to the fine grinding chamber to meet the needs of grinding large materials for large grinding bodies and grinding small materials for small grinding bodies, so as to better play the grinding role of grinding bodies.

2. Control the flow rate of the abrasive in the mill, and the gap on the compartment plate determines the flow rate in the ball mill. Efficient grinding of the material is guaranteed.

3. The bulkhead plate of the ball mill can prevent the excessive particles from entering the area with weak impact, otherwise it will cause the accumulation of materials that cannot be crushed, which will seriously affect the grinding effect of the ball mill, or the unground materials will be grinded, resulting in unqualified product fineness.

I am Henan Yigong Machinery.

The four functions of the bulkhead plate of the ball mill: 1. Separate the grinding bodies of different specifications. In the grinding process, the grinding body is required to be arranged from large to small according to the logistics direction, the large ball is mainly used for impact crushing, and the small ball is mainly for grinding.

The compartment plate can roughly separate them to prevent the grinding body from channeling the bin and affecting the grinding effect. 2. The role of screening materials. Due to the arrangement of the grinding body from large to small, the particle size of the material in the grinding should also gradually decrease according to the flow direction.

After the cylinder is divided, if the large particles enter the fine grinding bin, they will not be able to be ground into fine powder in a limited time, and the grinding material will appear "coarse". The grate slit of the bulkhead plate can screen the material and prevent large particles from escaping to the fine grinding bin. Especially for open-flow tube mills, the screening role of the bulkhead plate is very important, and modern high-fine-tuning tube mills make full use of this.

3. The function of controlling the flow rate of materials. After the ball mill barrel is divided into silos, the material must reach the pre-set fineness in each silo, otherwise, the first matching mismatch will occur, which will affect the quality of the ball mill. Under the condition that the speed of the ball mill and the properties of the materials remain unchanged, the residence time of the materials in each silo is the main factor determining the fineness of the grinding materials after the grinding body in the mill is filled.

Whether the bulkhead plate is equipped with a lifting plate and the size of the grate on the plate are directly related to the speed of material flow in the mill, that is, the time for the material to stay in each bin can be controlled by the bulkhead plate. 4. Regulate the role of ventilation in the mill. Ventilation in the mill can discharge water vapor, heat and ultra-fine powder in time, which is crucial to improve the output and quality of the ball mill.

The total amount of grate joints and central holes on the bin plate represents the sum of the ventilation cross-sectional area and is the main factor affecting the air speed in the mill. Modern grinding concepts require ball mills to maximize the amount of ventilation inside the mill, which is very beneficial to the high productivity of ball mills, especially for open-flow tubular ball mills, which has been applied in recent years. If you are a customer of ball mills, or have any problems in the use of ball mills, we will provide you with professional solutions for ball mill applications for free!