Grinding ball mill

Ball mill is a commonly used grinding or grinding equipment, which is used for re-grinding after crushing materials. It can be widely used in cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal beneficiation, glass and ceramics and other production industries.

Whether it is dry or wet grinding, ball mill machine can easily cope with it and realize fine processing of various ores and other grindable materials.

Ball mill for grinding industry

1. Mineral processing industry

Ball mill is a commonly used grinding equipment in the mining industry. It can be used to grind metal ores, non-ferrous metal ores (such as iron ore, copper ore, gold ore), non-metallic minerals (such as limestone, bauxite, dolomite, etc.). It is used to grind ores to improve the efficiency of subsequent extraction and obtain the required particle size and mineral grade.

2. Building materials industry

In the cement manufacturing process, a large number of abrasive mechanical equipment are required. Ball mill is one of them. It can be used to grind cement clinker and mineral admixtures in cement to ensure the fineness and quality of cement. Ball mill can also be used to grind building materials such as gypsum and lime.

3. Chemical industry

In the chemical industry, ball mill grinding can be used to grind chemical raw materials, pigments, coatings, etc., to prepare various chemical raw materials and catalysts, to improve the physical and chemical properties of products, to help promote chemical reactions, and to improve product quality and profits.

4. Ceramic industry

Ceramic products need to go through a multi-step production process, among which grinding is a very important step. Grinding ball mill is used to grind ceramic raw materials, such as feldspar, quartz, etc., to meet the production requirements of ceramic products and improve product quality and production efficiency.

5. Glass industry

The production of glass products requires a large number of grinding processes. Ball mill is a commonly used abrasive mechanical equipment in the glass industry. It can be used to grind glass raw materials and waste glass to ensure the transparency and quality of glass to improve product quality and production efficiency.

6. Food industry

In food processing, raw materials often need to be ground into smaller particles. Ball mill is a reliable processing equipment that can be used to grind various food raw materials such as grains and spices.

7. Metallurgical industry

In the metallurgical industry, ball mill can be used to grind metallurgical raw materials and metallurgical waste to obtain the required particle size and chemical composition, providing conditions for subsequent metallurgical processes.

8. Refractory materials

Such as corundum, mullite, sillimanite, etc. These materials usually need to be ground into fine powder for making refractory bricks or other refractory products.

Ball milling machine components

The ball mill is mainly composed of the feeding part, discharging part, rotating part, transmission part (including reducer, motor) and other main parts. In addition, it also includes the main bearing, cylinder part, base part, as well as many other parts such as jacking device, coupling, hydraulic coupling, slow transmission device, etc.

The lubrication and electronic control system also provide strong guarantee for the stable operation of the equipment. These parts work together to ensure that the ball mill can complete the material grinding task efficiently and stably.

How does a ball mill grind?

The working principle of a ball mill is mainly to use the impact and grinding of grinding bodies (usually steel balls, steel columns or steel rods, etc.) on materials to grind the materials into fine powder. When the ball mill is started, the cylinder begins to rotate around the horizontal axis. Due to the inertial centrifugal force, the grinding bodies in the cylinder are tightly attached to the lining surface of the inner wall of the mill cylinder and rotate with the cylinder.

When the grinding body rotates to a certain height with the cylinder, its own gravity exceeds the centrifugal force, and the grinding body will break away from the inner wall of the cylinder and fall freely along a parabolic trajectory. The falling grinding body is like a projectile, crushing the material in the cylinder with a large impact force. This throwing motion is one of the main ways for a ball mill to grind materials.

In addition to the throwing motion, the grinding body will also slide and roll during the rotation of the cylinder. This relative motion causes continuous friction between the grinding body, lining and material, grinding the material and further grinding the material.

The feeding and preliminary crushing of materials are achieved through the feeding device, and the ground materials flow slowly from the feeding end to the discharging end by virtue of the height difference of the material surface between the feeding end and the discharging end, and finally complete the grinding operation and are discharged from the discharging end.

Types of ball mill for grinding

Based on different working principles and structural characteristics, ball mills can be divided into many types. Common ones include cone overflow ball mill, grid ball mill, wet ball mill, planetary ball mill, etc. Each type of ball mill has its own unique characteristics and application range.

For example, cone overflow ball mill is often used for fine grinding; cone grid ball mill is suitable for grinding ores with coarse particle size; wet long cylinder ball mill is mainly used for grinding operations in cement plants, etc.