1. Working principle
The rod mill is mainly composed of a cylinder, steel rod, motor, reducer and other components. The cylinder is equipped with a steel rod as a grinding medium, and the material enters from one end, passes through the impact and grinding of the steel rod, and is discharged from the other end. When the steel rod rolls inside the cylinder, it has an impact and grinding effect on the material, causing it to gradually break.
2. Main features
Uniform particle size: Due to the linear contact of steel bars, the material particles ground by the bar mill are relatively uniform, and there is less over crushing phenomenon.
Suitable for rough grinding: Rod mills are commonly used for rough grinding operations and are suitable for processing materials with high hardness.
Simple structure: The device structure is relatively simple and easy to maintain.
Stable operation: The rod mill runs smoothly with low noise.
3. Application Fields
Mining industry: used for grinding metal ores such as gold, copper, and iron.
Building materials industry: used for grinding materials such as cement and limestone.
Chemical industry: used for grinding chemical raw materials.
Metallurgical industry: used for material crushing before metal smelting.
4. Difference from ball mill
Grinding medium: The rod mill uses steel rods, while the ball mill uses steel balls.
Particle size control: The material ground by the rod mill has a more uniform particle size, suitable for rough grinding; The ball mill is suitable for fine grinding.
Scope of application: Rod mills are suitable for processing materials with high hardness, while ball mills are suitable for processing materials with low hardness.
5. Selection and maintenance
Selection: Choose the appropriate rod mill model based on factors such as material hardness, particle size requirements, and processing capacity.
Maintenance: Regularly check the wear of steel bars and replace them in a timely manner; Keep the lubrication system running normally and avoid equipment overheating.
6. Common Problems
Steel rod wear: Steel rod wear can affect grinding efficiency and needs to be replaced regularly.
Equipment vibration: It may be due to uneven distribution of steel bars or damaged bearings, and should be promptly investigated.
Uneven discharge particle size: It may be due to inappropriate steel rod length or excessive feed volume, and parameters need to be adjusted.
