Overview of vertical raw material mill
Vertical raw material mill (also known as vertical roller mill) is an indispensable large-scale grinding equipment in modern industrial production, and is widely used in cement, electricity, metallurgy, chemical industry and other industries. Compared with traditional ball mills, vertical raw material mills have significant advantages such as low energy consumption, small footprint, and simple process flow, and have become the preferred equipment in the field of raw material grinding.
Working principle of vertical raw material mill
Vertical raw material mill (also known as vertical roller mill) is a high-efficiency large-scale grinding equipment, mainly used for raw material grinding operations in cement, electricity, metallurgy and other industries. Its working principle is as follows:
1. Feeding system: The raw material enters the center of the grinding disc through the air-locking feeding device
2. Grinding process: The grinding disc rotates and drives the grinding roller to crush the raw material
3. Classification system: The ground material is carried into the powder selector by the airflow for classification
4. Finished product collection: Qualified fine powder is collected by the airflow into the dust collector, and the coarse powder returns to the grinding disc for further grinding
5. Hot air system: Hot air can be introduced as needed for integrated drying and grinding operations
Key technical features
1. Multi-layer rolling and crushing: Using the material bed grinding principle, the crushing efficiency is 30-50% higher than that of the ball mill
2. Dynamic classification system: The rotor speed of the powder selector is adjustable to accurately control the fineness of the finished product
3. Energy-saving design: Compared with the traditional ball mill, it can save 20-30% of electricity
4. Low-noise operation: The working noise is ≤85 decibels, which is much lower than that of the ball mill
Comparison of main technical parameters
| Parameters | LM series vertical mill | Traditional ball mill | Advantage Comparison |
| Production capacity (t/h) | 10-200 | 5-100 | +100% |
| Power consumption (kWh/t) | 15-25 | 30-45 | -40% |
| Floor area | Small | Large| | Save 50% |
| Maintenance cycle | 6000 hours | 2000 hours | 3 times lifespan |
FAQ
Q: What are the key points for the maintenance of vertical raw material mill?
A: Focus on the maintenance of grinding rollers and grinding disc linings, regularly check the hydraulic system, and it is recommended to perform a comprehensive overhaul every 6000 hours.
Q: How to choose a suitable vertical mill model?
A: It is necessary to consider factors such as raw material characteristics, output requirements, and finished product fineness. Our engineers can provide professional selection services.
Q: What factors are related to the energy consumption of vertical mills?
A: The main influencing factors include raw material hardness, water content, finished product fineness requirements, and the mechanical efficiency of the equipment itself.
Vertical raw material mills are gradually replacing traditional ball mills with their efficient and energy-saving grinding principle. Baichy Heavy Industry has 20 years of experience in vertical mill research and development, providing a full range of vertical raw material mill equipment from 50t/h to 300t/h, which has been successfully applied to more than 300 project sites at home and abroad.
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