Vertical grinding mill | Suitable for mineral powder/cement/coal powder

Vertical Roller Mill (VRM) is a large-scale, efficient grinding equipment widely used in cement, power, metallurgy, chemical, and other industries. It is mainly used for grinding ore, coal, slag, and other materials.

Working Principle of Vertical Roller Mill

The material falls into the center of the grinding disc from the feed inlet and disperses to the edge under the action of centrifugal force. The grinding roller crushes the material under hydraulic pressure, and the fine powder after grinding is carried into the separator for classification by the airflow. The qualified products are discharged and collected with the airflow, and the coarse particles fall back to the grinding disc for further grinding.

Core advantages of vertical roller mills

1. High efficiency and energy saving

▪ Grinding energy consumption is 30%-50% lower than that of ball mills, which is especially suitable for large-scale production.

▪ Adopting the material bed grinding principle, the energy utilization rate is high.

3. Small footprint

▪ The vertical structure is compact and space-saving, making it suitable for scenes with limited space.

2. Strong adaptability

▪ It can handle high humidity (which needs to be dried) or high-hardness materials (such as slag and steel slag).

▪ By adjusting the parameters, it can meet different fineness requirements.

4. Environmental protection and low noise

▪ The fully enclosed system reduces dust spillage, and the noise is lower than that of the ball mill.

Vertical Roller Mill performance advantages

Industrial Roller Mill

1. High efficiency and energy saving, significantly reduced energy consumption

• Energy saving of 30%~50%: Adopting the material bed grinding principle (rolling and crushing), the energy utilization rate is much higher than the impact friction method of the ball mill.
• System integration: Integrates crushing, grinding, drying, and powder selection, reducing the number of equipment and power consumption in the intermediate links.

2. High grinding efficiency and excellent finished product quality

• High pressure grinding (50~300MPa): The material is crushed into powder between the grinding roller and the grinding disc, the particle distribution is uniform, and the fineness can be precisely controlled (80μm sieve residue 1%~15%).
• Dynamic powder selection: Built-in high-efficiency powder selection machine, real-time separation of qualified fine powder, avoiding over-grinding, and increasing production.

3. Strong adaptability and multi-functional integration

• Wide range of materials: Can handle cement clinker, slag, coal, limestone, etc. (Mohs hardness ≤7).
• High moisture compatibility: Direct hot air drying (allowing material moisture content of 15%~20%), eliminating the need for a separate drying process.

4. Environmentally friendly and low-noise, green production

• Dust emission <30mg/Nm³: Fully enclosed design + dust removal system, far below environmental standards.
• Noise 75~85dB: 20~30 decibels lower than the ball mill (90~110dB), reducing noise pollution.

1500

Vertical Roller Mill

15-48t/h

Cement industry: raw material grinding, slag micro powder preparation.

Metallurgical industry: steel slag, nickel slag, manganese ore grinding.

Coal industry: coal powder preparation (for power generation, metallurgy).

Non-metallic minerals: limestone, barite, calcite, and fine powder processing (400~2500 mesh).

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Working Principle of Vertical Roller Mill

Finished product fineness: 80-425 mesh