Vertical Roller Mill

What it is applied to

VRMs are widely used for grinding limestone, clinker, slag, and pozzolan in cement production, offering 30-40% energy savings over ball mills. In mining, they process copper/gold ores, iron ore, and phosphate rock for efficient mineral liberation. In power/steel plants, VRMs pulverize coal and petcoke for fuel, Industrial minerals, they finely grind gypsum, barite, quartz, and talc for controlled particle sizes. Emerging uses include lithium, graphite, and carbon capture materials.

How it works

The material falls from the feeding port to the center of the grinding disc. Under the action of centrifugal force, the material moves from the center of the grinding disc to the edge at a constant speed. When passing through the grinding raceway, it is crushed by the grinding roller. The grinding force is provided by the hydraulic loading system. The material is directly crushed, and the fine-grained material is squeezed to form a material bed for intergranular crushing.

Drying and grinding are carried out at the same time. Under the action of the rotor blades, Coarse particles return to the grinding table for grinding (internal circulation), and the qualified fine powder is milled together with the airflow, and is collected by the system powder collector, which is the finished product.

Advantages

• High productivity and energy saving

  High grinding efficiency, low energy consumption, saving 30%-50% power consumption compared with ball mills; excellent roller plate structure design, double the service life.

• High degree of automation, simple operation and maintenance

  The fully automatic control system can realize remote control, which is simple and convenient.

• Product quality is stable and reliable

  The dynamic environmental protection powder separator is adopted, the particle size distribution is concentrated, the particle shape is good, the frequency conversion speed regulation, and the product fineness can be adjusted conveniently.

• Low comprehensive investment cost

  Due to the integration of grinding, grading, drying and conveying, a set of drying equipment is saved. It can meet the drying requirements of materials with different humidity.

case

- Gypsum grinding production line in Turkey

hemihydrate gypsum

Capacity: 150 t/h

- Jaw Crusher - Vertical Roller Mill- Vibrating Ccreen

We are very satisfied with the grinding work of this vertical mill. The output fineness meets our requirements and the machine runs well. In addition, FTM Machinery equipped us with an automatic alarm system and fault detection system, which effectively ensures the safety and stability of the production line.