Vertical grinding machines (also known as calcite micro powder mills, calcite micro powder mills, calcium carbonate micro powder mills, talc micro powder mills, barite micro powder mills, gypsum micro powder mills, marble micro powder mills, feldspar micro powder mills, fluorite micro powder mills) are mainly suitable for processing ultrafine powders of non flammable and explosive brittle materials with medium to low hardness and Mohs hardness ≤ 6 levels, such as calcite, chalk, calcite, carbon black, kaolin, etc More than 100 types of materials are used, including bentonite, talc, mica, magnesite, illite, pyrophyllite, vermiculite, sepiolite, attapulgite, rectorite, diatomaceous earth, barite, gypsum, alum, graphite, fluorite, phosphate rock, potassium ore, pumice, etc. The particle size of fine powder products can be adjusted between 325 to 3000 mesh, and the production can reach 0.4 to 4.5 tons per hour.

Vertical roller mill is commonly used for vertical grinding. Its working principle is to apply a certain pressure to the grinding roller to grind the materials that are relatively evenly distributed on the rotary grinding plate. Because grinding the material layer can utilize the splashing power of a portion of the material during crushing, and has the characteristic of low energy consumption, vertical grinding belongs to medium pressure material layer crushing.

Working principle: The electric motor drives the grinding disc to rotate through a reducer, and the material falls into the center of the grinding disc from the feeding port. At the same time, hot air enters the grinding chamber from the air inlet. Under the action of centrifugal force, the material moves towards the edge of the grinding disc and is crushed by the grinding roller when passing through the circular groove on the grinding disc. The crushed material is carried up by the high-speed airflow at the edge of the grinding disc, and large particles directly fall onto the grinding disc for re grinding. When the material in the airflow passes through the dynamic and static separator, under the action of the rotating rotor, the coarse powder falls onto the grinding disc for re grinding, and qualified fine powder is discharged with the airflow, Collect in the powder collection device, which is the product. Materials containing moisture are dried during contact with hot gases to achieve the required product moisture.

Specifications And Technical Parameters Of HVM Gypsum Vertical Mill

Advantages of vertical mill:
1. Reliable performance
The new grinding roller sealing device has more reliable sealing performance, and the grinding roller limit device effectively ensures the severe movement caused by material breakage.
2. Single machine production capacity is large, energy consumption is more economical, and compared to ball mills, energy consumption is 40-50% lower.
3. Clean and environmentally friendly
The entire system has low vibration, low noise, overall sealing, and full negative pressure operation, which is a new energy-saving and consumption reducing technology.
4. Automated operations
PLC fully automatic control system, remote control, and easier operation.
5. Excellent quality of finished products
The finished product has good particle morphology, narrow particle size distribution, good fluidity, high whiteness and purity, which can enhance the competitiveness of the powder market.
6. Low civil engineering costs
The complete system has fewer equipment, a compact structural layout, and a small footprint. Compared to ball mills, it saves 50% and can be arranged outdoors, resulting in low civil engineering costs.
7. Easy to maintain
The grinding roller can be turned out of the machine using a hydraulic device, and there is a lot of space for replacing the roller sleeve liner and repairing the mill. The grinding roller and grinding disc liner are made of special materials, and the service life of the entire machine is longer.