Vertical roller mill

Petroleum and Gas

Vertical mill, also known as roller mill, is widely used in large-scale material grinding and ultra-fine grinding processing in cement chemical industry, coal, and other industries. It is an ideal equipment for grinding industry that integrates crushing, drying, grinding, grading and transportation. Mineral slag micro powder is a kind of superfine obtained by grinding high furnace slag, which has ultra-high activity and is used as high-quality admixture for cement and concrete. It is a new type of green building. The vertical mill for mineral slag powder is a special equipment for grinding preparation of mineral slag powder.

The structure of the vertical mill mainly includes the following parts:

Grinding table: It consists of a guide ring, a wind ring a material retaining ring, a liner plate, a disk body, a scraper plate, and a lifting device, which together constitute the complete structure of the grinding table.

Inding roller: The roller sleeve of the grinding roller is a wear-resistant part, so it needs to have sufficient toughness and abrasion resistance to ensure its reliability during longterm use.

Air classifier: This is a key part in the vertical mill, mainly responsible for the separation of coarse and fine powder. The air classifier can be divided into, dynamic, and high-efficiency combined types, each with its unique working principle and application scenarios.

Pressure device: Usually, hydraulic devices and accumulators are used to the necessary pressure for the grinding table, thus ensuring the effective crushing of the material.

Monitoring device: It includes shaking arm monitoring and vibration monitoring, which is used to the working state of the vertical mill in real time to ensure its safe and stable operation.

Transmission device: It consists of an electric motor and a reducer, and responsible for driving the rotation of parts such as the grinding table and the air classifier.

Spray water system: It is mainly used to reduce the temperature of the material and the material layer, prevent the material from overheating or caking, and affect the crushing effect.

Coarse powder external circulation system: The coarse powder is returned to grinding table for re-crushing through the hoist, realizing the recycling of materials.