Low Cost Investment Raw Material Vertical Roller Mill / Raw Meal VRM Mill

Description:

HVM raw material vertical mill is a grinding equipment integrating fine crushing, drying, grinding, powder selection and transportation. It is widely used for grinding various solid materials in cement, building materials, power, metallurgy, chemical industry, non-metallic ore and other industries.

The vertical mill has the advantages of high grinding efficiency, low power consumption, large feed particle size, easy adjustment of product fineness, simple equipment process, small floor area, low noise, low dust, simple use and maintenance, low operation cost, and low consumption of wear-resistant materials.

[Application Field]

Grinding and processing of non flammable and explosive materials with humidity less than 6% and Mohs hardness less than 7 in building materials, chemical industry, metallurgy, coating, papermaking, rubber, medicine, food and other fields.

【Applicable Materials】

Steel slag, water slag, graphite, potassium feldspar, coal, kaolin, barite, fluorite, talc, petroleum coke, lime calcium powder, wollastonite, gypsum, limestone, feldspar, phosphate rock, marble, quartz sand, bentonite, graphite, manganese ore and other non-metallic mineral materials with hardness below Mohs 7.

Specifications and Technical Parameters of HVM Raw Vertical Mill

[Working principle]

The motor drives the grinding plate to rotate through the reducer, the material falls in the center of the grinding plate from the feed inlet, and the hot air enters the mill from the air inlet. Under the action of centrifugal force, materials move towards the edge of the grinding plate. When passing through the circular groove on the grinding plate, they are crushed by the grinding roller. The crushed materials are carried away at the edge of the grinding plate by the high-speed airflow at the wind ring. Large particles directly fall onto the grinding plate for re grinding. When the materials in the airflow pass through the dynamic and static separators, under the action of the rotating rotor, the coarse powder falls onto the grinding plate for re grinding. The qualified fine powder is grinded together with the airflow, The product is collected in the powder collecting device. Materials containing water are dried in the process of contacting with hot gas to reach the required product moisture.

[Main Structure]

The main structure of the mill is composed of separator, grinding roller device, grinding disc device, pressurizing device, reducer, motor, shell, etc. The separator is an important part to determine the fineness of the grinding products. It is composed of a speed adjustable transmission device, a rotor, a shell, a coarse powder blanking cone, an air outlet, etc. It is an energy-saving and fast powder selection device. The grinding roller is the main part for rolling and grinding materials. It is installed on the bending arm of the mill. Under the action of external force, it is tightly pressed on the materials of the grinding plate. Driven by the grinding plate, the grinding roller rotates accordingly, so that the materials are crushed. The grinding plate is fixed on the output shaft of the reducer. The upper part of the grinding plate is the material bed. There is an annular groove on the lining plate of the grinding plate. The material is crushed by the grinding roller in the annular groove. The pressurizing device is a component that provides the grinding pressure of the grinding roller. It is composed of a high-pressure oil station, a hydraulic cylinder pull rod, an accumulator, etc. It can apply sufficient pressure to the grinding roller to crush materials. The reducer is the main part to transmit power, and the speed of the grinding plate is the speed of the reducer output shaft.

[Performance characteristics]

1) High grinding efficiency and low power consumption;

2) Less metal consumption per unit product;

3) The grinding machine has low noise;

4) Negative pressure operation, less dust pollution;

5) The process flow is simple, and the functions of material grinding, drying and powder selection are completed at the same time;

6) Small floor area, compact layout, light weight of system equipment, low investment in civil construction.