Energy Saving Grinder Cement Raw Meal Vertical Grinding Mill 30-420t/H

30-420t/h Energy Saving Grinder Cement Raw Meal Vertical Grinding Mill​

Vertical mill, also known as roller mill, is widely used in large-scale material grinding and ultra-fine grinding processing in industries such as cement chemical, coal, and power. It is an ideal equipment for the grinding industry that integrates crushing, drying, grinding, grading, and transportation. When used for coal powder preparation, the fineness of the product can meet industry standards.

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 water are dried in the Contact process with hot gas to meet the required product moisture.

Specifications And Technical Parameters Of HVM Raw Vertical Mill

Advantages
1. Low cost: The system is simple, the layout is compact, and the floor area is about 50% of the ball mill. It can be arranged outdoors to reduce investment costs
2. High efficiency: During work, the grinding roller directly contacts the material on the grinding plate, resulting in low energy consumption
3. Strong drying: Due to direct contact between hot air and materials, the drying capacity is large and energy-saving is better.
4. Easy to operate, stable product quality, convenient maintenance, and good working environment

Solution
For the production of coarse powder, the vertical mill needs to adopt a powder concentrator structure with low resistance and anti-wear, rather than a powder concentrator with large blade density and complex rotor structure, resulting in unnecessary investment and increased production and maintenance costs. At the same time, due to the large number of large particles, necessary anti wear treatment and structural design of the powder selection machine need to be carried out to achieve reasonable powder selection output and energy consumption;

For the production of ultrafine powder, the selection of vertical mills should focus on the design and optimization of the powder selection machine. Due to the high resistance of powder selection at this time, it is necessary to strictly control the fineness while also preventing problems such as coarse particles, excessive wear of blades, and abnormal vibration caused by high internal resistance in the mill. Therefore, for materials with different product fineness requirements, it is necessary to calculate and analyze the material and gas flow in the vertical mill, especially in the powder concentrator area, based on the characteristics of the materials, in order to determine a reasonable structure of the powder concentrator (such as the form of the rotor and the number and angle of the blades, as well as the number and angle of the stationary blades), At the same time, necessary auxiliary measures should be taken to control (such as using a sealing fan for gas sealing, effectively controlling the coarsening of large particles).