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90t / h Large Output Coal Grinding Equipment Coal Vertical Mill
Working principle of coal vertical mill:
The raw coal falls to the center of the grinding disc through the
feeding pipe, and the grinding disc rotating at a constant speed
disperses and flattens the raw material outwards evenly with the
help of centrifugal force to form a material bed with a certain
thickness. crushed and crushed.
Under the continuous driving of centrifugal force, the material continuously moves to the outer edge of the grinding table. When the material leaving the grinding table encounters the hot gas entering the mill through the wind ring, it rises and enters the separator through the middle shell of the mill. During this process The material in the medium and the hot gas conduct sufficient heat exchange, and the water is quickly evaporated.
The powder separator controls the particle size of the finished products at the outlet of the roller mill. The particles larger than the specified size are separated and fall back to the grinding disc. The materials that meet the fineness requirements enter the finished product warehouse through the powder separator.
Technical DATA
Specification | HVM1250 | HVM1300 | HVM1500 | HVM1700 | HVM1900 | HVM2200 | HVM2400 | HVM2800 |
Grinding table median diameter(mm) | 1250 | 1300 | 1500 | 1700 | 1900 | 2200 | 2400 | 2800 |
Capacity(t/h) | 10-15 | 10-15 | 14-22 | 20-28 | 26-35 | 35-45 | 45-56 | 70-90 |
Coal Moisture(%) | <15 | |||||||
Coal Power Fineness(%) | R0.08=2-12 | |||||||
Coal Power Moisture(%) | ≤1 | |||||||
Main Motor Power(kw) | 110/132 | 160/185 | 220/250 | 315/355 | 400/450 | 450/500 | 560/630 | 900/1120 |
Product advantages:
1. Large production capacity, low energy consumption, green and
environmental protection.
2. The roller sleeve can be turned over for use, which not only
helps to increase the output of the coal mill, but also reduces
wear and prolongs its service life.
3. Install explosion-proof devices to ensure safe production. There
is an explosion-proof valve on the upper shell to prevent the
explosion of pulverized coal in the mill and ensure the safe use of
the equipment.
Structural features:
1. The foot disc-shaped grinding disc and the tire-shaped roller
sleeve used in the coal vertical mill are more suitable for coal
grinding.
2. The roller bearing does not need special seal. The grinding
roller device adopts a pair of self-aligning roller bearings. The
bearing sealing cavity extends out of the casing and does not come
into contact with the dust-containing gas. Therefore, as long as a
simple seal is required, the grinding roller bearing can be
prevented from entering dust, and the fan does not need to be
sealed.
3. The transmission part of the mill does not need auxiliary
transmission device.
4. The slag discharge part is simple. The coal vertical mill has
less slag discharge, and the slag discharge port is equipped with a
cover plate, so there is no need to install a slag discharge valve.