Vertical mill is an ideal equipment for the grinding industry that
integrates crushing, drying, grinding, grading, and conveying. When
used for the preparation of coal powder, the product fineness can
meet industry and national standards.
1. The vertical mill has a large production capacity, which can
easily reach 10-150t/h with different models, fully meeting the
needs of large-scale coal powder preparation projects.
2. Strong adaptability of coal types: hydraulic loading,
accumulator buffering; Dry inside the mill, capable of grinding
high moisture coal.
3. Low energy consumption for powder grinding: The grinding method
of directly rolling and grinding materials on the grinding disc
using grinding rollers has low energy consumption, saving 30% to
40% of energy compared to ball milling systems.
4. Strong drying ability: The internal hot air directly contacts
the material, which has strong drying ability. It can save a drying
machine, land area, energy, and easily handle materials with
different humidity by adjusting the temperature of the hot air.
The reason why coal powder boilers become environmentally friendly
and efficient industrial thermal energy equipment is related to the
fineness of the fuel used. The more suitable the fineness of coal
powder, the faster the ignition and combustion, the smaller the
incomplete combustion loss of the boiler, the higher the boiler
efficiency, and the better its economic and environmental value.
Therefore, to improve the operational efficiency of coal-fired
boilers, one can start with the fineness of coal powder and use
high-performance grinding machines to grind and process the coal.
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, 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 picked up by the Jet stream at the wind ring at the
edge of the grinding plate. Large particles fall directly onto the
grinding plate for grinding again. When the materials in the
airflow pass through the dynamic and static separator, under the
action of the rotating rotor, the coarse powder falls onto the
grinding plate for grinding again. The qualified fine powder is
grinded together 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.
Parameter Table of Coal Vertical Mill
| 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 |
Engineering Cases
Engineering Design and Equipment Manufacturing Supply of HVM2800M
Vertical Pulverized Coal Preparation System
Processing material type: bituminous coal
Capacity: ≥ 80t/h
Product fineness: 200 mesh, 85% pass
