200 Mesh Anthracite Pulverizer 20tph Vertical Coal Mill Equipment
Efficient Energy-Saving
Product Introduction:
As a large-scale grinding equipment, vertical mills are widely used
in industries such as building materials, power, metallurgy,
chemical industry, and non-metallic minerals. Hefei Hengcheng HVM
vertical mill adopts international vertical mill technology,
integrating crushing, drying, grinding, powder selection, and
conveying, ensuring production continuity and stability, and
improving grinding efficiency. Hefei Hengcheng can customize
according to the material characteristics of customers, with
flexible configurations to meet their personalized grinding needs.
Capacity: Different materials result in different processing capacities.
Please refer to the technical parameter table below for details
Applicable materials: Vertical roller mill mainly grinds raw materials, clinker, mineral
powder, slag, granulated blast furnace slag, limestone, coal
powder, coke powder, coal gangue, fly ash, volcanic ash, gypsum,
calcite, pyroxene, clay, sand, bauxite, silica fume, etc.
Application industries: cement chemical, coal, power and other industries.
Process Introduction
1. The raw coal is sieved through a grid screen in the raw coal
yard and falls onto a belt conveyor. After being removed by an
electromagnetic iron remover, the belt conveyor sends the raw coal
to the raw coal bin for storage.
2. After the pulverization system has been started, open the rod
valve at the bottom of the raw coal bin, start the sealing metering
tape to feed the coal vertical mill, and the raw coal enters the
coal vertical mill for drying and grinding.
3. The hot air or cement production line exhaust gas from the hot
air stove is drawn by the system fan and enters the coal vertical
mill. After sufficient heat exchange with the raw coal being ground
in the mill, the coal powder is picked up and sorted at the powder
selection machine. Coarse coal powder with poor fineness is re
ground on the grinding disc for grinding. Qualified coal powder is
collected by the explosion-proof gas box pulse dust collector with
the airflow and discharged into the coal powder bin through the
grid wheel.
4. The impurities in the raw coal, such as some coal gangue, metal
blocks, etc., are discharged from the mill through the air ring and
slag discharge port.
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 |
Structural features:
1. The foot shaped grinding disc and tire shaped roller sleeve used
in the coal vertical mill are more suitable for coal powder
grinding.
2. The grinding roller bearings do not require special sealing. The
grinding roller device adopts a pair of self-aligning roller
bearings, and the bearing sealing chamber extends to the outside of
the machine casing, without coming into contact with dusty gases.
Therefore, a simple seal can prevent dust from entering the
grinding roller bearings, without the need for a sealed fan.
3. The transmission part of the mill does not require auxiliary
transmission devices.
4. The slag removal 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.
Product advantages:
1. Large production capacity, low energy consumption, green and
environmentally friendly.
2. The roller sleeve can be flipped over for use, which is
beneficial for increasing the output of coal mill, reducing wear,
and extending 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 coal powder in the mill and ensure the safe use of the
equipment.
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
