High Grinding Efficiency Powder Raw Vertical Roller Mill For Cement
Production Line
Description
HVM series vertical grinding machine is an energy-saving advanced
grinding equipment integrating drying, grinding, grading and
conveying developed by Hefei Hengcheng through learning and
introducing foreign advanced technology and through more than 20
years of dedicated research and development.
Hefei Hengcheng HVM vertical mill has the advantages of high
grinding efficiency, low power consumption, large feed size, easy
adjustment of product fineness, simple equipment process flow,
small floor area, low noise, small dust, simple use and
maintenance, low operating costs, and low consumption of
wear-resistant materials.
This product has solved the problems of low output, high energy
consumption and high maintenance cost of ordinary industrial mills,
and its performance has reached the international advanced level.
【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 port, 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.
Specifications and Technical Parameters of HVM Raw Vertical Mill
| Model Specifications | HVM2500 | HVM2800 | HVM3400 | HVM3700 | HVM4200 | HVM4500 | HVM4800 | HVM5100 | HVM5600 |
| Grinding Table Median Diameter(mm) | 2500 | 2800 | 3400 | 3700 | 4200 | 4500 | 4800 | 5100 | 5600 |
| Capacity(t/h) | 85-100 | 130-160 | 190-240 | 240-300 | 320-400 | 400-500 | 440-550 | 550-670 | 600-730 |
| Raw Material Moisture | ＜10% |
| Raw Meal Fineness | R0.08＜12% | R0.08＜14% |
| Raw Meal Moistrue | ≤1% |
| Main Motor Power(kW) | 800/900 | 1120/1250 | 1800/2000 | 2500/2800 | 3150/3350 | 3800/4200 | 4200/4500 | 5000/5400 | 5600/6000 |
| Illustrate | Re:Raw materials bond index≤13kWh/t | |
Technical advantages and characteristics
High grinding efficiency
The grinding efficiency is high, and the energy consumption is low.
Compared with ball milling, the energy consumption is 40 - 50%
lower. The single machine production capacity is large, and low
valley power can be used.
High degree of automation
PLC full-automatic control system is adopted, and remote control
can be realized, which is easy to operate, convenient to maintain
and reduce labor costs.
Stable product quality
The material stays in the mill for a short time and reduces
repeated grinding. The product has uniform particle shape, narrow
particle size distribution, good fluidity, strong adaptability, and
low iron content, high whiteness and purity.
Low operation and maintenance costs
The grinding roller can be turned out of the machine by hydraulic
device, which is convenient for maintenance. The roller sleeve of
the grinding roller can be used upside down to extend the service
life of the wear-resistant material, and the wear is low. The
lining plate of the grinding roller and the grinding plate is made
of special materials, and the service life is long.
Low noise and environmental protection
The whole system has small vibration and low noise. The whole
sealed negative pressure operation system and the gas box pulse
dedusting system are adopted. There is no dust overflow, and the
dust-free workshop can be basically realized.
Strong drying capacity
The hot air is directly connected with the material in the mill.
The drying capacity is strong, and the feed moisture can reach up
to 15%. No additional dryer is required, saving equipment
investment cost and energy consumption cost.
High reliability
The grinding roller limit device is adopted to avoid the severe
vibration of the mill due to material breaking. The new type of
grinding roller sealing device is adopted, which is reliable and
does not need a sealing fan. It further reduces the oxygen content
in the mill and has excellent explosion suppression performance.
Low comprehensive investment cost
It integrates crushing, drying, grinding, grading and conveying.
The process flow is simple, the structure layout is compact, and
the floor area is only 50% of that of ball mill. It can be arranged
in the open air, and the construction cost is low, which directly
reduces the investment cost.
