Hefei Hengcheng Industrial Equipment Technology Co., Ltd
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Professional High Efficiency Vertical Roller Mill For Limestone Plant
Description
Vertical limestone mill production equipment HVM vertical mill
[Feed particle size] 90mm
[Capacity] 6-80t/h
[Application field]: Grinding and processing of non flammable and explosive materials with humidity less than 6% and Mohs hardness less than 7 in building materials, chemical industry, metallurgy, coating, papermaking, rubber, medicine, food and other fields.
[Applicable materials]: Kaolin, barite, fluorite, talc, water slag, calcium lime powder, wollastonite, gypsum, limestone, phosphate rock, marble, potassium feldspar, quartz sand, bentonite, manganese ore and other materials with a hardness below Mohs 7.
HVM series vertical mill is an advanced grinding equipment with high efficiency and energy saving, which is developed by Hefei Hengcheng through studying and introducing foreign advanced technology and more than 20 years of dedicated research and development, integrating drying, grinding, grading and conveying.
Hengcheng HVM vertical mill has the advantages of high grinding efficiency, low power consumption, large feed particle size, easy adjustment of product fineness, simple equipment process, small floor area, low noise, low dust, simple use and maintenance, low operation cost, low consumption of wear-resistant materials, etc. It can be widely used in electric power, metallurgy, cement, chemical industry, non-metallic ore and other industries, mainly for grinding raw cement, clinker, lime powder for power plant desulfurization, slag powder, manganese ore, gypsum, coal, barite, calcite and other materials.
Technical Data
| Model | HVM1250 | HVM1300 | HVM1500 | HVM1700 | HVM1900 | HVM2400 | HVM2500 | HVM2800 |
| Grinding Table Median Diameter(mm) | 1250 | 1300 | 1500 | 1700 | 1900 | 2400 | 2500 | 2800 |
| Capacity(t/h) | 6~9 | 9~13 | 15~20 | 24~32 | 26~35 | 36~45 | 45～58 | 56~80 |
| Material Moisture | ≤5% | |||||||
| Limestone Powder Fineness | 325 mesh (44um) 90% passed | |||||||
| Main Motor Power(kw) | 110/132 | 185/200 | 250/280 | 355/400 | 450/500 | 450/500 | 710/800 | 1120/1250 |
Re:The data based on Mohs'hardness 3-4 material
Limestone Bond Index≤13kwh/t
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.
Advantages of Limestone Vertical Mill
1. High grinding efficiency and low operation cost.
A. The vertical mill uses the material layer grinding principle to grind materials, which has low energy consumption. The power consumption of the grinding system is 40-50% lower than that of the ball mill, and with the increase of raw material moisture, the power saving effect is more significant.
B. The abrasive body has small wear and high utilization rate.
Since there is no direct contact between metals during the operation of vertical mill, the abrasion of its grinding body is small, and the abrasion per unit product is generally 5-10g/t, which has little metal pollution to the product.
C. The grinding roll sleeve can be turned over for use, which is conducive to extending the service life and reducing the production cost.
2. Low construction and investment costs
The vertical mill integrates fine crushing, drying, grinding, powder selection and transportation. It does not need additional drying, powder selection, lifting and other equipment. The dust bearing gas from the mill can be directly collected by the high-density bag filter or electric dust collector. The layout is compact and can be arranged in the open air. The building area is about 70% of the ball milling system, and the building space is about 50-60% of the ball milling system. Therefore, the process flow of vertical mill is simple, and the occupied area and space are small, which makes the construction cost low.
3. The equipment is environmentally friendly, with low noise, less dust and clean operating environment
During the operation of the vertical mill, the grinding roller and the grinding disc do not contact directly, and there is no metal impact sound of steel balls colliding with each other in the ball mill and steel balls colliding with the lining plate, so the noise is low, 20~25 decibels lower than that of the ball mill. In addition, the vertical mill adopts a fully sealed system. The system operates under negative pressure, without raising dust, and the environment is clean.