85 - 730 t/h Capacity Vertical Roller Mill For Raw Material Coal Slag Quartz Grinding
The raw material vertical mill of Hefei Hengcheng Technology Cement Plant has the advantages of high grinding efficiency, low power consumption, large feeding particle size, easy adjustment of product fineness, simple equipment and process flow, small footprint, low noise, small dust, and easy use and maintenance. , low operating costs, low consumption of wear-resistant materials and so on.
Can be widely used in electric power, metallurgy, cement, chemical industry, non-metallic minerals and other industries, mainly used for cement raw meal, clinker, power plant desulfurization limestone powder, slag powder, manganese ore, gypsum, coal, barite, calcite, aluminum Bauxite and other materials are ground for processing.
The principle of raw meal vertical mill in cement plant.
【Working Principle】
The motor drives the grinding disc to rotate through the reducer, the material falls into the center of the grinding disc from the feed inlet, and the hot air enters the mill from the air inlet. Under the action of centrifugal force, the material moves to the edge of the grinding disc, and is crushed by the grinding roller when it passes through the annular groove on the grinding disc. Re-grinding, when the material in the airflow passes through the dynamic and static separator, under the action of the rotating rotor, the coarse powder falls on the grinding disc for re-grinding, and the qualified fine powder is milled together with the airflow and collected in the powder collecting device, which is product. Moisture-containing materials are dried during contact with hot gas to achieve the required product moisture.
Specifications And Technical Parameters Of HVM Raw Vertical Mill
| Model | 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 | |
【Double Dust Collection System】
This process plan uses a cyclone dust collector for product collection, which can effectively reduce the working negative pressure of the system and the amount of gas passing through the dust collector. , raw ore, etc.
【An Introduction】
HVM vertical mill can produce both coarse powder and ultra-fine powder, and can produce coarse powder from 2 to 5mm for materials with different product fineness requirements (such as grinding shale, raw material for brick making in new wall material industry, sand making in construction industry) etc.) to 15 micron ultra-fine powder with a pass rate of 97% (such as heavy calcium powder in the paper industry, activated carbon ultra-fine powder in the chemical industry), the product fineness adjustment is highly arbitrary, and the adaptability is wide.
【Solution】
For the production of coarse powder, the type selection of vertical mill needs to adopt the structure of the powder separator with low resistance and anti-wear. At the same time, due to the large number of large particles, necessary anti-wear treatment and powder separator structure design are required to achieve reasonable powder selection output and energy consumption;
For the production of ultra-fine powder, the vertical mill should focus on the design and optimization of the powder separator. Due to the large resistance of the powder selection at this time, it is necessary to strictly control the fineness, and to prevent the large particles from running thick, excessive blade wear and damage. Problems such as abnormal vibration caused by large internal resistance of the mill. Therefore, for materials with different product fineness requirements, it is necessary to calculate and analyze the smoothness of materials and gases in the vertical mill, especially the part of the powder separator, according to the characteristics of the material, so as to determine a reasonable structure of the powder separator (such as the rotor form, the number and angle of blades, the number and angle of stationary blades), and at the same time, necessary auxiliary means should be taken to control (such as using a sealed fan for gas sealing to effectively control the running of large particles).
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85-730T/H Cement Vertical Roller Mill plant For Raw Material Coal Quartz Grinding Images
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