Hefei Hengcheng Industrial Equipment Technology Co., Ltd
BASED ON POWDER, EQUIPPED WITH THE WORLD
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High Operating Rate Vertical Coal Mill Limestone/coal / Cement Clinker Powder Grinding Mill Plant
Description
Vertical mills, also known as roller mills and medium-speed mills, have a history of more than half a century since they were invented. The grinding performance is significantly improved and improved, and the hydraulic system is more reliable. The structure of the grinding roller sleeve and the grinding disc lining plate is continuously improved, and the grinding disc rotation speed corresponds to the different product fineness, so that the grinding method is more and more reasonable, so that the development and application of the vertical mill are further expanded.
Our company's vertical mill is a new type of energy-saving grinding equipment designed on the basis of extensive collection of various vertical mill materials at home and abroad, absorbing excellent technology and combining the characteristics of my country's cement industry. It not only has the advantages that the grinding roller can be turned out of the machine and is convenient for maintenance, but also has the characteristics that the roller sleeve can be turned over for use and has a long service life.
Advantages:
1. High grinding efficiency and low grinding energy consumption. Compared with the traditional air-swept ball mill with the same scale output, the power consumption of grinding can save about 20-40% of electricity, especially in the case of high moisture content of the raw coal, the power saving is greater.
2. Large drying capacity. The vertical coal mill adopts air-swept operation. By adjusting the air temperature and air volume into the mill, it can grind and dry raw coal with a moisture content of up to about 20%. The vertical coal mill can use a large air volume to meet its high-moisture drying requirements. .
3. The particle size of the grinding material is large, which can reach about 5% of the diameter of the grinding roller. Generally used for coal mill of 2500t/d～6000t/d clinker production line, the feeding particle size can reach 50～80mm.
4. Good controllability of grinding. The residence time of the material in the vertical mill is only 0.5 to 2 minutes, and the qualified products in the mill can be separated in time, avoiding the phenomenon of over-grinding. The fineness of the product can be controlled by adjusting the rotor speed of the dynamic and static separator. And the fineness is stable and the particle size is uniform, which is conducive to the combustion of pulverized coal, and is very suitable for grinding inferior coal and anthracite.
5. The process flow is simple, the floor area is small, the building area is small, and it can be arranged in the open air. The vertical mill integrates the five processes of crushing, grinding, drying, powder selection, and conveying. The process is simple, the layout is compact, and the floor space is small.
6. Low noise, less dust, and clean operating environment. The system works under negative pressure, no dust is flying, and the operating environment is clean.
7. Less consumption of grinding body, long service life and high running rate.
Technical DATA
| 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 |
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 passing through the annular groove on the grinding disc. The crushed material is carried by the high-speed airflow at the air ring at the edge of the grinding disc, and the large particles fall directly 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 ground 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.
Our Service
We provide Engineering Design, After-sales Service, Engineering Consulting
Engineering Design
We have a professional technical team composed of high-quality talents such as experts and scholars, senior engineers and postgraduates who have won the National Science and Technology Progress Award and participated in the formulation of relevant industry standards. Experience, has a wealth of engineering practice experience and theoretical basis. It can provide professional and systematic engineering design services for customers in various industries involving grinding system and pneumatic conveying system engineering, and provide a complete set of solutions in the field of powder engineering.
After-sales Service
We have a long-term service in the production line, good technology, responsible after-sales service team. All members have more than 5 years of experience in the industry, and can provide customers with timely, efficient, comprehensive and scientific after-sales service. It can provide customers with the whole process of after-sales service from engineering construction, production line equipment installation, production line debugging until the production line reaches the standard and production capacity, solves various incurable diseases encountered by customers, and provides thoughtful, meticulous and perfect after-sales service.
Engineering Consulting
Based on our many years of engineering practice experience in different industries, we can provide customers with professional and multi-faceted engineering consulting services involving grinding system and pneumatic conveying system engineering. From the early stage of the project to the installation and commissioning of the production line, until the stable production reaches the standard, we can provide multi-angle technical consulting services. As long as customers have needs, we will provide customers with reasonable suggestions and better solutions at a professional level to meet customer expectations and meet customer needs.