Hefei Hengcheng Industrial Equipment Technology Co., Ltd
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85t/h Energy Efficient Vertical Raw Mill For Raw Material Slag Calcium Carbonate Grinding Plant
Description
What is the principle of vertical grinding of raw materials in cement plants? Hefei Hengcheng provides HVM cement plant raw material vertical grinding system, which is an energy-saving advanced cement plant raw material grinding equipment that integrates drying, grinding, grading, and transportation through the introduction of advanced foreign technology and renovation.
To understand the principle of vertical grinding of raw materials in cement plants, one must first start by understanding the raw materials in cement plants. Why do cement plants process raw materials? What is this raw material and what is it used for processing by cement manufacturers?
Cement raw material is a material that is composed of limestone raw materials, clay raw materials, and a small amount of correction raw materials (sometimes with mineralizers, crystal seeds, and coal added during vertical kiln production) in proportion and ground to a certain fineness.
The HVM series cement plant raw material vertical mill is an energy-saving advanced grinding equipment developed by Guilin Hongcheng through learning and introducing advanced foreign technology, and after more than 20 years of dedicated research and development, which integrates drying, grinding, grading, and transportation.
The raw material vertical mill of Hefei Hengcheng HVM Cement Plant has advantages such as high grinding efficiency, low power consumption, large feed particle size, easy adjustment of product fineness, simple equipment process flow, small floor area, low noise, low dust, simple use and maintenance, low operating costs, and low consumption of wear-resistant materials. It can be widely used in power, metallurgy, cement, chemical industry, non-metallic ore and other industries, mainly for grinding raw cement, clinker, desulfurization limestone powder of power plant, slag powder, manganese ore, gypsum, coal, barite, calcite, bauxite and other materials.
Working principle: The electric motor drives the grinding disc to rotate through a reducer, and the material falls into the center of the grinding disc from the feeding port. At the same time, hot air enters the grinding chamber from the air inlet. Under the action of centrifugal force, the material moves towards the edge of the grinding disc and is crushed by the grinding roller when passing through the circular groove on the grinding disc. The crushed material is carried up by the high-speed airflow at the edge of the grinding disc, and large particles directly fall onto the grinding disc for 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 onto the grinding disc for re grinding, and qualified fine powder is discharged with the airflow, Collect in the powder collection device, which is the product. Materials containing water are dried in the Contact process with hot gas to meet 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 | ||||||||
In terms of grinding systems, we have developed targeted, mature, reliable, safe and efficient grinding technologies and supporting equipment targeting the different physical and chemical characteristics of various types of materials in various industries, such as moisture, grindability, product fineness, and safety. The core equipment is HVM vertical grinding, which processes materials from high humidity to dry, from exceptionally difficult to grind to easy to grind, and the fineness of products ranges from coarse to fine, covering a wide range of fields, There are various types of materials processed. Provide a complete set of scientific and reasonable process plans and equipment selection for the vertical grinding machine powder system, and provide integrated powder processing solutions.
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.