20tph Limestone Vertical Mill High Capacity Slag Vertical Roller Mill

20tph Limestone Vertical Mill High Capacity Slag Vertical Roller Mill

Description

Industry Application of HVM Vertical Grinding Machine
Industries such as building materials, electricity, steel, energy, heat, chemical, coal chemical, non-ferrous metallurgy, lime kilns, mineral processing, etc.
The HVM vertical mill can process materials such as ferrite, slag, slag, cement, diamond, iron ore, chromium ore, manganese ore, gold ore, copper ore, aluminum ore, lead zinc ore, tantalum niobium ore, polymetallic ore, nickel ore, bauxite, silicon carbide, titanium dioxide, talc, bentonite, calcite, kaolin, graphite, mica, wollastonite, feldspar, dolomite, pyrophyllite, quartz sand, fluorite, limestone, organic silicon, lithium ash, shale, volcanic ash, coal, etc.

Structure of Vertical Roller Mill:

1) The combined classifier improves the powder selection efficiency.

2) It is not necessary to distribute material on the grinding plate before start-up.The roller can be lifted up and down automatically and start without load.

3) It is well sealed by welded arc plate and structure is simple and reliable

4) With the help of roller turning device, it is easily to turn the roller out for maintenance.

5) Both sides of roller sleeve can be used so that the service life of refractory material is extended.

6) Grinding roller limit device can ensure a certain space between roller and grinding table, which avoids the direct friction and collision between roller and grinding table and enhances safety

7) The grinding roller is driven by spinning grinding table.Pressure filling and adjustment and roller lifting can be remotely controlled without operator on-site.

8) The roller bearing is circularly lubricated by thin oil to enable it to work under low temperature and clean grease so that the service life is extended

Vertical Mill Structure:

Composed of a main machine, analyzer, fan, finished cyclone separator, micro powder cyclone separator, and air duct. The main machine is composed of a frame, inlet volute, shovel, grinding roller, grinding ring, and cover.

Working Principle:

The electric motor drives the grinding disc to rotate through the 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 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 wind ring 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. Qualified fine powder is discharged with the airflow and collected in the powder collection device, which is the product. Materials containing moisture are dried during contact with hot gases to achieve the required product moisture.

Technical Data

Re:The data based on Mohs'hardness 3-4 material

      Limestone Bond Index≤13kwh/t

Main features of the product

1. High efficiency and energy saving:

(1) High grinding efficiency and low energy consumption, compared with ball mills, energy consumption is 40%-50% lower;

(2) The capacity of a single machine is large, and low valley electricity can be utilized;

(3) Vertical grinding technology and equipment is a new energy-saving and consumption-reducing technology, which is conducive to enhancing the competitiveness of enterprises in the field of powder industry in the region and the country;

2. Easy maintenance and low operating costs:

(1) The grinding roller can be turned out of the machine by hydraulic device. The replacement of the roller sleeve liner and the grinding machine has large maintenance space, and the maintenance operation is very convenient;

(2) The roller sleeve can be turned over to extend the service life of the wear-resistant material;

(3) There is no need to fabric on the grinding disc before starting the machine, and the mill can be started at no load, eliminating the trouble of starting the machine;

(4) Low wear, grinding roller and disc liner are made of special materials and have a long service life;

(5) High degree of automation: The automatic control technology adopts the German Siemens series PLC, equipped with automatic control system, which can realize remote control, easy operation, and the workshop can basically realize unmanned operation and save operating cost;

3. Low overall investment cost:

It integrates crushing, drying, grinding and conveying. It has simple process, few system equipment, compact structure and small floor space. It is only 50% of the ball mill. It can be arranged in the open air and has low construction cost, which directly reduces the investment cost of the enterprise.

4. Product quality is stable:

(1) The time of staying in the mill is short, and it is easy to detect the particle size distribution and composition of the product, and the product quality is stable;

(2) The product has a uniform particle shape, narrow particle size distribution, good fluidity and strong product adaptability.

5. High reliability

(1) Adopting the grinding roller limit device to avoid the violent vibration caused by the material breakage during the working time of the mill;

(2) The new type of grinding roller sealing device makes the sealing more reliable, and does not need to seal the fan, further reducing the oxygen content in the grinding, and the explosion suppression performance is more excellent.

6. Environmental protection:

(1) The whole system of HVM vertical mill has low vibration and low noise;

(2) The whole system is sealed, fully negative pressure running, no dust overflow, basically can achieve dust-free workshop.