Limestone Vertical Powder Mill 80t/h High Capacity Vertical Mill Vertical Grinding Equipment Energy Saving Low Consumption

Description

Product Introduction
1, Working principle of vertical mill limestone:
The grinding process of a vertical mill is completed by a set of grinding devices (i.e. rollers and discs), where the material is ground into powder between the rollers and discs. The movement of the grinding device is driven by the rotation of the grinding disc and the corresponding transmission of the grinding roller. In addition to the weight of the grinding roller, the grinding pressure mainly relies on a set of hydraulic devices to pressurize the material of the grinding disc. After grinding, there is a large amount of coarse powder in the material. The powder is selected by a matching powder selection machine, and the powder selection process is through air flow sorting. During the air flow process, most of the coarse powder automatically falls onto the grinding disc and is received for re grinding. The rest is selected as finished products by the powder selection machine and sent to the finished product storage warehouse through the dust collection and transportation system.

2, Main features of the product
1. Efficient and energy-saving:
(1) High grinding efficiency, low energy consumption, compared to ball mills, energy consumption is 40% -50% lower;
(2) Single machine production capacity is large, and low valley electricity can be utilized;
(3) Vertical grinding technology and equipment are vigorously advocated as new energy-saving and consumption reducing technologies, which are conducive to enhancing the competitive strength of enterprises in the powder industry in this region and even nationwide;
2. Easy maintenance and low operating costs:
(1) The grinding roller can be flipped out of the machine using a hydraulic device, and the replacement of the roller sleeve liner and the maintenance space of the mill are large, making the maintenance operation very convenient;
(2) The grinding roller sleeve can be flipped over for use, extending the service life of wear-resistant materials;
(3) Before starting up, there is no need to place fabric on the grinding disc, and the mill can be started without load, eliminating the difficulty of starting up;
(4) Low wear, special materials are used for the grinding rollers and disc liners, resulting in a long service life;
(5) High degree of automation: The automatic control technology adopts Siemens series PLC from Germany, equipped with an automatic control system, which can achieve remote control and is easy to operate. The workshop can basically achieve unmanned operation, saving operating costs;
3. Low comprehensive investment cost:
Integrating crushing, drying, grinding, and conveying, the process flow is simple, the system equipment is few, the structural layout is compact, and the land area is only 50% of that of a ball mill. It can be arranged outdoors, with low construction costs, directly reducing enterprise investment costs.
4. Stable product quality:
(1) The material stays in the grinder for a short period of time, making it easy to detect the particle size distribution and composition of the product, and ensuring stable product quality;
(2) The product has uniform particle shape, narrow particle size distribution, good fluidity, and strong adaptability.
5. High reliability
(1) Adopting a grinding roller limiting device to avoid severe vibration caused by material breakage during the working time of the mill;
(2) Adopting a new type of roller sealing device, the sealing is more reliable and does not require a sealing fan, further reducing the oxygen content inside the mill and achieving better explosion suppression performance.
6. Environmental protection:
(1) The entire system of HVM vertical grinding machine has low vibration and low noise;
(2) The system is sealed as a whole, operates under full negative pressure, and has no dust leakage, basically achieving a dust-free workshop.
(3) The ultra-fine limestone vertical grinding machine is a specialized equipment for desulfurization gypsum, calcite, limestone, and other fields. It has advantages and characteristics that cannot be compared to other ordinary rolling mills. It is the preferred equipment for promoting large-scale non-metallic ore fields.

Vertical Mill Working Principle:

The main motor drives the grinding disc to rotate through a reducer, and the material enters the vertical mill main machine through a screw conveyor. It is then subjected to gravity and falls to the center of the grinding disc. At the same time, the airflow generated by the fan enters the main machine through the air inlet. Under the action of centrifugal force, the material moves uniformly from the center to the edge of the grinding disc. When passing through the roller conveyor area on the grinding disc, it is crushed by the grinding rollers, and large blocks of material are directly crushed. Fine particles of material are compressed to form a material layer for inter particle crushing. The crushed material continues to move towards the edge of the grinding disc until it is carried away by the strong air flow of the annular guide groove on the periphery of the grinding disc. Coarse materials fall back into the grinding disc due to their high gravity and are ground again; Fine materials enter the powder selection system above the main machine for classification as the airflow rises. Under the action of the rotor blades of the classifier, coarser particles are knocked off by the blades and returned to the grinding disc for grinding. Qualified fine powder will be carried out of the powder selection system with negative pressure air flow, enter the dust removal equipment, and then collected by the powder collector to form the finished product. In addition, other large particle materials and debris will fall into the lower chamber of the mill during grinding, and be scraped into the slag discharge port by the scraper, effectively ensuring the quality of the finished product.
By adjusting the pressure of the hydraulic system, the grinding roller pressure can be adjusted to adapt to different hardness raw materials within a certain range. The rotor speed of the grading system with multiple grading wheels can be adjusted and controlled, and various qualified products with different specifications can be obtained.

Technical Data

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

Limestone Bond Index≤13kwh/t

3, In the field of desulfurization gypsum resource treatment, using high-quality and efficient desulfurization gypsum ultrafine vertical grinding production lines can quickly improve the grinding efficiency of the entire desulfurization gypsum, helping customers create large market value. The price of ultra-fine vertical grinding equipment is adjusted for multiple factors and not directly controlled by the manufacturer. The price of ultra-fine vertical grinding equipment is calculated by integrating various unstable factors such as materials, labor, factory location, and regional differences.
In general, milling machine manufacturers with real talents and knowledge not only support online inquiries, but also welcome customers to conduct on-site inspections of production bases and milling production lines offline. After all, while online shopping brings convenience, there are doubts about the reliability of the grinding machine. Therefore, if a milling machine manufacturer only supports online consumption, customers may need to improve the inspection of the actual operation effect of the milling machine products to prevent purchasing "three no" equipment. Seeing is believing, and grinding machine manufacturers who support offline inspections or video viewing have high reliability.

4, Application field
The HVM vertical grinding machine, with its scientific and reasonable design and unique structural advantages, is widely used for grinding various types of materials in various industries. The materials ground range from high humidity to dry, from exceptionally difficult to easy to grind, and the product fineness ranges from coarse to fine. The processed powder types are diverse, involving numerous industries:
① Moisture content of grinding materials: From materials with a moisture content of 20-30% (such as calcium carbide slag, brown coal, chalk soil, etc.) to materials with a moisture content less than 1% (cement clinker, etc.), the materials have strong adaptability;
② The grindability of grinding materials: from exceptionally difficult to grind (such as quartz sand, steel slag, slag, pyroxene, iron ore, etc.) to easily ground (such as gypsum, calcite, etc.);
③ Grinding product fineness: From 2-5mm (such as new wall material industry brick raw materials, construction industry sand grinding shale, etc.) to 15um with a pass rate of 97% (such as papermaking, chemical industry grinding heavy calcium, etc.), the control of product fineness is simple and easy;

5, 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.