Vertical Grinding Mill - 6 - 80tph Limestone Vertical Grinding Machine For Various Ores

Vertical Grinding Mill - 6 - 80tph Limestone Vertical Grinding Machine For Various Ores

Description

1. Product Introduction:
Limestone vertical mill is a new type of vertical mill developed and designed by our company for the final grinding process of cement clinker. It integrates grinding, drying, and grading. Compared with traditional mills, its major advantage is low energy consumption. Due to its high grinding efficiency, large drying capacity, stable product fineness, and low operating costs, this equipment has become a new generation of environmentally friendly grinding equipment. HVM vertical mills have a variety of varieties and complete specifications, which can meet different production needs according to different project scales.
2. Application scope of vertical mill:
The new ultra-fine vertical grinding equipment can be widely used for large-scale ultra-fine dry powder processing of non-metallic minerals such as calcite, marble, limestone, heavy calcium, talc, barite, and dolomite.

3.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

4. Application Area
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;
The industries where HVM vertical grinding machines are applied include building materials, electricity, steel, energy, heat, chemical, coal chemical, non-ferrous metallurgy, lime kilns, mineral processing, and other industries.
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.

5. Product advantages of vertical mill:
1. Strong product diversity, the grinding machine is equipped with a turbine airflow classifier, which can produce a wide range of finished product particle sizes μ M interval 30%~70%, D97=4-45 μ m. Specific surface area 21000 cm/g, while D97=8.5 μ M's products can be directly produced by the host.
2. Adopting optimized production line process design, the energy consumption of ultrafine vertical mills is lower than that of similar vertical mills.
3. The ultrafine powder produced by the host has a narrow particle size distribution after classification μ The advantages of adjustable and controllable m content, high profit added value of powder products, and good shape of individual particles. The product has strong diversity and competitiveness, and can be applied in a wide range of fields. In industries such as artificial granite, plastic masterbatch, PVC pipes, wires and cables, diapers, non-woven fabrics, etc. It has the advantages of good activation effect and low oil absorption value.
4. The improved rollers, grinding discs, guide systems, and internal circulation systems by the company greatly improve grinding efficiency.
5. The improved grinding machine can operate under low vibration and lower noise.
6. The entire system is a fully enclosed circulation system with low dust pollution, making the production environment clean, hygienic, and more environmentally friendly.
7. The main wear-resistant components of the grinding machine are all made of imported wear-resistant materials, which increases the service life of the grinding machine and reduces maintenance costs.
During the grinding process, automatic computer control can be used to add grinding aids for powder treatment, thereby increasing the added value of the product. The entire production line process is controlled by PLC throughout the process, with real-time Flash display, and can be connected to the continuous modification machine central control system, achieving a high degree of artificial intelligence.