fly ash vertical roller mill with transmission control

Fly Ash Vertical Roller Mill Overview

The main components of fly ash include silicon (SiO₂), aluminum (Al₂O₃), iron (FeO and Fe₂O₃), calcium (CaO), titanium (TiO₂), and more. Its particles are porous honeycomb with large surface area and strong adsorption, making it widely used in the production of cement and concrete.

Features of Fly Ash Vertical Roller Mill

1. High-efficiency grinding: Combines multiple functions such as crushing, drying, grinding, and grading, greatly improving the grinding efficiency of fly ash.
2. Energy saving and environmental protection: Compared with the traditional ball mill, energy efficiency is increased by 40% to 50%, effectively reducing energy consumption.
3. System sealing: Operates in a fully closed system under negative pressure with no dust spillage, in line with standards of clean production.
4. Compact structure: Covers 50% less area than a ball mill, saving space and construction costs; suitable for various installation environments.
5. Easy maintenance: Advanced hydraulic system allows easy replacement and maintenance of grinding rollers, lowering maintenance difficulty and cost.

Advantages of Fly Ash Vertical Roller Mill

1. High productivity: Handles more materials per unit time, with production capacity far exceeding traditional mill equipment.
2. Remarkable energy efficiency: Optimized design reduces energy consumption by 40% to 50% compared to ball mills, lowering production cost.
3. Environmentally friendly: Fully enclosed system design reduces dust pollution, meeting environmental requirements and enhancing corporate social responsibility.
4. Strong adaptability: Capable of handling materials of different hardness and particle size, suitable for grinding a variety of minerals and wastes.
5. Small footprint: Compact design is especially suitable for production environments with limited space.

Working Principle of Fly Ash Vertical Roller Mill

Based on compression, shearing, and grinding of materials. Material is fed into the top of the equipment and, after iron removal, falls onto the rotating grinding table. On the high-speed rotating table, material undergoes high pressure from the grinding rollers, being crushed by compression and shear forces. Fine powder is carried into the classifier and separated by the powder selector, while coarse particles are returned for further grinding. The whole system operates under negative pressure, avoiding dust leakage and improving safety and stability.

Application Areas of Fly Ash Vertical Roller Mill

• Cement and concrete industry: As an admixture, fly ash improves workability, durability, and strength of concrete, providing high quality raw material for cement production.
• Construction industry: Used as an environmentally friendly additive in building materials to enhance concrete strength and stability.
• Iron and steel industry: Used for grinding blast furnace slag, steel slag, and other materials for efficient waste recycling and reuse in metallurgy.
• Environmental protection industry: Recovery and reuse of fly ash reduces industrial waste and improves the environment.
• Mineral processing industry: Widely processes minerals such as gypsum, limestone, silica sand, bentonite, and more.

Design Principle of Fly Ash Vertical Roller Mill

1. Variable speed control: Adjusts roller mill speed to adapt to different particle sizes and hardness.
2. Multi-functional integration: Integrates crushing, drying, grinding, classifying, and conveying for improved efficiency and space savings.
3. Hydraulic system: Controls grinding roller pressure for uniform and efficient crushing.
4. Air sealing and lubrication system: Efficient air sealing and forced lubrication extend service life and reduce maintenance frequency.

Scope of Application

• Coal powder, cement clinker
• Blast furnace slag, steel slag
• Limestone, silica sand
• Bentonite, talc
• Metallurgical slag, gypsum