Moinho vertical de matérias-primas
- Production Capacity: 20-300 t/h (depending on raw material and grinding fineness)
- Specific Surface Area: 330-380 m²/kg (adjustable based on raw material)
- Potência do motor: 250-1000 kW
- Maximum Feed Size: ≤100 mm
- Grinding Fineness: 80-90 μm (customizable upon request)
- Sistema de controle elétrico: PLC automated control with touchscreen display
- Aplicativo: Vertical Raw Mill is widely used for grinding raw materials in cement production lines. It is suitable for cement production materials such as limestone, clay, and iron powder, effectively enhancing production efficiency, reducing energy consumption, and ensuring the fineness and uniformity of cement raw materials. It is also extensively applied in slag grinding and other industrial grinding fields.
Working Principle of the Vertical Raw Mill
The Vertical Raw Mill is an efficient grinding machine composed of several key components, including the separator, grinding roller assembly, grinding table assembly, pressure loading system, gearbox, motor, and housing. The working principle involves applying grinding pressure through the grinding rollers to crush material on the grinding table. The grinding table rotates to evenly distribute the material, while the grinding rollers, assisted by the hydraulic loading system, apply pressure to crush the material. The ground material is then carried by the airflow system to a high-efficiency separator, where fine powder is recirculated for further grinding, and coarse particles are rejected. Throughout this process, the gearbox and motor provide the necessary power, ensuring stable operation.
During the grinding process, the Vertical Raw Mill efficiently crushes and dries materials, especially those with high moisture content, through its precise hydraulic loading system and airflow system. The equipment efficiently completes the grinding and drying tasks, ensuring the stability of cement production and the quality of the final product. Each component of the mill is designed for optimization, ensuring high efficiency, low energy consumption, and a long service life. The system is highly adaptable to changing production demands and can quickly adjust operational parameters to meet different cement production requirements.
Advantages and Technical Parameters
of Vertical Raw Mill
- Vantagens
- Technical Parameters
- Energy-efficient: The advanced material bed grinding technology saves 20%~30% energy, especially when grinding raw materials with high moisture content.
- Strong drying capacity: Utilizes kiln hot air to dry materials, enabling the processing of raw materials with up to 15% moisture content while simultaneously grinding and drying.
- Space-saving and simplified process: Integrates crushing, drying, grinding, and classification functions in one unit, reducing space and equipment requirements.
- Low noise, minimal dust: The grinding rollers do not directly contact the grinding table, resulting in noise levels 20-25 decibels lower than ball mills. The system operates in a fully sealed negative pressure environment with no dust emissions.
- Low wear, minimal contamination: Low wear and metal contamination as low as 5-10g/t, ensuring product purity.
- Easy maintenance, long service life: The grinding roller sleeves are reversible, extending the equipment’s lifespan, and the machine is easy to operate and maintain.
- Stable product quality: The ground products have stable chemical composition and uniform particle size, helping to stabilize the calcination process.
| Model | LF53.4 | LF38.4 | LF36.4 | LF34.4 | LF32.4 | LF28.3 | LF27.3 | LF25.2 | LF22.2 | LF17.2 | LF14.2 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Grinding Mill Diameter (mm) | 5300 | 3800 | 3600 | 3400 | 3200 | 2800 | 2700 | 2500 | 2200 | 1700 | 1400 |
| Number of Grinding Rollers | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 2 |
| Installed Power (kW) | 3600~4000 | 2000~2500 | 1800~2240 | 1600~1800 | 1400~1600 | 800~1250 | 800~1000 | 710~900 | 400~500 | 200~250 | 132~155 |
| Classifier Power (kW) | 200 | 132 | 110 | 90 | 90 | 75 | 55 | 45 | 30 | 15 | 11 |
| Maximum Feed Particle Size (mm) | ≤100 | ≤85 | ≤80 | ≤70 | ≤70 | ≤70 | ≤65 | ≤70 | ≤50 | ≤40 | ≤40 |
| Feed Moisture Content (%) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Final Product Fineness (80μm Sieve Retention) (%) | 12~14 | 12~14 | 12~14 | 12~14 | 12~14 | 12~14 | 12~14 | 12~14 | 12~14 | 12~14 | 12~14 |
| Final Product Moisture Content (%) | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Raw Material Grindability Index (Wi) | 7.5~13 | 7.5~13 | 7.5~13 | 7.5~13 | 7.5~13 | 7.5~13 | 7.5~13 | 7.5~13 | 7.5~13 | 7.5~13 | 7.5~13 |
| Production Capacity (t/h) | 330~510 | 185~280 | 170~260 | 140~210 | 135~190 | 85~130 | 78~120 | 60~90 | 40~65 | 22~33 | 13~20 |
Vertical Raw Mill Features Low Operating Costs
The Vertical Raw Mill utilizes grinding rollers that directly crush the material on the grinding table, which significantly reduces energy consumption by 30%–40% compared to traditional ball mills. In addition, since the grinding rollers do not directly contact the grinding table and are made from high-quality wear-resistant materials, the wear is minimal, greatly extending the service life of the equipment. These design advantages ensure that the mill operates efficiently and stably over long periods, significantly reducing both operational and maintenance costs.
High grinding efficiency
The Vertical Raw Mill utilizes a hydraulic pressure boost system to effectively increase the grinding force of the rollers, significantly improving material grinding efficiency and output. The hydraulic system can adjust the pressure on the grinding rollers according to production requirements, ensuring a more stable and efficient grinding process, while also increasing output and reducing energy consumption. This flexibility enables the equipment to handle different types of materials, ensuring efficient operation of the production line.
In addition, the Vertical Raw Mill is equipped with a limit stop device that precisely controls the contact between the grinding rollers and the grinding ring, preventing accidental contact that could cause equipment vibration or wear. This design ensures that the equipment remains stable during long-term operation, reducing maintenance costs caused by excessive wear or equipment failures.
Vertical Raw Mill Maintenance Made Easier
Lafa’s Vertical Raw Mill significantly reduces downtime and maintenance costs through simplified inspection and maintenance procedures. The equipment features easily accessible hydraulic cylinders and a tilting boom, making roller sleeve and liner replacement more convenient and efficient. This design enables maintenance personnel to perform repairs swiftly, effectively minimizing downtime losses while substantially reducing labor and repair costs. Through these optimizations, the Vertical Raw Mill maintains high efficiency and stability during long-term operation, lowering overall equipment operating costs.
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We offer comprehensive after-sales services including equipment installation, commissioning, technical training, regular maintenance, and troubleshooting. Our service team provides customized support based on your needs, ensuring efficient operation and maximizing equipment lifespan.
The price of a Vertical Raw Mill varies depending on the model, specifications, and customization requirements. We provide the most competitive quotes based on your production needs and specific requirements. Please contact our sales team for detailed information.
Maintenance of the Vertical Raw Mill is relatively simple and mainly involves periodic checks of the grinding rollers and grinding table for wear, timely replacement of roller sleeves and liners, and checking the hydraulic and lubrication systems. The design of the equipment makes maintenance easy, significantly reducing downtime.
The lifespan of a Vertical Raw Mill is typically over 10 years. Its grinding rollers and grinding table are made of high-wear-resistant materials, and its design optimizes wear performance, ensuring long-term efficient and stable operation.
Our delivery lead time varies based on the order quantity and production schedule. Typically, the delivery time for standard equipment is 4 to 6 weeks, while customized equipment may require a longer period. We will provide a specific delivery timeline based on your requirements and ensure timely delivery.
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