Design and Optimization of Vertical Roller Mill Production Line for Steel Slag

Design and Optimization of Vertical Roller Mill Production Line for Steel Slag

1. Introduction

The steel industry in Sichuan generates significant amounts of steel slag as a byproduct, which requires efficient processing to meet environmental standards and resource utilization goals. Vertical roller mills (VRMs) have emerged as the preferred technology for steel slag grinding due to their energy efficiency, compact design, and superior particle size control. This article explores the design considerations and optimization strategies for VRM production lines tailored to Sichuan’s steel slag characteristics.

2. Steel Slag Properties in Sichuan

Sichuan’s steel slag exhibits unique properties requiring specialized milling solutions:

3. VRM System Design

3.1 Core Equipment Selection

For Sichuan’s steel slag applications, we recommend our LM Vertical Slag Mill series, specifically the LM220N model with following advantages:

• High Capacity: 20-26 t/h production rate
• Precision Grinding: Achieves ≥420m²/kg specific surface area
• Moisture Control: Reduces output humidity to ≤1%
• Wear Resistance: Special alloy grinding components withstand high Fe content

3.2 Auxiliary System Configuration

The complete production line integrates:

4. Process Optimization

4.1 Energy Efficiency Measures

Our LM series mills incorporate multiple energy-saving technologies:

• Hydraulic pressure system reduces specific energy consumption by 15-20%
• Hot gas recycling cuts thermal energy demand by 30%
• Intelligent control system optimizes grinding pressure in real-time

4.2 Product Quality Control

The integrated SCM Ultrafine Mill (325-2500 mesh) ensures final product quality with:

• Vertical turbine classifier for precise particle size distribution
• Pulse dust collector with >99.9% efficiency
• Automatic feedback system maintaining D97≤5μm

5. Case Study: Sichuan Steel Plant

A 500,000 t/y steel slag processing line achieved:

6. Recommended Products

For complete steel slag solutions, we highlight two core products:

6.1 LM220N Vertical Slag Mill

• Capacity: 20-26 t/h
• Power: 900-1000 kW
• Key Advantage: Integrated drying/grinding for high-moisture slag

6.2 SCM1000 Ultrafine Mill

• Fineness: 325-2500 mesh (D97≤5μm)
• Throughput: 1.0-8.5 t/h
• Key Advantage: 30% lower energy consumption vs conventional mills

7. Conclusion

The optimized VRM production line combining LM vertical mills with SCM ultrafine grinding systems provides Sichuan steel plants with an energy-efficient, high-quality solution for slag valorization. Our field-proven designs reduce operating costs while meeting stringent environmental regulations.