How to Troubleshoot and Repair Common Grinding Mill Issues

How to Troubleshoot and Repair Common Grinding Mill Issues

Grinding mills are essential equipment in mineral processing, cement production, and other industries. However, operational issues can arise due to mechanical wear, improper maintenance, or suboptimal settings. This guide provides systematic troubleshooting methods for common grinding mill problems, along with recommended solutions.

1. Excessive Vibration

Root Causes:

• Unbalanced rotating components (e.g., worn rollers or misaligned shafts)
• Foundation bolt loosening
• Irregular feed material distribution

Solutions:

For mills requiring high-precision balancing, our SCM Ultrafine Mill features dynamic balancing technology with vibration sensors that automatically adjust operational parameters. Its vertical turbine classifier maintains stable operation even at 5μm fineness.

2. Reduced Output Capacity

Key Indicators:

• Decreased throughput >15% from baseline
• Increased specific energy consumption

Troubleshooting Steps:

1. Check feed material hardness (Bond Work Index test)
2. Inspect grinding elements wear:
   • Roller/ring clearance >5mm requires replacement
   • Blade thickness <30% original indicates wear
3. Verify classifier speed matches target fineness

Our MTW Series Trapezium Mill addresses these challenges with:

• Wear-resistant combined blades (30% longer service life)
• 98% efficient gear transmission maintaining constant power output
• Automatic pressure adjustment compensating for roller wear

3. Abnormal Noise Patterns

4. Product Fineness Deviation

Adjustment Protocol:

1. For coarse output:
   • Increase classifier rotor speed by 5-10% increments
   • Verify air volume matches design specification (±5%)
2. For excessive fines:
   • Reduce grinding pressure 0.2MPa steps
   • Check for internal recirculation leaks

Preventive Maintenance Schedule

Implementing these troubleshooting methods while utilizing advanced mills like our SCM Ultrafine Mill (with smart monitoring systems) or MTW Series (featuring quick-wear part replacement design) can significantly reduce downtime and maintenance costs.