Here’s a structured questionnaire on vertical roller mills (VRM) that you can convert into a PDF format. This questionnaire is designed for professionals in the cement, mining, or mineral processing industries to assess operational efficiency, maintenance practices, and performance optimization.
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Questionnaire on Vertical Roller Mill (VRM) Performance
*(For Engineers, Operators, and Maintenance Personnel)*
# Section 1: General Information
1. Name (Optional): ________________________
2. Company: ________________________
3. Industry Sector: ☐ Cement ☐ Mining ☐ Minerals ☐ Other (Specify): ________
4. Years of experience with VRMs: ☐ 10
# Section 2: Operational Parameters
5. What is the typical capacity (TPH) of your VRM? ________
6. Feed material type: ☐ Limestone ☐ Clinker ☐ Slag ☐ Coal ☐ Other: ________
7. Moisture content in feed (%): ________
8. Fineness of product (Blaine/cm²/g or residue %): ________
# Section 3: Performance & Efficiency
9. Specific power consumption (kWh/ton): ________
10. Major challenges faced during operation (*Select all that apply*):
☐ Vibration issues ☐ Wear of rollers/table ☐ Poor product fineness
☐ High energy use ☐ Feed variability ☐ Other: ________
11. How often is mill vibration monitored?
☐ Continuously ☐ Daily ☐ Weekly ☐ Only during issues
# Section 4: Maintenance Practices
12. Maintenance strategy used:
☐ Reactive ☐ Preventive ☐ Predictive (condition monitoring)
13. Average downtime per year due to VRM maintenance (hours): ________
14. Most replaced components (*Rank in order*): _____ Rollers _____ Table liners _____ Hydraulic cylinders _____ Gearbox
# Section 5: Technology & Upgrades
15. Are you using any advanced technologies? (*e.g., IoT sensors, AI-based optimization*) ☐ Yes ☐ No (If yes, describe): ________
16. Would you consi.jpg)
upgrading your VRM system? ☐ Yes (Priority areas: ________) ☐ No
# Section 6: Environmental Impact
17. Noise levels near the VRM (dB): ________