Start with evidence, not a dosage change
Diagnose rising kWh/t at an equivalent cement-quality target before attributing the problem to a grinding-aid product.
Diagnostic checklist
- Use the same electrical measurement boundary
- Check output and cement fineness together
- Review feed moisture and grindability
- Inspect separator efficiency and overgrinding
- Check mill coating or media/liner condition
- Verify dosage calibration and trial stability
Minimum comparison data
Keep timestamps for material composition, t/h, power, kWh/t, Blaine, residue, temperature, separator settings, product batch and actual dosage. Quality samples should match the process-data period.
Escalation path
- Stabilize safe operation.
- Confirm instruments and dosing calibration.
- Restore a documented baseline.
- Change one variable at a time.
- Request a technical review when the root cause remains unclear.
Standards & method references
- ASTM C465 — Processing additions for hydraulic cement manufacture
- ISO 679:2009 — Cement strength test method
- ISO cement, gypsum, lime and mortar standards catalogue
The applicable standard, edition and local regulatory requirement must be confirmed for each project. A reference does not claim product compliance.