Cement & Minerals
Dust, shock load, high temperatures and large gear drives make wear debris, contamination and lubrication practice decisive.
Cement & Minerals programmes should connect equipment criticality, credible failure modes, representative samples, routine and triggered tests, response ownership and maintenance feedback.
Design the programme around how the assets fail.
Cement and mineral-processing plants operate crushers, mills, kilns, fans and hydraulic systems in severe dust and heat. Large wear particles may require PQ, ferrography and filter-debris examination beyond routine ICP.
Use this guide to scope an oil-analysis programme; then confirm equipment-specific limits, methods and safety controls with the laboratory, OEM and site engineering team.
What to test—and why.
Routine panels create comparable history. Triggered tests answer a focused question after a trend change, inspection finding or operating event.
| Equipment | Fluids | Primary risks | Routine tests | Triggered / advanced tests | Sampling approach |
|---|---|---|---|---|---|
| Raw and cement mills | Gear oil, bearing oil | Gear distress, bearing wear, dust, water | kinematic viscosity, elemental analysis icp oes, pq index | analytical ferrography, karl fischer water, particle count | Use active circulation points and inspect magnetic plugs and filters. |
| Kiln drives and support rollers | Gear oil, circulating oil, grease | Heat, misalignment, load, lubricant starvation | kinematic viscosity, elemental analysis icp oes, pq index | analytical ferrography, ftir oil condition monitoring | Sample hot circulating oil and representative loaded-zone grease. |
| Crushers, fans and hydraulics | Gear oil, bearing oil, hydraulic fluid | Abrasive dirt, imbalance-related wear, particle contamination | elemental analysis icp oes, particle count, kinematic viscosity | pq index, analytical ferrography, karl fischer water | Use repeatable live points after normal production. |
Controls that make the data useful.
- 01Treat dust exclusion as a reliability control
- 02Pair fine-element spectroscopy with large-particle methods
- 03Record production load and shutdown events
- 04Inspect breathers, seals and filtration after silicon rises
Decisions the programme should improve.
- 01Earlier mill and kiln-drive inspection
- 02Lower abrasive wear
- 03Improved lubricant life
- 04Reduced production interruptions
Build a closed evidence-to-action loop.
A test panel becomes a reliability programme only when the sample, interpretation, response and field outcome remain connected to the same asset and compartment.
| Stage | Control | Evidence created | Decision |
|---|---|---|---|
| 1 · Baseline | Confirm asset, compartment, fluid, method, point and operating state | Comparable new or stable in-service reference | Define normal variability and initial interval |
| 2 · Routine surveillance | Collect at a fixed risk-based interval from the documented point | Trend of fluid condition, contamination and wear | Continue, monitor or request focused confirmation |
| 3 · Exception diagnosis | Use mechanism-specific tests, secondary points, filters and companion technologies | Independent evidence for or against the failure hypothesis | Protect, inspect, correct or revise the hypothesis |
| 4 · Verification | Repeat comparable evidence after maintenance | Post-action condition and rate of change | Close the work order or escalate |
| 5 · Programme learning | Record inspection findings, false positives and missed detections | Asset-specific failure signatures and improved rules | Change point, panel, interval, limit or procedure |
Translate severity into a defined response.
These are workflow classes—not universal pass/fail limits. Asset consequence, rate of change and site safety procedures control the urgency.
| Class | Typical evidence pattern | Minimum review | Possible response |
|---|---|---|---|
| Stable / Normal | Comparable results remain within the justified baseline and no corroborating distress is present | Confirm route and context are complete | Continue the planned interval |
| Monitor | A small deviation, unusual rate of change or incomplete contextual explanation | Check sample, top-up, maintenance and companion indicators | Clarify data, add one focused test or shorten the interval |
| Abnormal / Investigate | Unsatisfactory fluid, contamination or wear evidence with a credible developing mechanism | Confirm promptly using independent evidence | Inspect, control the source and plan corrective work |
| Critical / Urgent review | Rapid, severe or corroborated change with material equipment or safety consequence | Immediate qualified operational and engineering review | Apply site procedures; protect people and equipment before diagnosis continues |