Recorded result
- D50
- 9.4 µm
- D90
- 18.2 µm
Particle sizes for the recorded sample and sampling time.
Sample assessment
The feed was granular ammonium bicarbonate and was recovered as an alcohol-based slurry at the measured checkpoint. The test combined zirconia contact with external air cooling. Selection must preserve the wet formulation and distinguish the sampled 60-minute condition from the unmeasured additional milling period.
Recorded objective
A recorded D50 objective of 10 µm.
Equipment and selection
The source identifies XQM family. The related TENCAN product association is Vertical square planetary ball mill, Low temperature planetary grinding machine. This identifies the recorded equipment family, rather than an independently verified serial-number configuration. Jar contact materials and charge details below are test observations; an unspecified steel grade or ball-percentage basis is not supplied by the association.
Test setup
| Recorded setup | XQM planetary family with air cooling; zirconia jar and zirconia balls, standard charge; 60 g granular material; setting 400; run/pause cycle recorded as 5:1; interval units unspecified. |
|---|---|
| Speed notation | Values are retained as recorded speed settings. The source does not identify the revolution/rotation reference; no separate jar speed is inferred. |
Recorded procedure and results
The material was wet milled with alcohol while using air cooling. At 60 minutes the suspension had D50 = 9.4 µm and D90 = 18.2 µm. The procedure describes the material as a slurry at this point. Milling continued for another 20 minutes and the sample was retained for subsequent assessment. The duration field gives 80 minutes. No new particle-size measurement was recorded for the final 20-minute extension.
Interpretation
The measured 60-minute median is below the numerical D50 objective and supplies the favorable observed endpoint. The final extension should not be presented as an independently measured improvement. D90 = 18.2 µm also shows that a D50 result does not mean every particle is below 10 µm. Air cooling formed part of the test arrangement, but neither a set temperature nor a measured temperature series was supplied, so thermal control cannot be quantified from this record.
Practical precautions
Record alcohol identity and quantity, because the note gives only a generic solvent description. Verify temperature during any repeat and preserve the 60-minute sample for comparison with the extended run. Assess slurry recovery and handling before choosing a longer process.
TENCAN alternatives to evaluate
TENCAN Liquid Nitrogen Planetary Ball Mill: Evaluate liquid-nitrogen cooling only if a defined thermal requirement cannot be met with the recorded air-cooling arrangement. Confirm formulation compatibility and log actual temperature and slurry recovery; the current record supplies no temperature comparison or verified advantage for colder operation. This is a recommendation for a new comparison, not an observed result of this trial.
Endpoint context: D50 = 9.4 µm; D90 = 18.2 µm at 60 minutes; later 20-minute extension unmeasured.
Tested equipment association only: XQM family; exact machine variant not inferred. External air cooling explicitly recorded; air-cooled family added as an association, not a replacement machine identity.
About this trial
TENCAN laboratory trial, 2022. Observations above come from this experimental record; selection considerations and proposed comparisons are engineering interpretation. Results apply to this sample and recorded conditions.