Sample assessment
The feed was manganese oxide powder, with no oxidation state or starting size distribution specified.
Analyst consideration: For manganese oxide, the upper distribution tail is directly relevant because D90 is the actual result. Oxide identity and contact contamination should be assessed separately if the powder has a chemical or functional use.
Recorded objective
The recorded fineness requirement was 1 µm; no all-particle condition was stated.
Equipment and selection
The machine entry is XQM. TENCAN Vertical Planetary Ball Mill is associated at the recorded series level. No exact housing variant is inferred from jar capacity or an abbreviated machine label.
Test setup
| Jar entry | Corundum250 |
|---|---|
| Media entry | Zirconia 250 |
| Media-charge notation | 123-250/1215-30 |
| Sample-load entry | 30 (unit not stated) |
| Controller speed setting | 600 |
| Cycle notation | 5/1 |
Unlabelled jar, media and load numbers remain source notation, not assigned units. Controller settings are not certified rpm. The cycle notation has no independently stated timing unit or reversing definition.
Recorded procedure and results
A corundum jar and zirconia media were recorded. At six hours the sampled distribution had D90 = 1 µm, which is also the result entry. No D50, earlier size values, liquid addition or temperature series was supplied in this record.
Interpretation
The precise supported endpoint is the six-hour D90. This percentile does not mean that every particle was at or below 1 µm, nor does it identify the chemical state of the milled oxide. No grinding-rate calculation is possible without a feed distribution.
Practical precautions
Keep the measurement preparation consistent and retain an initial reference. Confirm the oxide grade and inspect recovered material before comparing another manganese-containing powder.
TENCAN alternatives to evaluate
TENCAN Omnidirectional Planetary Ball Mill. For manganese oxide, a QXQM comparison can retain the six-hour D90 measurement while examining material redistribution. Use the same analytical dispersion and do not replace D90 with a maximum-size claim. Tumbling changes bed orientation and redistribution, providing a specific motion comparison while the six-hour D90 measurement remains the common decision criterion. This is an untested comparison proposal, not a result of this trial.
Association follows the explicit XQM source entry; only recorded tested series/configurations are related. No jar-volume inference.
About this trial
TENCAN laboratory trial, 2017–2020. Observations above come from this experimental record; selection considerations and proposed comparisons are engineering interpretation. Results apply to this sample and recorded conditions.