Recorded result
- D90
- 1 µm
Particle sizes for the recorded sample and sampling time.
Sample assessment
This kaolin was already fine at the median: incoming D50 was 0.4 µm while D90 was 3 µm. The practical question is how the coarser dispersed fraction changes in a water-based charge containing sodium hexametaphosphate. Nylon contact and mixed zirconia-ball sizes were the tested configuration.
Recorded objective
Finer material, with no numerical acceptance limit recorded.
Equipment and selection
The source identifies XQM family. The related TENCAN product association is Vertical square planetary ball mill. 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 vertical planetary family; nylon jar; 80 g kaolin; 320 mL water and 0.4 g sodium hexametaphosphate; setting 580; 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 initial kaolin distribution was D50 = 0.4 µm and D90 = 3 µm. The wet charge used zirconia balls in three sizes: 5 mm at 30%, 3 mm at 40% and 1 mm at 30%; the record does not state whether these percentages represent mass or another basis. Five samples were taken at ten-minute intervals. The duration field records 50 minutes and the final result field states D90 = 1 µm. Intermediate size results and a final D50 were not supplied.
Interpretation
The demonstrated improvement concerns D90, which declined from 3 to 1 µm in the reported outcome. The already fine initial D50 makes it especially useful to follow the coarse portion of the distribution. No final median can be inferred from the lower D90. The formulation combines dilution, dispersant and mixed ball sizes, so this record cannot identify which adjustment contributed most. It also cannot demonstrate that a smaller primary particle size was produced rather than changes in dispersed agglomerates.
Practical precautions
Confirm the ball-percentage basis and record slurry recovery. Preserve the same dispersion protocol for incoming and milled kaolin, and retain each ten-minute sample if the objective is to locate an efficient stopping point.
TENCAN alternatives to evaluate
TENCAN Laboratory Full-Directional Planetary Ball Mill: Evaluate a QXQM arrangement if a repeat shows nonuniform kaolin suspension exposure or deposits. Keep water, dispersant, ball fractions and analysis dispersion fixed to test whether changing orientation improves the recorded D90 response. This is a recommendation for a new comparison, not an observed result of this trial.
Endpoint context: D90 = 1 µm in the result field; total recorded run 50 minutes, exact sample association unspecified.
Tested equipment association only: XQM family; exact machine variant not inferred. Alternative products are evaluation candidates in the body only.
About this trial
TENCAN laboratory trial, 2021. Observations above come from this experimental record; selection considerations and proposed comparisons are engineering interpretation. Results apply to this sample and recorded conditions.