Zirconium oxide

To achieve a fineness of 100-300 µm, we prepared a grinding test with a gap setting of 0,3 mm.

Usually, particles should be < 2 cm for grinding, in this case, a support of feeding did not need to be supported with a brush or a stick, sample did not jam in the feeding funnel.

The complete bag of sample got ground within 2 minutes. After grinding, the grinding chamber has been minimal polluted with fine ground sample dust. No residues have been sticking where the gap will be formed between the disks. For this, even higher amounts of sample can be ground without problems.

Cleaning of grinding chamber has been performed rapidly by vacuuming with a soft brush.

Because sample only needs to be ground to < 300 µm in one dimension to pass the gap between the disks, longer particles might be found after grinding.

To determine the particle size, we used our Vibratory Sieve Shaker ANALYSETTE 3 Pro and test sieves of 100 µm and 315 µm mesh. After sieving an aliquot of sample, it has shown that 65 % of sample use to be between 100-315 µm; only 6 % of sample use to be > 315 µm and 29 % of sample are smaller as desired.

Probably with a wider gap setting (e.g. 0,4-0,5 mm), output of desired fraction can be maximized.