Wear rate of yttrium zirconia ball，ceramic ball, ceramic beads

Yttrium zirconia ball is relatively wear-resistant among grinding balls, so the wear is naturally very low. The zirconia content of yttrium zirconia ball is 95%.

We loaded the yttrium zirconia ball and added clean water for self abrasion. After 24-hour self abrasion test, the data showed that the self abrasion was 4 parts per million, basically without loss.

How to avoid crushing and excessive wear of zirconia beads?

1. The filling amount of beads shall not exceed the upper limit (85%);

2. Beads of different materials shall be selected for sand mills with different linear speeds;

3. Select beads with appropriate density for slurry with different viscosity;

4. Do not mix beads of different materials;

5. Try to use beads with uniform particle size;

6. Keep low speed when cleaning the sand mill with beads; Mechanical speed regulation adopts inching and stepless speed regulation

Low speed zone is adopted (the recommended shaft speed is less than 1000rpm);

7. Regularly screen out old beads less than the lower limit;

8. Regularly check whether there are cracks or grooves at the positions of the sand mill separation device, discharge end cover and dispersion shaft

The existence of equal stress concentration area.

9. Use big brand zirconium beads, such as Sanxin zirconium beads.