Caoline mixture K2 (see No1); K4 (see No2&3)

*1: See our partice size analysis of the original sample with ANALYSETTE 22 NanoTec, on Meas.No 8767.

*2:

To avoid overpressure, we grinded always in steps of 3 minutes of grinding and 8 minutes of pausing time.

We grinded the sample for 2 hours. Because the results have been equal, a grinding for longer as 1 hour is not recommended.

*3: See our partice size analysis after 1h with ANALYSETTE 22 NanoTec, on Meas.No 8845.

After the second hour, we changed the balls to 0,1mm balls and grinded for further 4 hours. This will be shown in trial 1b.

*1: After 2hours of grinding (effectively 1 hour) with 1mm balls, we changed the balls to 0,1mm and took out about 12g of the sample/water mix (see separate bottle).

*2: See result of trial 1a.

*3: After the sixth hour, the fineness did only enhance a little. Therefore, we aborted the grinding after totally 6 hours.

*4: See our partice size analysis after 3h with ANALYSETTE 22 NanoTec, on Meas.No 8846 (1 hour of grinding with 0,1mm balls).

See our partice size analysis after 6h with ANALYSETTE 22 NanoTec, on Meas.No 8847 (after 4 hours of gringing with 0,1mm balls).

*1: See our partice size analysis of the original sample with ANALYSETTE 22 NanoTec, on Meas.No 8765.

*2:

To avoid overpressure, we grinded always in steps of 3 minutes of grinding and 8 minutes of pausing time.

We grinded the sample for 2 hours. Because the results have been equal, a grinding for longer as 1 hour is not recommended.

*3: See our partice size analysis after 1h with ANALYSETTE 22 NanoTec, on Meas.No 8835.

After the second hour, we changed the balls to 0,1mm balls and grinded for further 4 hours. This will be shown in trial 2b.

*1: After 2hours of grinding (effectively 1 hour) with 1mm balls, we changed the balls to 0,1mm and took out about 12g of the sample/water mix (see separate bottle).

*2: See result of trial 2a.

*3: After the sixth hour, the fineness did only enhance a little. Therefore, we aborted the grinding after totally 6 hours.

*4: See our partice size analysis after 3h with ANALYSETTE 22 NanoTec, on Meas.No 8833 (1 hour of grinding with 0,1mm balls).

See our partice size analysis after 6h with ANALYSETTE 22 NanoTec, on Meas.No 8985 (after 4 hours of gringing with 0,1mm balls).

*1: See our partice size analysis of the original sample with ANALYSETTE 22 NanoTec, on Meas.No 8765.

*2: With the reduced speed of only 500RPM, a programmed pause for cooling is not necessary.

We grinded the sample without breaks for 2 hours.

*3: See our partice size analysis after 1h with ANALYSETTE 22 NanoTec, on Meas.No 8994.

See our partice size analysis after 2h with ANALYSETTE 22 NanoTec, on Meas.No 9002.

After the second hour, we changed the balls to 0,1mm balls and grinded for further 2 hours. This will be shown in trial 3b.

*1: See our partice size analysis of the original sample with ANALYSETTE 22 NanoTec, on Meas.No 8765.

*2: With the reduced speed of only 500RPM, a programmed pause for cooling is not necessary.

*3: After 4 hour of grinding, we received an equal result compared to 3 hours of grinding. Because of that, we aborted the grinding after 4 hours.

See our partice size analysis after 3h with ANALYSETTE 22 NanoTec, on Meas.No 8991.

By grinding these material with lower speed, a more comminute character of grinding might be present with the 0,5mm balls. This way, the sample shows a much better fineness within less time.

To determine the fineness of the particles < 1µm, a calculation by Mie theory is necessary. Because we haven’t got the right values, we have chosen to use 1,50 as refraction index. The truth value might show finer results.