Experiment 1
Conditions: Charge of 1.0g of biotite
mica, passed through 400 μm aperture sieve; 10 ml of propan-2-ol.
Ground for 10 minutes with corundum grinding pellets.
Result:1.0g of dried product recovered. Average diameter of
product was 5 μm, Largest particle present was 10 μm.
Experiment 2
Conditions:Charge of 2.0g of graded Belgian optical glass silica
sand of particle size 285 μm ± 15 μm; 10 ml of water. Ground for 10
minutes with corundum grinding pellets
Result: 2.0g of dried product recovered. Average diameter of
product was 6 μm. Largest particle size was 14 μm.
