FRITSCH PULVERISETTE 4 classic line - Manual (Page 49)

11 Examples of comminution tasks
Material
Feeding amount Material of grinding bowl
and balls
Grinding balls, St. x diam-
eter
Result
Feed size Grinding bowl size Grinding duration Final fineness
Ruby (stone)
140 g Cr-Ni steel 6 x 30 mm 100%
12 mm 250 ml 3 min < 250 µm
Titanium dioxide TiO
2
(dry and wet grinding in water)
40 g Cr-Ni steel 6 x 30 mm 100%
2 mm 250 ml 30 min < 40 µm
Titanium dioxide TiO
2
(wet grinding in water)
40 g / 50 ml water Cr-Ni steel 6 x 30 mm 100%
2 mm 250 ml 60 min < 10 µm
Coal (dry and wet grinding in water)
5 g Zirconium oxide 5 x 20 mm 100%
0.5 mm 80 ml 120 min < 15 µm
Aluminium oxide / silicon oxide
100 g WC + Co 15 x 20 mm 90%
0.1 mm 250 ml 90 min < 20 µm
Ferrovanadium
70 g WC + Co 5 x 30 mm 70%
3 mm 250 ml 20 min < 100 µm
Glass
50 g Agate 15 x 20 mm 100%
4 mm 250 ml 15 min < 90 µm
Silicon carbide (dry and wet grinding in water)
15 g WC + Co 5 x 20 mm 100%
3 mm 80 ml 30 min < 150 µm
Silicon carbide (dry and wet grinding in water)
15 g / 5 ml water WC + Co 5 x 20 mm 100%
3 mm 80 ml 45 min < 71 µm
Examples of comminution tasks
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