|
Physical and chemical properties:
|
|
Physical and chemical properties
|
600 mesh
|
800 mesh
|
1250 mesh
|
2000 mesh
|
2500 mesh
|
3000 mesh
|
|
Whiteness (%)
|
≥90
|
≥92
|
≥94
|
≥94
|
≥94
|
≥94
|
|
Particle size distribution (D98)
|
20μm
|
15μm
|
10μm
|
6μm
|
5μm
|
4μm
|
|
325 mesh screenings (%)
|
≤0.1
|
≤0.01
|
no
|
no
|
no
|
no
|
|
Oil absorption
|
≤30-50
|
|
Bulk density g/cm3
|
0.3-0.35
|
0.28-0.30
|
0.17-0.20
|
0.15-0.17
|
0.13-0.15
|
0.11-0.13
|
|
Moisture (%)
|
≤0.5
|
|
PH value
|
7-9
|
|
Loss on ignition(1000°C)(%)
|
≤8
|
|
Wet whiteness (%)
|
≥38
|
≥48
|
≥50
|
≥55
|
-
|
-
|
|
Average particle size(%)
|
12.0
|
8.0
|
5.5
|
3.5
|
3.0
|
2.5
|
|
Maximum grain size (%)
|
30.0
|
20.0
|
13.0
|
9.0
|
8.0
|
7.0
|
|
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