×
|
Total carbonate calculated as CaCO3 (%)
|
≥ 98.5
|
|
Residual alkalinity Ca0 (%)
|
≤ 0.007
|
|
PH
|
≤ 9.0
|
|
Humidity (%)
|
≤ 0.35
|
|
Fe2O3 content (%)
|
≤ 0.05
|
|
45 um fineness (%)
|
≥ 99.8
|
|
125 um fineness (%)
|
≥ 98.88
|
|
Average grain size (um)
|
≤ 4.0
|
|
The residue does not dissolve in HCL (%)
|
0.005
|
|
Flax oil permeability (ml/100)
|
87.0 ± 3
|
|
DOP oil permeability (ml/100)
|
98.0 ± 3
|
|
Water permeability (ml/100)
|
60.0 ± 3
|
|
Bulk density (g/ml)
|
0.32
|
|
Whiteness (%)
|
95
|
2. Raw material source
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