Customization: | Available |
---|---|
Certification: | CE, ISO |
Technique: | Calcined Kaolin |
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1. High brightness, particle size and super opacity, as pigments and fillers in paper industry, kaolin can improve the smoothness, gloss,coverage and opacity to reduce or eliminate TiO2 to cut down cost whilst maintaining key properties.
2. Low abrasion, effectively reducing knife consumption to cut down cost.
3. Favorable viscosity and good compatibility with various chemical agents.
UsesItem |
Unit |
Washed kaolin |
Calcined kaolin |
Clay |
SiO2 |
% |
45.2 |
53.4 |
63.3 |
Al2O3 |
% |
37.5 |
45.06 |
21.7 |
Fe2O3 |
% |
0.28 |
0.36 |
0.22 |
CaO |
% |
0.81 |
0.24 |
0.04 |
MgO |
% |
0.95 |
0.21 |
0.25 |
TiO2 |
% |
0.27 |
0.5 |
1.07 |
K2O |
% |
0.15 |
0.1 |
0.01 |
Na2O |
% |
2.2 |
0.12 |
0.01 |
Whiteness |
% |
80-90 |
80-90 |
80-90 |
Loss in ignition |
% |
14.13 |
13.36 |
Properties |
Index range |
Whiteness(R457,%) |
≥93min |
Particle size(-2μm,%) |
81±3 |
average grain size (μm) |
0.9±0.1 |
Screen residue(325mesh,%) |
≤0.005 |
oil absorption(g/100g) |
62.5±2.5 |
moisture(%) |
≤0.8 |
bulk density (kg/L) |
0.4-0.6 |
PH |
6.0-7.5 |
Item |
Kaolin clay |
SiO2(%) |
52±2 |
Al2O3(%) |
45±2 |
Fe2O3(%) |
<0.4 |
TiO2(%) |
<1.0 |
CaO(%) |
<0.4 |
MgO(%) |
<0.2 |
K2O(%) |
<0.04 |
Na2O(%) |
<0.1 |
MnO(%) |
<0.005 |