The product with ultrafine particle size grade, uniform particle size distribution, high whiteness, moderate oil absorption, excellent flatting effect and opacity. It has good tinting strength in dry powder products, excellent suspension and dispersion in solvent. It can be partly replaced titanium dioxide to reduce cost.
Main application:
Paint, paper making and rubber.
Typical Properties:
|
Properties |
Unit |
Standard |
|
Whiteness |
R457, % |
≥94 |
|
Particle size |
-2μm, % |
85-87 |
|
Average particle size |
D50, μm |
0.85±0.1 |
|
Screen residue |
325 mesh, % |
≤0.005 |
|
Oil absorption |
g/100g |
≥64 |
|
Dispersion |
Hegman,μm |
≤50 |
|
Moisture |
% |
≤0.5 |
|
pH |
------ |
6.0-8.0 |
Chemical Composition:
|
SiO2（%）
|
Al2O3（%） |
Fe2O3（%） |
TiO2（%） |
CaO（%） |
MgO（%） |
K2O（%） |
Na2O（%） |
MnO（%） |
|
52±2 |
45±2 |
≤0.8 |
≤1.5 |
≤0.5 |
≤0.3 |
≤0.1 |
≤0.2 |
≤0.004 |