Our calcined kaolin has good viscosity and dispersion ,and can well improve the effect of vulanization,increase the addition for its good crosslink with rubber and paper.It has a serie of unique properties such as the acid resistivity,chemical stability,heat durability,incombusibility.It has an increasingly wide spread applicants in various fields-asbestos substitute products in rubber and paper.
Main physical index
|
Item
|
(Paper-making class)
|
|
White degree(F457)%
|
≥94
|
|
Granularity(-2µm,%
|
82~86
|
|
Visual screening
|
≤0.003
|
|
Refractive index
|
1.62
|
|
Oil absorption value(g/100g)
|
60±5
|
|
PH value
|
6.0-8.0
|
|
Dispersion(µm)
|
≤45
|
|
Moisture(%)
|
≤0.5
|
Main chemical index
|
SiO2
(%)
|
AL2O3
(%)
|
Fe2O3
(%)
|
TiO2
(%)
|
Cao
(%)
|
MgO
(%)
|
K2O
(%)
|
Na2O
(%)
|
MnO
(%)
|
|
53±2
|
44±2
|
<0.50
|
<0.8
|
<0.5
|
<0.3
|
<0.1
|
<0.2
|
<0.004
|
