Calcined kaolin for paper making

As calcined kaolin pigment, GB series product with high brightness, excellent light scattering property and low abrasion value can be applied to filing and coating(the most applicable area) papermaking industry. Its value is as following:

1. Replace titania or other high cost filling pigments and lower production cost.
2. Improve paper property, such as smoothness, glossiness and opacity.
3. Improve ink absorbency and print fitness.
4. Excellent compatibility with various additives.
5. Compared with other pigments, the Solids content (Viscosity:500mPa·S) of its dispersion is higher (about 78.6%), so it can be compounded in high solid content coating and is applicable to high speed coatings.

Typical Physical Properties:

Item	GB-CK98
Brightness(T457)	93% min
Medium particle Size (micron)	0.8
Abrasion Value (mg/100,000rev)	25-40
Refractivity	1.62
Screen residue (325 mesh %)	0.003 max
Oil Absorbency (g/100g)	605
Dispersion (micron)	55 max
pH	5.5-7.0
Bulk Density (kg/m3)	330
Moisture (%)	0.8 max

Typical Chemical Properties:

SiO2(%)	Al2O3 (%)	Fe2O3 (%)	TiO2 (%)	CaO(%)	MgO(%)	CuO(%)	K2O(%)	Na2O(%)	MnO(%)
522	452	0.50max	1.5max	0.4max	0.2max	0.004max	0.05max	0.15max	0.004max