Paper coating grade calcined kaolin

Chemical substances

kaoin / calcined

Appearance

white powder

Packing

25kg woven bag/ kraft paper bag, 1000kg sack

Main features

low particle size, high whiteness, goood fluidity, goood surface smoothness, high luster, good absorption of printing ink, good hiding power

Range of application

Used in paper making coating.

NO.

Item

Unit

Physical Index

LJ-1

LJ-2

1

Whiteness

%

≥90

≥90±2

2

325-mesh Residue on sieve%

%

0.004

≤0.005

3

Refractive index

%

1.62

1.62

4

Water content

%

0.5

0.5

5

pH-value of aqueous suspension

6.5-7.2

6.57.2

6

Oil absorption(depend on different fineness)

%g/100g

60±5

60±5

7

2um content

%

≥90±2

≥78

SiO2(%)

Al2O3(%)

Fe2O3(%)

TiO2(%)

CaO(%)

MgO(%)

K2O(%)

Na2O(%)

L.O.L(%)

50±2

45±2

0.5

1.1

0.3

0.2

0.06

0.2

0.5