Super Kaolin

500
Mesh
Washed Kaolin

325
MeshWashed Kaolin

Crude
Kaolin

Quality Analysis

XKC-90

XKC-80

XKC-70

XKC-60

XKC-500

XKC-325C

XKC-325Y

XKC-YG1

XKC-YG2

Chemical
Analysis

SiO2(%)

≤49

≤49

≤49

≤50

≤49

≤50

≤50

≤74

≤74

Al2O3(%)

37.0±1

36.5±1

36.5±1

36±1

36.5±1

36±1

36±1

18±2

18±2

Fe2O3(%)

≤0.30

≤0.30

≤0.35

≤0.35

≤0.35

≤0.20

≤0.35

≤0.30

≤0.30

K2O(%)

1.56

1.80

1.90

2.05

1.95

2.00

2.50

2.5±0.8

3.5±0.8

Na2O(%)

0.14

0.18

0.15

0.15

0.06

0.15

0.15

0.10

0.17

TiO2(%)

0.03

0.03

0.03

0.03

0.03

0.03

0.03

0.05

0.05

CaO(%)

0.10

0.10

0.10

0.10

0.10

0.10

0.10

0.09

0.10

MgO(%)

0.15

0.15

0.15

0.15

0.15

0.15

0.15

0.30

0.30

L.O.I.(%)

14.0

13.7

13.5

12.30

12.33

12.35

12.30

5.60

4.30

Grit
Distribution

>44μm(%)

∕

∕

∕

∕

≤0.1

≤1

≤1

Elutriating
Rate for 325Mesh Kaolin
28±3

/

>25μm(%)

∕

∕

∕

∕

≤1.5

/

/

/

<2μm(%)

≥90

84±4

74±4

64±4

≤35

≥25

≥25

/

Natural
Whiteness

%

80

80

80±2

80±2

≤80

≥81

≥80±2

≥80

≥78

Fired
Whiteness

%(1280℃)

≥93

≥93

≥91

≥91

≤91

≥91

≥90

≥83

≥81

Moisture
Content

%

≤15

≤15

≤15

≤15

≤15

≤15

≤15

≤17

≤17

PH Value

∕

6.0～6.5

6.0～6.5

6.0～6.5

6.0～6.5

6.0～6.5

6.0～6.5

6.0～6.5

6.0～6.5

6.0～6.5

Plasticity Data

∕

0.80

0.68

0.66

0.65

0.63

0.58

0.58

/

/

Modulus of
Rupture

Mpa(105℃)

3.4

1.60

1.50

1.40

1.32

1.30

1.30

/

/

Linear
Shrinkage

Dried(105℃)

7.9

7.6

7.3

7.2

7.3

7.2

7.2

/

/

Fired(1280℃)

11.0

10.5

10.0

8.3

8.7

8.3

8.4

/

/

Total(%)

18.8

18.0

16.5

15.8

15.8

15.5

15.5

/

/