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Kaolin
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Kaolin

Description:

1.      Specifications:


Particles: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm

Sand:16-30mesh,30-60mesh,60-80mesh,80-120mesh(Mainly for precision casting.)

Powder: 200mesh,325mesh


 2.      Physical properties


Whiteness

%

≥85.0

325 mesh Screen residue 

 

%

≤0.01

Density 

g/cm³

2.62

Average particle diameter 

a

0.5

Mohs hardness

/

2

Moisture

%

≤0.4



 3.      Chemical indicators:

Item

KDH45

KDH45

KDH44

KDH44

KDH43

KDH42

KDH40

KDH36

A

B

A

B

AL 2 O 3 %   

46-48

45-48

44-48

44-48

43-48

42-46

40-46

36-42

Fe2O3 %   (max)

1.0

1.15

1.3

1.5

2.0

2.5

3.0

3.5

Ti02  %    (max)

0.8

0.8

0.9

0.9

1.0

1.1

1.2


K20+Na20 %   (max)

0.3

0.3

0.4

0.4

0.4

0.5

0.5

0.6

Ca0+Mg0 %   (max)

0.5

0.5

0.5

0.5

0.5

0.6

0.7

0.8

Bulk density g/cm3(min)

2.58

2.55

2.52

2.50

2.45

2.40

2.37

2.30

Refractorines °C (min)

1780

1770

1760

1750

1730

1710

1710

1680

Impurities %  (max)

0.5

1.5

2.0

2.5

3.0

3.5

4.0

5.0

 4.      Applications:

Calcined kaolin is mainly used for manufacturing high-quality refractory products, refractory castable, sagger, kiln furniture, crucibles, ceramic fiber,  precision casting sand, ceramics products, etc