China Clay Powder

DESCRIPTION

RESULTS

SIO2

55 to 58%

Al2o3

33 to35%

Fe2O3

0.1%Max

TiO2

Traces

Loss of Ignition

4.0% to 7.05

Moisture (I.R.moisture Blance)

4.0% max

Water Absorption

38 to 44%

Bulk density (Tapped 50 Times)

0.38  to 0.45 gm/cc

pH Value (2% aqueous Slurry)

5.0 to 6.5

Average Particle Size

5.0 to 6.0 Micron

Residue on 500 Mesh (Wet analysis

1 % Max

Whiteness (Compared to 100 % Mgo.)

92% Min.

Surface Area

8 to10 sq.m./cc

Chemical Analysis

% By Wt.

Mineralogical Analysis

% By Wt.

SiO2

48%

Kaolinite

88 to 89.97%

Al2O3

35 to 35.93%

Orthoclase

1 to 1.13 %

Fe2O3

0.60 to 0.63 %

Albite

0.50 to 0.58 %

TiO2

0.70 to0.75 %

Haematite

0.60 to 0.65 %

CaO

0.40 to 0.47 %

Calcite

0.80 to 0.87 %

MgO

0.15 to 0.17 %

Magnesite

0.30 to 0.36 %

K2O

0.20 to 0.23 %

Rutile

0.70 to 0.73 %

Na2O

0.05 to 0.07 %

Quartz

5 to 5.71 %

Loss of Ignition

12 to 12.83 %

Plastic and Unfired Characteristic.

Colour

White

Plasticity by Feel

Moderate

Water of Plasticity

32 to 32.64 %

Atterberg's Number

12 to 13 %

Dry Linear Shrinkage

3.0 to 3.5 %

Dry Modulus of Rupture

9 to 9.15 in Kg. / cm2

   (White 50 % Quartz)

120 to 130 LBS/in2

pH Value(20% Suspension)

7 to 7.06

Light Reflecatance Value

80 to 82 %

  (at 5040 A Degree)

Grit Content (>44 Microns

0,60 to 0.70%

Particle Size Distribution

Grain Size in Micron

% By Wt.

>25

2to 2.50 %

<25

97 to 97.50%

<15

92 to 93 %

<10

85 to 87.75 %

<5

75 to 77.25 %

<2

65 to 68 %

<1

62 to 65 %

< 0.5

60 to 65.75 %