Sanitaryware / Fine Fire Clay / Kaolin

Kaolin

Product Benefits

Kaolin is a relatively pure clay, composed essentially of kaolinite.  It differs from ball clays in that it contains no organic matter and is formed in situ.
Kaolin is used to modify the ball clay properties.

The main properties given to the vitreous china body are:

  • Cast rate
  • Rheological stability
  • Thickness forming
  • Mechanical strength
  • Improves the whiteness of the body
  • Adds alumina and improves resistance to deformation

Technical Details

Kaolin Country of Origin Chemical Analysis % Carbon Modulus of Rupture (Dried @ 110°C) MPa Residue %< Particle Size %< % Water Absorption
Products SiO2 AI2O3 Fe2O3 Alkalis LOI 53µm 63µm 10µm 2µm 1100°C 1200°C
Kaolin HPC UK 48.3 36.4 0.9 2.5 11.6 0.6 0.03 0.1 95 49 32 10
Kaolin CC UK 48.1 36.3 0.8 2.9 11.8 0.9 0.02 0.1 96 53 26 10
Kaolin 31 UK 48.7 35.5 0.8 3 11.6 1.1 0.03 0.1 94 51 29 8.5
SanKa L DE 47.7 36.1 1.4 1.5 12.1 0.1 1 0.1 81 35 8
SanKa 50 CZ 59.5 28.5 0.5 0.8 9.9 0.1 0.5 0.1 66 21 29
GWFFC DE 64.9 24.7 1 2.1 6.1 >20  – 6.9
Starcast K-CR USA 44.90 38.70 0.30 13.7  – 88 53
Starcast K-F-CR USA 44.85 38.65 0.34 13.74  –  – 91 55
SanBlend K USA 44.80 38.60 0.32 13.70 89 53

 

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