Standard Porcelain Kaolin

Alternate Names: English Standard Porcelain, Eng Stn Porc, Standard Porcelain China Clay

Description: A white burning high strength Cornish kaolin

Oxide	Analysis	Formula
CaO	0.10%	-
K2O	1.60%	0.05
MgO	0.30%	0.02
Na2O	0.10%	-
TiO2	0.03%	-
Al2O3	37.00%	1.00
SiO2	48.00%	2.20
Fe2O3	0.60%	0.01
LOI	12.40%	n/a
Oxide Weight		241.85
Formula Weight		276.08

Notes

A popular kaolin from the UK.

Particle Size Distribution:
>53 microns: 0.03 max
>10 microns: 4
<2 microns: 70

Modulus of Rupture, Kgf/cm2:
At 80% Relative Humidity: 14.0
Dried at 110C: 31.7

Casting Rate @ 63% solids (mm2/min): 0.35
% P84 Deflocculant Required for 5 Poise Slip: 0.75

1180C 1280C 1410C
Fired Absorption: 15% 6% 1%
Fired Shrinkage: 9% 14% 17%
Brightness: 91 88 77

A white burning UK kaolin often used in porcelains. If unavailable find a substitute having low Fe₂O₃ and low TiO2. If plasticity suffers augment it with a small addition of white burning bentonite in the body recipe (e.g. 1-2%).

Related Information

Links

Minerals	Mica See Muscovite.
Minerals	Kaolinite The most fundamental clay mineral. This mineral is found in nature in its purest form as kaolin. How
Materials	Grolleg Kaolin A white burning kaolin from the UK, commonly used in porcelain bodies and as a glaze suspender. Sticky when wet, low plasticity.
Materials	Super Standard Porcelain
Materials	NSC Kaolin
Materials	Remblend Kaolin
Materials	Treviscoe Kaolin
Materials	English Kaolin
Materials	Kaolin The purest of all clays in nature. Kaolins are used in porcelains and stonewares to impart whiteness, in glazes to supply Al2O3 and to suspend slurries.
Typecodes	Kaolin Pure clay mineral, there are many brand names of varying purity and iron content.

Data

Pyrometric Cone Equivalent	33

By Tony Hansen
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