|Monthly Tech-Tip |
Alternate Names: English Standard Porcelain, Eng Stn Porc, Standard Porcelain China Clay
Description: A white burning high strength Cornish kaolin
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%).
The most fundamental clay mineral. This mineral is found in nature in its purest form as kaolin. How
Pure clay mineral, there are many brand names of varying purity and iron content.
A white burning kaolin from the UK, commonly used in porcelain bodies and as a glaze suspender. Sticky when wet, low plasticity.
Super Standard Porcelain
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.
|Pyrometric Cone Equivalent||33|
|By Tony Hansen|
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