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Oxide | Analysis | Formula | |
---|---|---|---|
SiO2 | 56.00% | 3.22 | |
Al2O3 | 29.50% | 1.00 | |
Fe2O3 | 0.65% | 0.01 | |
TiO2 | 0.75% | 0.03 | |
MgO | 0.50% | 0.04 | |
CaO | 0.40% | 0.02 | |
Na2O | 0.80% | 0.04 | |
K2O | 0.50% | 0.02 | |
LOI | 12.00% | n/a | |
Oxide Weight | 308.07 | ||
Formula Weight | 350.08 |
Very plastic ball clay from India. Somewhat thixotropic in slurries.
Colour: White
Fired Colour: Creamish/Off White
Plasticity: 30%
Slaking: Moderate
Residue Over 44 Microns: 0.5-1.5
Particle Size > 2 Micron: 30-34
Particle Size > 10 Micron: 9-13
% Dry Shrinkage: 4-6
% Fired Shrinkage: 8-10
% Total Shrinkage: 12-14
Pyrometric Cone Equivalent: 28-30
Typecodes |
Ball Clay
Ball clays are abundant and very plastic and are used in all types of plastic forming bodies. They are not as white-burning or refractory as kaolins but lower in iron and fluxes than bentonites. |
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