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Bikaner Ball Clay

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

Notes

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

Related Information

Links

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.
By Tony Hansen
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