Bell Gray Ball Clay

Description: Legacy ball clay

Oxide	Analysis	Formula
CaO	0.30%	0.02
MgO	0.30%	0.03
K2O	0.45%	0.02
Na2O	0.45%	0.02
TiO2	1.60%	0.07
Al2O3	30.22%	1.00
SiO2	55.51%	3.12
Fe2O3	0.98%	0.02
Cl	10.19%	n/a
Oxide Weight		303.13
Formula Weight		337.52

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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.

Data

% < 0.5 microns	56.0%
Drying Shrinkage	8.1
Water absorption	7.0% at cone 9
Dry M.O.R. (50% Silica)	440 psi
Firing Shrinkage	9.9% at cone 9

By Tony Hansen
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