Jackson Ball Clay

Description: Tennessee Ball Clay

Oxide	Analysis	Formula
CaO	0.20%	0.01
K2O	0.90%	0.03
MgO	0.30%	0.03
Na2O	0.20%	0.01
TiO2	2.50%	0.11
Al2O3	30.20%	1.00
SiO2	54.50%	3.06
Fe2O3	0.80%	0.02
LOI	10.70%	n/a
Oxide Weight		302.62
Formula Weight		338.88

Notes

A fine-grained, high alumina Ball Clay known for its excellent fired color, strength and plasticity. Jackson is very popular in both casting and plastic formed bodies. Ceramic applications include dinnerware, sanitaryware, artware, electrical porcelain and refractories. It is also popular in emulsion applications.

Physical Properties
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Water of Plasticity: 32.1%
% Dry Shrinkage: 5.0
Dry M.O.R. (50:50 ball clay:silica) psi: 604
pH: 4.2
M.B.I. (meq/100g): 7.6
Specific Surface Area (sq-meter/g): 23.3
Soluble sulfur SO₄: Low
P.C.E.: 33

Particle Size, Microns: 20 10 5 2 1 0.5 0.2
(% finer than) 97% 92% 87% 76% 67% 55% 39%

Fired Properties
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Cone 5 10
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Total Shrinkage: 12.7% 15.6%
Absorption: 11.6% 5.0%

*This info is from a data sheet dated Jan 2013

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Materials	Ball Clay A fine particled highly plastic secondary clay used mainly to impart plasticity to clay and porcelain bodies and to suspend glaze, slips and engobe slurries.
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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