Bell Dark Ball Clay

Description: Tennessee Ball Clay

Oxide	Analysis	Formula
CaO	0.20%	0.01
K2O	0.70%	0.03
MgO	0.40%	0.04
Na2O	0.20%	0.01
TiO2	2.10%	0.10
Al2O3	26.80%	1.00
SiO2	58.90%	3.73
Fe2O3	1.10%	0.03
LOI	10.30%	n/a
Oxide Weight		344.06
Formula Weight		383.57

Notes

A very plastic ball clay used in industrial and hobby clay bodies of all types. Primary applications are dinnerware and artware.

Physical Properties
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Water of Plasticity: 33.5%
% Dry Shrinkage: 6.1
Dry M.O.R. (50:50 ball clay:silica) psi:* 560
pH: 4.1
M.B.I. meq/100g: 8.0
Specific Surface Area (sq-metre/g): 24.1
Soluble sulfur+: Low

P.C.E.: 38

Particle Size, Microns: 20 10 5 2 1 0.5 0.2
(% finer than) 99% 94% 85% 75% 63% 52% 38%

Fired Properties
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Cone 5 10
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Total Shrinkage: 12.7% 15.6%
Absorption: 12.5% 6.1%

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*Extruded, 50% ball clay, 50% flint
+Low-trace to 150, Med-150-400, High-450+
**50% Clay, 50% Nepheline Syenite

*This information is from a data sheet dated Jan 2013.

Related Information

Links

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.

Data

Dry M.O.R. (50% Silica)	1482C

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