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Tennessee #9 Ball Clay

Alternate Names: Tenn #9, Tennessee #9

Oxide Analysis Formula
CaO 0.20% 0.01
K2O 1.30% 0.04
MgO 0.30% 0.02
Na2O 0.20% 0.01
TiO2 3.00% 0.12
Al2O3 31.50% 1.00
SiO2 53.20% 2.87
Fe2O3 0.60% 0.01
LOI10.10%
Oxide Weight 292.40
Formula Weight 325.25

Notes

Physical Properties
===================
Water of Plasticity: 29.9%
% Dry Shrinkage: 4.7
Dry M.O.R. (50:50 ball clay:silica, psi): 550
pH: 4.1
M.B.I. (meq/100g): 6.5
Specific Surface Area (sq-meter/g): 19.7
Soluble sulphur SO4: Low

P.C.E.: 33

Particle Size, Microns: 20 10 5 2 1 0.5
(% finer than) 97% 88% 83% 69% 62% 49%

Fired Properties
================
Cone 5 10
Total Shrinkage: 11.0% 13.9%
Absorption: 11.6% 5.8%

*This info is from a data sheet from Jan 2013

Related Information

Links

Materials RG1 Ball Clay
Materials Ball Clay
Suppliers K&T Clays
Suppliers Imerys
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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