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Todd Light Ball Clay

Oxide Analysis Formula
CaO 0.50% 0.03
K2O 1.20% 0.05
MgO 0.50% 0.05
Na2O 0.10% 0.01
TiO2 1.40% 0.07
Al2O3 27.40% 1.00
SiO2 57.30% 3.55
Fe2O3 1.10% 0.03
LOI10.50%
Oxide Weight 333.18
Formula Weight 372.26

Notes

A fine-grained ball clay with excellent strength and plasticity Todd Light is very popular both in casting and plastic formed bodies Applications include sanitary ware, electrical porcelain and dinnerware.

Physical Properties
==================
Water of Plasticity*: 37.0%
% Dry Shrinkage*: 6.5
Dry M.O.R., psi:* 825
pH: 4.4
C.E.C., meq/100g: 11.0
Specific Surface Area, sq metre/g: 24.4
Soluble sulfur+: Low

P.C.E.: 32

Particle Size, Microns: 20 10 5 2 1 0.5 0.2
(% finer than) 99% 97% 93% 81% 72% 56% 35%

Fired Properties
================
Cone 5 10
----
Total Shrinkage: 13.0% 14.5%
Absorption: 10.0% 1.0%

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

Related Information

Links

Materials Ball Clay
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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