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Materials for Ceramics

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Bandy Tan

Alternate Names: Bandy Tan Ball Clay

Description: Ball clay

Oxide	Analysis	Formula
CaO	0.32%	0.02
K2O	1.64%	0.07
MgO	0.58%	0.06
Na2O	0.36%	0.02
TiO2	1.26%	0.07
Al2O3	24.38%	1.00
P2O5	0.03%	-
SiO2	61.21%	4.26
Fe2O3	1.20%	0.03
MnO	0.01%	-
LOI	8.67%	n/a
SO3	0.09%	n/a
Oxide Weight		380.68
Formula Weight		417.23

Notes

Relative Viscosity (1.2 Sp. Gr.):* 1.2
Casting Rate: (gms per 15 min/426 cm2):* 157
Water of Plasticity:* 27.1
% Dry Shrinkage:* 5.1
Dry M.O.R., psi:* 228

Cone 04 8 11
----
Fired Shrinkage:* 0.4% 3.2% 6.4%
Absorption:* 21.3% 13.8% 5.9%
M.O.R. psi:* 745 2910 5680

Thermal Expansion, Cone 8: .335% at 700C
P.C.E.: 30
pH: 5.5
Oil Absorption: 34
Bulk Density, lbs per cubic foot: 37-45
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
95% 85% 66% 42% 26% 15% 3%

*Specimens: De-aired, extruded, 50% ball clay, 50% flint

Related Information

Links

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

Frit Softening Point	30 PCE

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