Spinks Special Clay

Oxide	Analysis	Formula
CaO	0.22%	0.01
K2O	0.28%	0.01
MgO	0.27%	0.03
Na2O	0.14%	0.01
TiO2	1.52%	0.07
Al2O3	27.17%	1.00
P2O5	0.11%	-
SiO2	59.16%	3.70
Fe2O3	1.15%	0.03
MnO	0.02%	-
LOI	10.16%	n/a
SO3	0.02%	n/a
Oxide Weight		338.02
Formula Weight		376.33

Notes

Relative Viscosity (1.2 Sp. Gr.):* 1.27
Casting Rate: (gms per 15 min/426 cm2):* 158
Water of Plasticity:* 17.07
% Dry Shrinkage:* 4.9
Dry M.O.R., psi:* 593

Cone 04 8 11
----
Fired Shrinkage:* 0.1% 1.3% 1.2%
Absorption:* 15.9% 13.6% 13.4%
M.O.R. psi:* 1427 3901 3970

Thermal Expansion, Cone 8: .397% at 700C
P.C.E.: 32
pH: 4.8
Oil Absorption: 35
Bulk Density, lbs per cubic foot: 34-39
Particle Size, Microns: 20 10 5 2 1 0.5 0.2
96% 92% 82% 64% 47% 29% 7%

*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.

By Tony Hansen
Follow me on

Got a Question?

Buy me a coffee and we can talk