SKD Ball Clay

Description: Devon Standard Ball Clay

Oxide	Analysis	Formula
CaO	0.20%	0.01
K2O	1.60%	0.05
MgO	0.30%	0.02
Na2O	0.20%	0.01
TiO2	1.00%	0.04
Al2O3	32.90%	1.00
SiO2	50.00%	2.58
Fe2O3	1.20%	0.02
LOI	12.60%	n/a
C	1.60%	n/a
Oxide Weight		270.97
Formula Weight		315.81

Notes

Particle Size (e.s.d.)
125 microns - 0.50
10 microns - 98
2 microns - 85
1 microns - 75
Modulus of Rupture at 110C
Mn/M2 - 5.9
lbf/in2 - 850
Defloculant Required - (3:1 Na₂SiO₃(C.100):Na₂CO₃) - 0.4
Water Absorption
1120C - 7.0
1220C - 0.40
Shrinkage Dry to Fired
1120C - 14.50
1220C - 17.00
Reflectance 464nm
1120C - 77
1220C - 71
Refractoriness
Cone - 33, 1730C

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
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