RBV Ball Clay

Description: WBB Devon Ball Clay Group 4

Oxide	Analysis	Formula
CaO	0.20%	0.02
K2O	2.20%	0.10
MgO	0.30%	0.03
Na2O	0.30%	0.02
TiO2	1.40%	0.08
Al2O3	23.40%	1.00
SiO2	64.90%	4.71
Fe2O3	0.80%	0.02
LOI	6.50%	n/a
C	0.20%	n/a
Oxide Weight		407.56
Formula Weight		436.83

Notes

Particle Size (e.s.d.)
125 microns - 0.60
10 microns - 96
2 microns - 75
1 microns - 65
Modulus of Rupture at 110C
Mn/M2 - 4.6
lbf/in2 - 670
Defloculant Required - (3:1 Na₂SiO₃(C.100):Na₂CO₃) - 0.5
Water Absorption
1120C - 1.0
1220C - 0.50
Shrinkage Dry to Fired
1120C - 11.50
1220C - 12.50
Reflectance 464nm
1120C - 64
1220C - 47
Refractoriness
Cone - 31, 1690C

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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