LM1 Ball Clay

Description: WBB Devon Ball Clay Group 1

Oxide	Analysis	Formula
CaO	0.10%	0.01
K2O	1.80%	0.06
MgO	0.30%	0.02
Na2O	0.20%	0.01
TiO2	0.90%	0.03
Al2O3	33.90%	1.00
SiO2	49.40%	2.47
Fe2O3	1.00%	0.02
LOI	12.40%	n/a
C	1.80%	n/a
Oxide Weight		263.58
Formula Weight		307.20

Notes

Particle Size (e.s.d.)
125 microns - 0.40
10 microns - 98
2 microns - 84
1 microns - 74
Modulus of Rupture at 110C
Mn/M2 - 3.9
lbf/in2 - 570
Defloculant Required - (3:1 Na₂SiO₃(C.100):Na₂CO₃) - 0.3
Water Absorption
1120C - 9.0
1220C - 1.00
Shrinkage Dry to Fired
1120C - 14.00
1220C - 17.50
Reflectance 464nm
1120C - 72
1220C - 57
Refractoriness
Cone - 33, 1730C

Related Information

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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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