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TWVD Ball Clay

Description: WBB Devon Ball Clay Group 3

Oxide Analysis Formula
CaO 0.20% 0.01
K2O 2.60% 0.09
MgO 0.30% 0.02
Na2O 0.40% 0.02
TiO2 1.10% 0.04
Al2O3 32.20% 1.00
SiO2 53.00% 2.79
Fe2O3 1.00% 0.02
LOI 9.20%n/a
C 0.30%n/a
Oxide Weight 287.63
Formula Weight 317.82

Notes

Particle Size (e.s.d.)
125 microns - 0.30
10 microns - 97
2 microns - 85
1 microns - 76
Modulus of Rupture at 110C
Mn/M2 - 4.8
lbf/in2 - 700
Defloculant Required - (3:1 Na2SiO3(C.100):Na2CO3) - 0.8
Water Absorption
1120C - 0.5
1220C - 0.50
Shrinkage Dry to Fired
1120C - 14.50
1220C - 15.50
Reflectance 464nm
1120C - 66
1220C - 40
Refractoriness
Cone - 33, 1730C

Related Information

Links

Materials Ball Clay
A fine particled highly plastic secondary clay used mainly to impart plasticity to clay and porcelain bodies and to suspend glaze, slips and engobe slurries.
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.
Typecodes Materials used in Denmark
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