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Thomas Ball Clay

Oxide Analysis Formula
CaO 0.06% 0.00
K2O 0.40% 0.02
MgO 0.20% 0.02
Na2O 0.08% 0.00
TiO2 1.60% 0.08
Al2O3 26.50% 1.00
SiO2 59.40% 3.80
Fe2O3 1.02% 0.02
LOI10.60%
Oxide Weight 343.57
Formula Weight 384.30

Notes

Crude Color: Brown
Dry M.O.R. (psi 50% clay/50% flint, cast bars): 511
Wet Sieve Residue, +200 mesh (%): 0.31
Water of Plasticity (%): 36
Linear Dry Shrinkage (%): 7.26
Solubles Sulfates (ppm): 283
Filtration (ml): 26
Specific Surface Area (sq meters per gram): 19.8
CEC/MBI (meq/100 ml): 10.5
pH: 5.3
PCE: 31

Firing Shrinkage (%) Cone 04: 5.9 Cone 3: 7.0 Cone 11: 8.0
Absorption (%) 16.2 10.8 4.0

Particle Size (% finer than):
50 microns: 100
20: 96
10: 93
5: 85
1: 65
0.5: 54

Related Information

Links

Materials Cooley No. 2 Ball Clay
Materials Ball Clay
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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