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Alternate Names: Fayles Blue Ball Clay
Description: Ball Clay
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.23% | 0.01 | |
| K2O | 2.90% | 0.10 | |
| MgO | 0.77% | 0.06 | |
| Na2O | 0.89% | 0.05 | |
| TiO2 | 1.00% | 0.04 | |
| Al2O3 | 31.00% | 1.00 | |
| SiO2 | 52.00% | 2.85 | |
| Fe2O3 | 1.40% | 0.03 | |
| LOI | 9.20% | n/a | |
| Oxide Weight | 296.75 | ||
| Formula Weight | 326.82 | ||
Particle Size (e.s.d.)
5 microns - 96
2 microns - 88
1 microns - 79
0.5 microns - 62
0.1 microns - 14
Rational Analysis (mica convention)
Clay 44%
Micaceous matter 35%
Quartz 15%
Modulus of Rupture at 100C
kgf/cm2 - 80.9
Refractoriness
PCEe - 32-33
| 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. |
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