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Bell Gray Ball Clay
Description: Legacy ball clay
| Oxide | Analysis | Formula | |
|---|---|---|---|
| CaO | 0.30% | 0.02 | |
| MgO | 0.30% | 0.03 | |
| K2O | 0.45% | 0.02 | |
| Na2O | 0.45% | 0.02 | |
| TiO2 | 1.60% | 0.07 | |
| Al2O3 | 30.22% | 1.00 | |
| SiO2 | 55.51% | 3.12 | |
| Fe2O3 | 0.98% | 0.02 | |
| Cl | 10.19% | n/a | |
| Oxide Weight | 303.13 | ||
| Formula Weight | 337.52 | ||
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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. |
|---|
Data
| % < 0.5 microns | 56.0% |
|---|---|
| Drying Shrinkage | 8.1 |
| Water absorption | 7.0% at cone 9 |
| Dry M.O.R. (50% Silica) | 440 psi |
| Firing Shrinkage | 9.9% at cone 9 |
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