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Description: Thailand Ball Clay
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.20% | 0.02 | |
| K2O | 2.20% | 0.11 | |
| MgO | 0.40% | 0.05 | |
| Na2O | 0.30% | 0.02 | |
| TiO2 | 0.60% | 0.04 | |
| Al2O3 | 21.10% | 1.00 | |
| SiO2 | 67.50% | 5.43 | |
| Fe2O3 | 1.40% | 0.04 | |
| LOI | 6.30% | n/a | |
| C | 0.30% | n/a | |
| Oxide Weight | 452.96 | ||
| Formula Weight | 484.97 | ||
Particle Size (e.s.d.)
125 microns - 5.0
20 microns - 91
2 microns - 59
.5 microns - 30
Modulus of Rupture at 110C
Mn/M2 - 2.6
lbf/in2 - 370
Water Absorption
1120C - 3.0
1220C - 0.0
Shrinkage Dry to Fired
1120C - 11.0
1220C - 14.0
Reflectance 464nm
1120C - 45
1220C - 30
Refractoriness
Cone - 29, 1650C
| 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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