Clay Ceram (Unimin, Granville)
A standard material in Glazecalc's library: its oxide analysis, unity contribution and hazards.
What it is
- Kind
- Clays
- Status
- Discontinued
- Formula
- SiO₂ 52.2%, Al₂O₃ 32.6%, Fe₂O₃ 0.6%, TiO₂ 0.9%, MgO 0.3%, K₂O 0.4%, Na₂O 0.2%, LOI 12.1%
- Also called
- Clay Ceram, Clay Ceram BBR, Walker BA213, Granville Ceram
- Made by
- Unimin Australia (now Sibelco Australia), Granville, New South Wales, Australia
- Sold in
- AU
- Similar materials
- China Clay , Hyplas 71 Ball Clay
- Source
- Unimin Australia, Technical Data - Clay Ceram (Granville Ceram 07/09), as posted by Clayworks Australia (archived) (2009-07)
A plastic, white-firing kaolinitic clay with ball-clay working properties, made to replace the older Cresta BB and BB4; it appears in older Australian recipes as 'Clay Ceram'. Walker Ceramics marks it 'no longer available'.
Walker Ceramics already listed it as no longer available in October 2016.
Oxide analysis and unity formula
Glazecalc has the analysis of Clay Ceram (Unimin, Granville) as weight percent of the raw material. The unity contribution is the moles of each oxide in the amount of Clay Ceram (Unimin, Granville) that holds 1.0 mole of flux, which is how Glazecalc adds it into a recipe's unity formula.
| Oxide | Weight % | Unity contribution |
|---|---|---|
| SiO₂ | 52.2 | 58.243 |
| Al₂O₃ | 32.6 | 21.434 |
| Fe₂O₃ | 0.6 | 0.252 |
| TiO₂ | 0.9 | 0.755 |
| MgO | 0.3 | 0.499 |
| K₂O | 0.4 | 0.285 |
| Na₂O | 0.2 | 0.216 |
- Equivalent weight
- 6703.83
- Fired weight
- 5892.67
- Loss on ignition
- 12.1%
The equivalent weight is the grams of Clay Ceram (Unimin, Granville) that hold 1.0 mole of flux. The fired weight is what is left of that after firing.
Hazards and safety
Hazards: Unimin TDS: contains free crystalline silica (quartz). Avoid breathing the dust.
Use it in a recipe
Add Clay Ceram (Unimin, Granville) to a recipe in the Glazecalc calculator to see what it does to a glaze's unity formula.