K-40 Feldspar
Description: POTASH/SODIUM/CALCIUM FELDSPAR
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 0.17% | 0.02 | |
| K2O | 10.60% | 0.66 | |
| MgO | 0.05% | 0.01 | |
| Na2O | 3.30% | 0.31 | |
| Al2O3 | 17.88% | 1.03 | |
| SiO2 | 67.34% | 6.59 | |
| Fe2O3 | 0.08% | - | |
| LOI | 0.19% | n/a | |
| Oxide Weight | 584.74 | ||
| Formula Weight | 585.86 | ||
Notes
K-40 is used as a source of alumina and potash in specialized glass batch formulations requiring high potassium levels. Carefully beneficiated using the froth floation process, K-40 Feldspar offers low iron and high alkali content per unit of alumina.
Screen Analysis (Cum %):
+30 mesh: 0.1
+40 mesh: 0.22
+200 mesh: 95.9
Bulk Density: 90 lbs/cu ft
Related Information
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Feldspar
The most common source of fluxes for high and medium temperature glazes and bodies. |