Feldspar the most essential ceramic material. It is the universal flux used in all types of ceramics bodies.
None of the mineral in the Feldspar group is found pure. Potash Feldspar (K2O-Al2O3-6SiO2) always contains some albite (Soda Feldspar- Na2OAl2O3-6SiO2).
Sodium feldspar:Feldspar the most essential ceramic material. It is the universal flux used in all types of ceramic bodies.
None of the mineral in the Feldspar Group is found pure. Soda Feldspars always contain some Anorthite (Limespar-CaO-Al2O3-2SiO2) Most commercial feldspars also contain iron oxide (0.04-0.15%) and traces of Magnesia.
| K2O | 10-12% |
| Na2O | 2-2.5% |
| SiO2 | 68% |
| Al2O3 | 17% |
| Fe2O3 | 00.08% |
| CaO | Negligible |
| TiO2 | Nil |
| Mesh | 200,250,300 BSS |