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Sodium Feldspar
Specifications
| Color | Off White |
| Packaging size | 50 Kg |
| State | Lumps |
| Specific Gravity | 2.6 |
| Application | Industrial |
| Whiteness | 40-50% |
In Ceramic bodies, the main vitrifying (fluxing) agent is feldspar.l the majority of white ware bodies contain good proportions of feldspar. It acts as a flux. In the ceramic industry, the flux is defined as that portion of the body which develops glass phase. This is provided mostly by feldspar. The amount of flux in a ceramic body should be only in such a proportion as to develop the desired amount of vitrification. If excess of flux is added, the fired body becomes very glassy and consequently, brittle.
Chemical Properties (% Oxides)
|
Product |
Grade |
SiO2 |
AL2O3 |
K2O |
Na2O |
Fe2O3 |
MGO |
CaO |
TiO2 |
Lol |
Fring result 1175 oC – 1220oC |
Firing appearance |
|
N – 1 |
First |
69% |
18% |
.50% |
10% |
.10% |
.1% |
.05% |
Nil |
0.10% |
Milky white |
White to cream |
|
|
|
(+1%) |
(+1%) |
(+5%) |
(+1%) |
(+.03%) |
(+.1%) |
(+.05%) |
|
|
|
|
|
N – 2 |
Second |
72% |
17% |
2% |
8% |
.15% |
.2% |
.2% |
Nil |
.20% |
Off white |
White to cream |
