Low-iron feldspar lumps and powder for ceramic tiles, porcelain, and glass fluxing.
Feldspar is a vital fluxing agent utilized across the glass and ceramics industries. Golden I Minerals produces exceptionally high-quality Potash and Soda Feldspar, characterized by high alkali content (K2O + Na2O) and strictly controlled iron levels.
Our advanced selective mining and magnetic separation technologies ensure a consistent mineral composition, dramatically improving the melting characteristics and finish quality of our clients' end products.
We supply both major types of industrial feldspar to suit different firing requirements:
| Parameter | Standard Value |
|---|---|
| Total Alkali (K2O + Na2O) | 12 - 15% |
| Silica (SiO2) | 65 - 68% |
| Alumina (Al2O3) | 18 - 20% |
| Iron Oxide (Fe2O3) | < 0.1% |
| Whiteness Index | 80 - 88% |
| Forms Available | Lumps / Granules / Powder |
Feldspar is the second most important ingredient in ceramics after clay. Its applications include:
Manually sorted blocks for clients with dedicated crushing and milling facilities.
Uniformly crushed chips processed through magnetic separators to reduce iron.
Finely ground powder (100-300 mesh) ready for immediate incorporation into ceramic slips.
Strictly sized granular feldspar ensuring smooth melting in glass furnaces.
The fluxing capacity of feldspar relies entirely on its alkali content. At Golden I Minerals, our quality control begins at the quarry face, where we perform continuous drill core testing to map alkali variations before extraction.
Post-extraction, our NABL accredited laboratories monitor K2O, Na2O, and Fe2O3 levels using advanced XRF analyzers. This guarantees a stable, highly effective mineral flux that reduces the energy consumption of our clients' kilns and furnaces.
