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Nepheline

Nepheline products are high alkali ceramic fluxes, produced from nepheline syenite; a naturally occurring, silica deficient, sodium – potassium alumina silicate. Nepheline products are processed and sized with rigid adherence to ISO 9001 quality procedures which ensure consistency, lower iron oxides and uniform particle distributions. Because of its extremely low melting point and high alumina content, Sibelco nepheline syenite is used as a flux in ceramics, to lower melting temperatures in glass, and as a functional filler in coatings and polymers.

Our nepheline syenite products are characterised by:
- High purity
- Low melting point
- High alumina content
- Free of crystalline silica
- High brightness
- Relatively low refractive index
- High inertness
- Easy wetting
- Transparency for UV-radiation

For additional technical details, please see TDS and SDS files.