Sanitaryware / Vitreous China / Nepheline Syenite

Nepheline Syenite

Product Benefits

Nepheline syenite is part of a group of minerals which flux ceramic bodies. Because of its high levels of sodium and potassium oxides, and low levels of silica, less nepheline syenite is needed in the ceramic recipe. More silica needs to be added which will be a local material.

The main properties given to vitreous china body:

  • Lowers the firing temperature
  • Forms a vitreous mass with free silica
  • Increases cast rate.

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Technical Details

Nepheline Syenite Country of Origin Chemical Analysis % Particle Size %<
Products SiO2 AI2O3 Na2O K2O CaO MgO TiO2 Fe2O3 10µm 2µm
Spectrum N-45 NO 55.4 24.6 8.1 8.8 1.1 <0.1 0.07 0.1 38
Spectrum N-75 NO 55.4 24.6 8.1 8.8 1.1 <0.1 0.07 0.1 28.2
Spectrum N-500 NO 53.2 24.4 8.2 8.8 1.4 <0.1 0.1 0.1
Spectrum A200-A400 CA 60.2 23.60 10.40 4.85 0.39 0.02 0.08

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