Anglo Pacific Minerals Nepheline Syenite - Ceramic Grade AP Cer

• Nepheline Syenite is a naturally occurring, silica-free, anhydrous sodium-potassium alumina silicate, that delivers improved product performance and is accordant with modern environmental and industrial hygiene standards.
• Nepheline syenites a composed of three primary minerals: the albite form (sodium) of feldspar, the microcline form (potassium) of feld,spar and nepheline (feldspathoid).
• The existence of nepheline and the absence of crystalline silica is what sets this uniquely occurring rock apart from feldspar fillers, which contain just albite and microcline.
• Like feldspar, it provides alkalis that act as a flux in the manufacture of glass and ceramics. In glass production, alumina acts as a matrix of stabilizer, enhancing the workability of molten glass, and increasing the resistance for scratching, breaking and chemical protection.

In ceramic application, nepheline syenite primarily serves as an excellent fluxing agent and has the following functions:

• Significantly lowers the melting point, and speeds up the firing process
• Increases body vitrification over a wide range of firing temperature
• Improves absorption and moisture expansion improves mechanical strength
• Increases thermal expansion and reduces variations of thermal expansion during production

Ceramics