Potash feldspar
Product details
Potash Feldspar, also known as K-Feldspar or potassium feldspar, is a common mineral in the Earth's crust and a vital component in the manufacturing of ceramics. It is typically composed of potassium alumino-silicate and is known for its high melting point, making it an essential material in ceramic and glass production. Potash Feldspar is valued for its properties such as excellent fluxing characteristics, helping to lower the melting temperatures of mixtures, and enhancing the strength, durability, and translucency of ceramic products.
Applications
Ceramics: Potash feldspar is extensively used in the production of porcelain, earthenware, and stoneware. Its primary role is to act as a flux, which lowers the melting temperature of the mixture, improving the formation of glassy phase and enhancing the strength and durability of the ceramic products.
Glass: It is a significant ingredient in glass manufacturing, helping to improve the hardness, durability, and resistance to corrosion of the glass products.
Enamel and Glazes: Potash feldspar is used in the production of enamels and glazes, providing the necessary fluxing action and contributing to the aesthetic qualities of the final product.
Abrasives: Used in abrasive products due to its hardness and durability.
Filler: Used as a filler in paints, plastics, and rubber to improve product properties.
Technical Details
Property | Details |
---|---|
Chemical Formula | KAlSi3O8 |
Appearance | White or light-colored, often pink, flesh-colored, or gray |
Melting Point | 1150-1250°C |
Mohs Hardness | 6-6.5 |
Specific Gravity | 2.56-2.59 |
Refractive Index | 1.518-1.526 |
Application | Ceramics, glassmaking, enamel, and glazes |
Function in Ceramics | Acts as a flux to reduce melting temperatures, improves strength and durability, enhances transparency and gloss |
Fluxing Range | 900-1100°C |
Particle Size | Typically available in powdered form with various mesh sizes |
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