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Potash Feldspar

The name of “Feldspar” refers to group of Aluminum Silicate of potassium, sodium and calcium. The chief use of Feldspar is in the Ceramic and Glass Industries. Smaller quantities are used in the manufacturing of Tiles, Whiteware, and Sanitaryware. Other uses of Feldspar include Catalysts, Acid resistant and Decorative Stone as a flux or binding agent in certain scanning Soaps and artificial teeth.


  POTASH-01 POTASH-02
Silica SiO2 66% (+/- 1%) 68% (+/- 1%)
Alumina Al2O3 18% (+/- 0.5%) 17% (+/- 0.5%)
Potassium Oxide K2O 12.8% (+/- 1%) 10% (+/- 1%)
Sodium Oxide Na2O 2% (+/- 1%) 3% (+/- 1%)
Titanium Oxide TiO2 Nil Nil
Calcium Oxide CaO Nil Nil
Magnesium Oxide MgO Nil Nil
Ferric Oxide Fe2O3 0.06% (+/- 0.01%) 0.08% (+/- 0.02%)
Loss on Ignition LOI 0.1% 0.2%

* Above are based on our research as well as research of others. However, this document is not contractual and nothing in it constitutes a warranty (expressed or implied) that the goods described are accurate and fit for a particular purpose of the customer. Purchasers are advised to make their own test to determine the suitability.

Potash feldspar is used in various industries.

Silent Features

  • Best for Ceramic & Sanitary Ware Manufacturing - Application in both Glaze (K2O > 11.5%) & Body (K2O >10.5%) – gives White Firing Colour.
  • Glass Grades – better fluxing from K2O > 10% (total alkalies > 13%), Alumina > 17% for strength, Low Iron Fe2O3 at < 0.5%.
  • High Potash K2O >11% for Flux coated Welding Electrodes.

Applications

In the manufacturing of ceramic products, Feldspar is the second most important ingredient after clay. Feldspar does not have a strict melting point, since it melts gradually over a range of temperatures. This greatly facilitates the melting of quartz and clays and, through appropriate mixing, allows modulations of this important step of ceramic making. Feldspars are used as fluxing agents to form a glassy phase at low temperatures and as a source of alkalies and alumina in glazes. They improve the strength, toughness, and durability of the ceramic body, and cement the crystalline phase of other ingredients, softening, melting and wetting other batch constituents.

Feldspar assists the enamel composition, assuring the absence of defects and the neatness of the end product: e.g. enamel frits, ceramic glazes, ceramic tile glazes, sanitary-ware, tableware, electrical porcelain and giftware.

  • Wall & Floor Tiles – glazed Tiles, Vitrified Homogenous Tiles, Fast Firing, Third Firing.
  • Vitreous Porcelain – Tableware & Other Ceramic product.
  • Enameled Ceramics & Potteries.
  • Technical & Advanced Ceramics.
  • Vitrified Pipes & other Products.
  • Frits & Glaze.

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