Sodium feldspar is a mineral used as a flux in the formulation of ceramic glazes and clays. This mineral is especially valuable because of its high sodium content, which helps lower the melting point of ceramic mixtures, allowing them to vitrify at lower temperatures. It also plays a role in the thermal resistance of the pieces, as it helps to reduce thermal expansion and improve dimensional stability during firing.
One of the most appreciated characteristics of sodium feldspar is its ability to contribute to the formation of a smooth, shiny and high quality surface in glazes.
Its use is especially prevalent in mass production ceramics, where energy efficiency and consistency in glaze quality are priorities. In these industrial applications, sodium feldspar helps ensure a more economical and controlled manufacturing process, making it possible to produce large volumes of ceramics without compromising the quality or durability of the pieces.
Interesting Fact
Due to its low melting point, sodium feldspar is used not only in ceramics, but also in the manufacture of glass and frits. This mineral helps lower the melting point of glass, allowing it to be produced at lower temperatures, which reduces energy consumption in glass production.
Helpful Tip
Use sodium feldspar in your glazes if you want to reduce the firing temperature without sacrificing the quality of the glaze. Be sure to adjust the proportions of the other ingredients to prevent the glaze from becoming too fluid or cracking during firing.
