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Potassium feldspar is a common type of feldspar mineral, which is a group of rock-forming minerals that make up around 60% of the Earth's crust. It is also known as K-feldspar or orthoclase feldspar.
Potassium feldspar typically has a pink, reddish, or grayish-white color and is characterized by its unique physical and chemical properties, including high hardness, low melting point, and good chemical resistance. It is composed of silica, alumina, and potassium oxide and is commonly found in igneous, metamorphic, and sedimentary rocks.
Potassium feldspar is widely used in various industries, including ceramics, glassmaking, paints and coatings, agriculture, abrasives, and construction, among others, due to its unique physical and chemical properties.
It is an important ingredient in the production of porcelain, fine china, and other ceramics, as well as glass, cement, and concrete. Potassium feldspar is also used as a fertilizer in agriculture and as an abrasive in metalworking, glassmaking, and polishing.
| PHYSICAL CHARACTERISTICS | |
|---|---|
| Hardness | 7 on the Mohs scale |
| Specific Gravity | 2.65 |
| Melting Point | 1713 degrees Celsius |
| Color | Transparent to translucent, can range from clear to various shades of pink, purple, yellow, and brown |
| Shape | Angular to rounded |
| CHEMICAL ANALYSIS OF THE RAW MATERIAL SiO₂ 60.00% | |
|---|---|
| Chemical Formula | High content of SiO₂ 99.8% and above |
| Solubility | Insoluble in water and most acids, except hydrofluoric acid |
| Piezoelectric Properties | Can generate an electric charge when subjected to pressure or mechanical stress |
Improves melt fluidity, hardness, and chemical resistance as a network modifier in float and container glass.
Acts as a flux in body and glaze. Enhances vitrification, lowers firing temperature, and increases whiteness.
Adds strength and glaze brilliance. Yields dense, chip-resistant bodies.
Used as an extender and filler. Improves rheology and opacity, reduces gloss where required.
Works as a functional filler. Enhances UV stability, strength, and thermal resistance.
Acts as a bond matrix. Ensures consistent Mohs hardness and cutting performance.
Used as a slag former. Improves slag removal and surface finish in welding.
Functions as a reinforcing mineral filler. Increases tensile strength and heat resistance.
The following are key properties of the Potassium Feldspar that we supply:
EarthCore Minerals offers Potassium Feldspar that supports performance and quality across a variety of ceramic and glass manufacturing sectors, including:
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