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Feldspar is the name given to a group of minerals characterized by the presence of alumina and silicon dioxide in their chemical composition. This group includes aluminum silicates with soda, potassium, or calcium. It is one of the most abundant mineral groups on Earth.
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They constitute a vital part of numerous volcanic rocks, which form the basis of the Earth's solid crust. Due to their abundance, feldspars are used in classifying volcanic rocks.
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Feldspars are also found in many types of sedimentary and metamorphic rocks, and they are one of the most important components of the Earth's crust mineral composition. In addition to being used as a raw material in glass and ceramic industries, feldspar is also used as fillers and extenders in applications such as paints, plastics, and rubber due to its chemical resistance and hardness.
Uses of Feldspar
Feldspar is a vital raw material in glass production, serving as a low-melting material to lower the melting point of silica, which forms the primary glass. This allows for lower temperatures in the glass manufacturing process, resulting in energy savings and cost reduction. It also enhances the strength and durability of the glass.
In the ceramic industry, feldspar is considered a fundamental component. It acts as a low-melting agent, reducing the tendency of the ceramic body to transform into glass, thereby lowering energy costs. Additionally, feldspar provides the glassy phase necessary for the mechanical strength and cohesion of the final ceramic products.
Feldspar is used as a filler and extender in the paint and plastic industries. Feldspar adds durability, UV stability, and alkali resistance to paint, enhancing its performance. In plastics, feldspar provides improved hardness, dimensional stability, and resistance to wear.
Fine feldspar particles are used as a gentle abrasive in household cleaners and polishes. Feldspar can clean various surfaces gently without leaving scratches, making it suitable for delicate materials and objects.