KalziumSilikathydratPhasen

Kalziumsilicat, or calcium silicate, is a chemical compound with the formula CaSiO3. In nature it occurs as the mineral wollastonite, a calcium silicate mineral, and it is also produced synthetically for industrial use. Wollastonite forms in metamorphic and igneous rocks and is mined as a source of calcium silicate for various applications.

Calcium silicate is valued for its chemical stability and high-temperature performance. Natural wollastonite and its synthetic forms are used in a range of products, including construction materials and industrial fillers. In construction, calcium silicate boards provide fire resistance, rigidity, and moisture buffering, and they are employed in walls, ceilings, and exterior cladding. In manufacturing, calcium silicate is used as a mineral filler and reinforcing additive in plastics, rubber, paints, and ceramics, where it can improve brightness, dimensional stability, and heat resistance. It also contributes to the performance of certain cement and ceramic systems, depending on processing conditions.

Safety and handling considerations focus on dust management. Processing calcium silicate dust can irritate the eyes, skin, and respiratory tract, so appropriate ventilation, dust control, and personal protective equipment are advised. Environmental care includes minimizing dust release and following standard industrial hygiene practices. Overall, calcium silicate is a versatile material used for insulation, fire protection, and as a functional filler in various composites.