calciumsilicaat

Calciumsilicaat is a term used for calcium silicate compounds, including the mineral wollastonite (CaSiO3). Wollastonite is a white to gray mineral that forms in metamorphic environments such as contact metamorphic rocks and skarns. It is mined as an industrial mineral and processed into powders and crystals for use as a filler, extender, and whitening agent in a range of products.

In industrial contexts, calcium silicate materials also refer to cementitious binders based on calcium silicate hydrates formed from lime or calcium oxide and silica. These binders are used to manufacture calcium silicate boards, which provide fire resistance and thermal insulation, and to produce various insulation products for pipes, ducts, andBuilding envelopes.

Key properties of calcium silicate materials include good whiteness and brightness, chemical inertness, and high-temperature stability. Wollastonite additives can improve mechanical properties and dimensional stability in plastics, paints, rubber, and ceramics. Calcium silicate boards are valued for their fire resistance, low thermal conductivity, and moisture resistance, making them common in construction and renovations.

Applications span several sectors. Wollastonite is used as a filler and whitening agent in paints, coatings, plastics, and ceramics, and as a functional additive to improve workability and strength. Calcium silicate boards and insulation products are used in walls, ceilings, and piping systems for fireproofing and energy efficiency. In cement and glass production, calcium silicate components contribute to the setting behavior and durability of materials.

Safety considerations include the risk of inhalable dust causing respiratory irritation; protective measures should be used when handling powders. Some older wollastonite deposits carried asbestos-related concerns, though modern products are manufactured to mitigate such risks.