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Refractory bricks in a torpedo car used for hauling molten iron. In materials science, a refractory (or refractory material) is a material that is resistant to decomposition by heat or chemical attack and that retains its strength and rigidity at high temperatures. [1]
Aluminium silicate is a type of fibrous material made of aluminium oxide and silicon dioxide, (such materials are also called aluminosilicate fibres). These are glassy solid solutions rather than chemical compounds. The compositions are often described in terms of % weight of alumina, Al 2 O 3 and silica, SiO 2. Temperature resistance increases ...
Aluminosilicate refers to materials containing anionic Si-O-Al linkages. Commonly, the associate cations are sodium (Na +), potassium (K +) and protons (H +). Such materials occur as minerals, coal combustion products [1] and as synthetic materials, often in the form of zeolites. Both synthetic and natural aluminosilicates are of technical ...
Alumino silicate wool, also known as refractory ceramic fiber (RCF), consists of amorphous fibers produced by melting a combination of aluminum oxide (Al 2 O 3) and silicon dioxide (SiO 2), usually in a weight ratio 50:50 (see also VDI 3469 Parts 1 and 5, [7] as well as TRGS 521). Products made of alumino silicate wool are generally used at ...
Materials: common refractory materials used to create the investments are: silica, zircon, various aluminium silicates, and alumina. Silica is usually used in the fused silica form, but sometimes quartz is used because it is less expensive.
Kyanite is an aluminum silicate mineral, with the chemical formula Al 2 SiO 5. ... Mullitized kyanite is used to manufacture refractory materials. [19]
Mullite or porcelainite [6] is a rare silicate mineral formed during contact metamorphism of clay minerals. It can form two stoichiometric forms: 3Al 2 O 3 2SiO 2 or 2Al 2 O 3 SiO 2. Unusually, mullite has no charge-balancing cations present. As a result, there are three different aluminium sites: two distorted tetrahedral and one octahedral.
Bauxite forms by the weathering of aluminum-rich and silica-poor rocks in hot, humid, climates, at places with good drainage. Under the proper conditions, weathering disintegrates the aluminium silicate minerals, and dissolves and removes the silica, creating bauxite. The mined US bauxite deposits have all been in the southeastern United States.