Refractories, fibers, aluminosilicate

Base Information

• Chemical Name: Refractories, fibers, aluminosilicate
• CAS No.: 142844-00-6
• Molecular Formula: Al6O13Si2
• Molecular Weight: 426.052428
• Hs Code.: 6806 10 00
• Mol file: 142844-00-6.mol

Synonyms:Refractories, fibers, aluminosilicate;ALUMINOSILICATE (VITREOUS)

Chemical Property of Refractories, fibers, aluminosilicate

Chemical Property:

• Melting Point: >1650°C
• Density: 2.6-2.7 g/cm3
• Storage Temp.: Store at +5°C to +30°C.

Purity/Quality:

99.9% ^*data from raw suppliers

Aluminium oxide fibers for gooch crucibles ^*data from reagent suppliers

Safty Information:

• Pictogram(s): T
• Hazard Codes: T
• Statements: 49
• Safety Statements: 53-45

MSDS Files:

Total 1 MSDS from other Authors

Useful:

• Description: Aluminosilicate fibers (commonly called refractory ceramic fibers (RCFs) in the United States) are amorphous fibers belonging to a class of materials termed synthetic vitreous fibers (SVFs), also termed man-made mineral fibers or manmade vitreous fibers. This class of materials also includes glass wool, rock (stone) wool, slag wool, mineral wool, and specialpurpose glass fibers. Fibers can be classified in various ways, such as natural versus synthetic, organic versus inorganic, and crystalline versus amorphous. Several fiber taxonomies have been proposed.Aluminosilicate wools (ASWs) were first invented in the early 1940s and commercialized in the 1950s in the United States and somewhat later in other countries. Substantial energy price increases beginning in the 1970s increased the economic benefits of energy conservation and the market for these fibers.ASWs are SVFs produced by melting (at ～1925°C) alumina, silica, and other inorganic oxides, and then blowing or spinning these melts into fibers. These fibers can also be produced by melting blends of calcined kaolin, alumina, and silica. The bulk fibers produced by this process can be used directly for some applications, but are more commonly converted into other physical forms, including blanket, modules (folded blanket capable of being installed rapidly in industrial furnaces), paper, felt, board, vacuum formed parts, textiles, and putties or pastes. Conversion to various physical forms takes place at locations where aluminosilicate fibers are produced, facilities operated by converters (producers of intermediate goods) or end users. Primary manufacturing facilities for aluminosilicate fibers are located in North and South America, Europe, and Asia. Conversion facilities and end users are distributed throughout the industrialized world.
• Uses: ASWs have several desirable properties for use as hightemperature insulating materials, including low thermal conductivity, low heat storage (low volumetric heat capacity), thermal shock resistance, lightweight, good corrosion resistance, and ease of installation. Depending upon the fiber composition, the maximum end-use temperature for ASWs can be as high as 1430°C (2600°F). Because of this capability, these fibers are also included in the class of high-temperature insulating wools (HTIWs). Benefits of the use of ASW insulation include reduced energy costs and reduced greenhouse gas emissions. The energy savings can be substantial when compared to conventional high-temperature insulation such as insulating firebrick. Applications and markets for ASWs are principally industrial and vary by product form and country including furnace linings and components in the cement, ceramic, chemical, fertilizer, forging, foundry, glass, heat treating, nonferrous metals, petrochemical, power generation (cogeneration), and steel industries. ASWs are used for passive fire protection applications where thin, lightweight materials are needed to prevent flame penetration. ASWs are also used to a minor degree in emission control applications such as heat shield insulation, catalytic converter support mat, and filtration media for air bag inflators. Though sometimes referred to in the literature as a substitute for asbestos, aluminosilicate fibers are not typically used in asbestos applications. Aluminosilicate fibers are priced substantially higher than various types of asbestos and have maximum end-use temperatures substantially greater than those for asbestos (which vary depending upon the product but are typically°850°C).