Mullite fine powder is the use of hard clay mineral resources to advanced processing technology, after high temperature roasting, crushing, screening, Raymond, iron and other processes produced; with high aluminum content, low iron, high hardness, thermal expansion Coefficient is small, high refractoriness, thermal chemical stability and so on.
Mullite fine powder is mainly used for melt casting, gypsum filler V method modeling and vacuum casting molding materials, and large, medium and small cast steel, cast copper, lining refractory materials, but also for the manufacture of water glass, refractory products , Concrete materials, widely used in machinery, aviation, weapons, metallurgy, oil, insulation, sintering, construction and other industries.
Features:
1, the use of high temperature, direct contact with the flame for the use of working lining, to achieve high temperature energy.
2, low thermal conductivity, good insulation properties, special light mullite aggregate ingredients, volume stability, high strength, good structure, airtight. The following are the same as the "
3, the structure of weight to reduce 40 - 60%, to eliminate the top hanging hanging brick broken hidden.
4, can quickly oven, high porosity exhaust smooth, shorten the oven duration, significant economic benefits.
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Chemical contains
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Al2O3
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SiO2
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Fe2O3
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Na2O + K2O
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CaO+MgO
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TiO2
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42-46%
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51-53%
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1.2-1.5%
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≤0.3%
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≤0.6%
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≤0.1%
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Physical Index
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Bulk density
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True proportion
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Water content
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Refractoriness
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Burn down
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Dustiness
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≥2.5g/cm3
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>2.6/cm3
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<0.03%
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>1750℃
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≤0.3-0.4%
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≤0.01-0.03%
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PH
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hardness
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7-9
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>8.0MPa
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