Mullite

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Revision as of 21:37, 2 December 2024 by Admin (talk | contribs) (Created page with "{{Mineral |name=Mullite |freq=common |hardness=6-7 |density=3.11 |chemf=(Al2O3)3(SiO2)2 }} Mullite is the "rock" produced by ceramic work: ==Uses== ===Primary=== * Structural material ===Secondary=== * Filler for ceramics ==Natural occurrence== * Mullite does occur naturally ==Production== ===from kaolinite=== : by firing ==Allotropes== * '''Platelet mullite''' is stable at temperatures below 1300°C. At temperatures above 1400°C it transforms into '''needle mull...")
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Mullite
Frequency common
Hardness 6-7
Density 3.11
Chemical Formula (Al2O3)3(SiO2)2

Mullite is the "rock" produced by ceramic work:

Uses

Primary

  • Structural material

Secondary

  • Filler for ceramics

Natural occurrence

  • Mullite does occur naturally

Production

from kaolinite

by firing

Allotropes

  • Platelet mullite is stable at temperatures below 1300°C. At temperatures above 1400°C it transforms into needle mullite
  • Needle mullite is stable from low temperatures through its melting point of 1840°C

See Also

References

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