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Factory supply mullite sand / powder refractory material

Product: Mullite

Color: White/ Blue

Usage: Refractory material

Common Size: 0-1,1-3,3-5,5-8mm 40-70 mesh

Packing: 25/50 kg/ bag

Description

Mullite is a high-quality refractory raw material, and this type of mineral is relatively rare. Mullite is a mineral produced by aluminosilicates at high temperatures. Mullite is formed when aluminosilicates are artificially heated. Natural mullite crystals are slender, needle-like and radially clustered. Mullite is used to produce high-temperature refractories.

Advantages of Mullite

  • High temperature resistance
  • High strength
  • Small thermal conductivity
  • Significant energy saving effect

Application of Mullite

  • Refractory material
  • Ceramic manufacturing
  • Casting etc.

Specification of Mullite

Item/GradeM45M47M60M70
Al2O3 ( %,Min ) 45476070
Fe2O3 ( %,Max ) 1.01.21.351.3
SiO2 ( %, Max ) 52503727
TiO2 ( % ) 0.81.01.80.8
K2O ( % ) 0.08 0.08 0.1 0.1
Na2O ( % ) 0.08 0.08 0.08 0.1
MgO ( % ) 0.1 0.1 0.1 0.1
CaO ( % ) 0.3 0.30.35 0.35
Bulk density ( g/cm3 ) 2.55 2.64 2.78 2.8
Refractoriness deg.C Min 1750 1790 1820 1850
Apparent porosity ( % ) Max 2.0 2.0 2.8 2.8
Mullite ( % ) 55 65 78 78
Water absorption ( % ) Max3.03.03.03.0

 

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