All technical data presented represent typical results, unless stated otherwise as min/max values.
No guarantee is made that material will meet exactly the values shown.


Fused Zirconia Mullite


A co-fusion product of high purity alumina and zircon. Exhibits excellent abrasion and corrosion resistant properties in both steel and glass environments.

Produced from high-temperature electrofusion of Bayer process calcined alumina with low impurity zircon sand.

Major phases identified by X-ray diffraction as Mullite and dendrites of Zirconia with traces of glass. Massive crystals of Mullite are interwoven with pure Zirconia improving the corrosion resistance while retaining the high-temperature strength and creep resistance of Mullite.

Principal properties are:

  • high thermal shock resistance
  • low thermal expansion
  • low glass content
  • high resistance to corrosive elements
  • low wettability by glass

Standard sizes are:
5 - 3 mm
3 - 1.5 mm
1.5 - 0.7 mm
- 0.7 mm
- 0.15 mm
- 0.08 mm


Chemical Analysis

Oxide %
SiO2 16.0
TiO2 0.06
Al2O3 47.5
Fe2O3 0.06
CaO + MgO 0.08
Na2O + K2O 0.12
ZrO2 + HfO3 36.0

Free metallic iron levels are below the 0.02%
(lower for many size distributions)

Physical properties

Bulk density 3.65 -3
Apparent porosity 1.8%
Thermal expansion (reversible) 0.45%
Refractoriness 1,750°C

Packaging options
25 kg nett paper sacks wrapped on a wooden pallet of 1200 kgs.
1000 - 1,500 kgs nett big-bags wrapped on a wooden pallet.

Application: Specialty materials
Product type: Consumables, Chemicals
Production scale: Commercial, Lab, Pilot
Search tags: Refractory, Raw material

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