Mullite-Zirconia

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
45µ
10µ
2µ

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 g.cm ^-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.

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