Fused Zirconia Mullite ZrO2 35-39%

Fused Zirconia Mullite
Fused mullite-zirconia
FZM

Short Description

FZM is manufactured from fusing high quality Bayer process alumina and zircon sand in electric arc furnace, During melting, the zircon and alumina react to yield a mixture of mullite and zirconia.

It is composed of large needle-like mullite crystals containing co-precipitated monoclinic ZrO2.

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Chemical composition

Items			Unit	Index	Typical
Chemical composition		Al2O3	%	41.00-46.00	44.68
		ZrO2	%	35.00-39.00	36.31
		SiO2	%	16.50-20.00	17.13
		Fe2O3	%	0.20max	0.09
Bulk density			g/cm3	3.6min	3.64
Apparent porosity			%	3.00max
Phase	3Al2O3.2SiO2		%	50-55
	Indined ZrSiO4		%	30-33
	Corundum		%	5.00max
	Glass		%	5.00max

Applications

It is used in specialty product applications where a high resistance to environmental corrosion and a low coefficient of thermal expansion are desirable properties.

Applications include ceramic pressure casting tubes and refractory shapes requiring resistance to molten slag and molten glass.

Zir-mull bricks and bricks used in the Glass Industry as well as an additive in Continuous casting refractories.