Fused Mullite

Fused mullite is a high-purity refractory material made by melting high-purity quartz sand and industrial alumina in an electric arc furnace at a certain ratio and then cooling it.

 

Fused mullite has the characteristics of well-developed needle-shaped crystals, high flexural strength, uniform expansion, good thermal shock stability, high load softening point, low high-temperature creep, high hardness, and good chemical corrosion resistance. RongSheng’s fused mullite can be customized according to customer requirements.

Application of Fused Mullite:
Fused Mullite is widely used in manufacturing many refractory products,like the low creep-rupture bricks for the hot-air stove,melting-iron groove or torpedo car,high-temperature industrial kiln,glass melting furnace,as well as in producing high-temperature saggers or shed planks,etc.

Technique Data of Fused Mullite:

Item	Unit	Data
AL₂O₃	%	72-77
SiO₂	%	23-29
Fe₂O₃	%	≤0.10
R₂O	%	≤0.50
RO	%	≤0.30
Mullite Phase Content	%	≥95
Glass Phase Content	%	≤5
True Density	g/cm³	≥3.2
Refractoriness	℃	≥1840
Grain Size	mm	0-1,1-3,3-5
Powder Size	mesh	-200,-325