Fused Cast Mullite Brick

Dense fused-cast mullite and zirconia-mullite bricks with high refractoriness under load, high hot strength, wear and corrosion resistance and better thermal shock resistance than other fused-cast bricks.

Grades / types: Fused Cast Mullite Brick-FM, Fused Cast Zirconia Mullite Brick-ZM

Product overview

Fused cast mullite brick is dense, with a high refractoriness under load, high strength at high temperature and good wear resistance. It has strong corrosion resistance, a low thermal expansion coefficient and high thermal conductivity, and its thermal shock resistance is better than that of other fused-cast bricks.

Typical values are given for fused cast mullite brick (FM) and fused cast zirconia mullite brick (ZM).

Key characteristics

Dense fused-cast structure
High refractoriness under load
High strength at high temperature and good wear resistance
Strong corrosion resistance
Low thermal expansion and high thermal conductivity
Better thermal shock resistance than other fused-cast bricks

Technical data

Typical values
Property	Unit	Fused Cast Mullite Brick-FM	Fused Cast Zirconia Mullite Brick-ZM
SiO₂	%	16	17
Al₂O₃	%	75	77.5
ZrO₂	%	5	2.5
TiO₂+CaO+MgO+Na₂O+K₂O	%	2	3.0(+Fe2O3)
Bulk Density (Dense Part)	g/cm³	3.2	3.2
Cold Modulus of Rupture (CMOR)	MPa	140	140
Cold Crushing Strength (CCS)	MPa	300	300
Thermal Conductivity (1300℃)	W/(m·K)	5.4	4.6
Thermal Expansion Rate (1300℃)	%	0.9	0.8