High quality mullite brick for glass furnace

Mullite bricks are high-alumina refractories with mullite (3Al2O3·2SiO2) as the main crystal phase. Generally, the alumina content is between 70% and 80%. Mullite Refractory bricks have high refractoriness, which can reach above 1790℃. The starting temperature of load softening is 1600～1700℃. It has the good thermal shock resistance with cold crushing strength of 70～260MPa. There are two types of mullite refractories: sintered mullite bricks and fused mullite bricks. If the Al2O3 content in refractory brick is more than 80%, we call it as corundum mullite brick. If there is ZrO2 in the brick, we call it as Zircon Mullite Brick.As a professional mullite bricks manufacturer, we have exported different mullite refractory bricks to more than 30 countries. Please kindly read the following more information and makeInquiry.

Scope of application:

lMullite bricks are widely used in glass furnaces,hot blast stove and etc

Advantage:

lLow thermal expansion rate

lStrong resistance to corrosion by metallurgical slag and various glass liquids

lHigh temperature wear resistance

lHigh temperature thermal stability, anti-corrosion of glass liquid

lLong service lifetime

Technical Data:

Items	Mullitebrick M72	Mullite brick M78	Mullite brick M80
Al2o3 %	≥72	≥78	≥80
Fe2o3 %	≤0.8	≤1.0	≤0.5
Bulk density g/cm3	≥2.55	≥2.65	≥2.9
Apparent porosity %	≤17	≤18	≤19
Cold crushing strength mpa	≥80	≥80	5
Thermal shock resistance	Excellent	Excellent	Very good
Softening under load	---	≤1700	1700
Thermalexpansion %	--

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