Mullite Refractory Brick

Mullite Refractory Brick

1.High refractoriness,
2.Good thermal shock resistance,
3.Strong acid erosion resistance,
4.High high-temperature strength,
5.Great wear resistance,
6.Low thermal expansion coefficient,
7High thermal conductivity.

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Mullite Refractory Brick Introduction
Mullite Bricks are an excellent quality high alumina refractory product with about 65~75 percent alumina content. Mullite brick is made of mullite as the main raw material and molded through high temperature firing and pressure. Mullite bricks have advantage performance on furnace and kiln application such as high temperature resistance, chemical and mechanical corrosion, good thermal shock resistance and so on.

Application of Mullite Brick

Mullite bricks are mainly used for top of hot blast stove, stack and bottom of blast furnace, regenerative chamber of glass melter, ceramic post sintering kiln, furnace lining for dead angle of petroleum cracking and etc.

Mullite Brick Technical Data

Mullite Bricks
Item MU 60 MU 65 MU 70 MU 75
Chemical Composition
Al2O3 ≥60 ≥65 ≥70 ≥75
SiO2 ≤35 ≤33 ≤26 ≤24
Fe2O3 ≤1.0 ≤1.0 ≤0.6 ≤0.4
Bulk Density g/cm3 ≥2.55 ≥2.55 ≥2.55 ≥2.55
Permanent Linear Change On Reheating (%)   1500℃X2h 0~+0.4 0~+0.4 0~+0.4 0~+0.4
Apparent Porosity   % ≤17 ≤17 ≤17 ≤18
Thermal Conductivity (W/MK) 1000℃ 1.74 1.84 1.95 1.95
Cold Crushing Strength Mpa ≥60 ≥60 ≥80 ≥80
20-1000℃ Thermal Expansich10-6/℃ 0.6 0.6 0.6 0.55
0.2Mpa Refractoriness Under Load T0.6 ℃ ≥1580 ≥1600 ≥1600 ≥1650
Thermal Shock Resistances 100℃ water cycles ≥18 ≥18 ≥18 ≥18


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