Mullite Brick

  • Mullite Brick

Product Description And Parameters

Main Composition:Al2O3

Application:Hot blast stove, arc furnace, cement kiln, etc

Main Raw Material:Mullite

Standard Size:230*114*65 mm

Refractoriness: ≥1790℃

Standard:ISO 9001 & 14001

Mullite brick refers to a high alumina refractory material with mullite as the main crystal phase. Generally, the alumina content is between 65% and 75%.Mullite bricks have high refractoriness, which can reach above 1790℃. Mullite bricks are pided into sintered mullite bricks and fused mullite bricks.

Features
1.Long Service Life.
2.Low Linear Expansion Change.
3.Good Erosion and Corrosion Resistance.
4.High Compressive Strength.
5.Good Thermal Shock Resistance.

Application
Mullite bricks are mainly used for hot blast stove top, blast furnace body and bottom, regenerator of glass melting furnace, ceramic sintering kiln, lining of petroleum system, etc.

Item

CF1550

CF1600

CF1650

Al2O3(%)

≥60

≥65

≥70

Fe2O3(%)

≤1.5

≤1.2

≤0.8

TiO2(%) ≤0.6 ≤0.5

Bulk Density(g/cm3)

≥2.5

≥2.6

≥2.65

Apparent Porosity(%) ≤19 ≤19 ≤19

0.2MPa Refractoriness Under Load(℃)

≥1500

≥1550

≥1600

Cold Crushing Strength(MPa) ≥60 ≥70 ≥75
Thermal Shock Resistance (900℃, water cooling)(Cycles) ≥25 ≥30 ≥35
Thermal Expansion Rate (20~1000℃)(%) ≤0.8 ≤0.7 ≤0.7

Permanent Linear Change (1500℃×3h)(%)

±0.5

±0.5

±0.3

Creep Rate Testing Temperature 1350℃ 1400℃ 1450℃
0~50 hrs ≤0.6
20~50 hrs ≤0.2

Remark

Thestandardsforhighestservice temperatureareoxidizingatmosphere and intermittentfurnace.

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