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Cast Big Mullite Brick

Cast Big Mullite Brick

  • Apparent Porosity% :≤17
  • Bulk Density g/cm3:≥2.55
  • Cold Crushing Strength Mpa:≥60
  • 0.2Mpa Refractoriness Under Load T0.6 ℃:≥1580
  • Permanent Linear Change On Reheating (%)1500℃X2h:0~+0.4
  • Thermal Shock Resistances 100℃ water cycles:≥18

Feature

Mullite brick IS characterized by good high temperature resistance and good thermal shock resistance, whick comes into being mullite through calcine with clay, high alumina materials and ceramics.
► The main applications are:
Sulfuric cracking furnace
Fibrous glass furnance.
►  Specifications
Low permanent linear change on reheating
Good Thermal Shock Stability
High dense structure
►  Advantages
High quality;
chemical corrosion- resistance

Technical Data

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
Apparent Porosity% ≤17 ≤17 ≤17 ≤18
Bulk Density g/cm3 ≥2.55 ≥2.55 ≥2.55 ≥2.55
Cold Crushing Strength Mpa ≥60 ≥60 ≥80 ≥80
0.2Mpa Refractoriness Under Load T0.6 ℃ ≥1580 ≥1600 ≥1600 ≥1650
Permanent Linear Change On Reheating (%)1500℃X2h 0~+0.4 0~+0.4 0~+0.4 0~+0.4
Thermal Shock Resistances 100℃ water cycles ≥18 ≥18 ≥18 ≥18

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