Πυρίμαχο τούβλο Mullite

Mainly used in hot blast furnace tops, blast furnace shafts and bottoms, glass melting furnace regenerators, ceramic sintering kilns, dead-end furnace linings in petroleum cracking systems, etc.

  • Al2O3% (≥): 62-70
  • Fe2O3)/%(≤): 1.5-1.8
  • Refractoriness Under Load (℃)(≥): 1760-1780
  • Cold Crushing Strength (MPa)(≥): 25
  • Standard Size: 230*114*65mm
  • Certification: ISO9001/ISO14001/ISO45001/ISO50001
  • Sample: testing of sample is available

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Description of Mullite Refractory Brick

The main component of mullite brick is mullite, which is formed by the reaction of aluminum (Al2O3) and silicon dioxide (SiO2) at high temperatures. Mullite is a high-quality refractory material, which is very rare. Mullite is a mineral formed by the crystallization of aluminosilicate at high temperatures. It has high crystallinity, excellent heat insulation effect, low heat conduction activity, and remarkable energy-saving effect. Mullite bricks are divided into sintered mullite bricks and cast mullite bricks.

Mullite Refractory Brick Technical Data Sheet

Item/Grade JM-70 JM-62
ω (Al2O3)/% μ0 70.0 62.0
3.0
ω (Fe2O3)/% μ0 1.8 1.5
0.2
Refractoriness/℃ μ0 1780 1760
10
Apparent Porosity/% μ0 28 26
2
Cold Crushing Strength/MPa μ0 25
7
Permanent Linear Change (1500℃*2h)/% Xmin~Xmax -0.1~+0.4

Advantages of Mullite Refractory Brick

High Refractoriness High Thermal Conductivity Good Creep Resistance Strong Ability to Resist Acid and Alkali Slag

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