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corundum blocks

corundum blocks

  • Apparent Prosity : ≤17 (%)
  • Bulk Density : ≥3.15 g/cm3
  • Cold Crushing Strength : ≥100 Mpa
  • Refractoriness : ≥1900 ℃
  • 0.2Mpa Refractoriness Under Load T0.6 ℃: ≥1700
Feature:
Main mineral component of corundum brick is corundum phase, it has excellent physical property in high temperature, resistance to chemical corrosion. It is widely used in lining of ovens of petrochemical industry; bottom of steel rolling mill and in the second-stage converters of the 300000t ammonia synthesis furnaces, steel notch. 
 
Application:

Fused corundum blocks is mainly used in key parts of the industrial furnace that require high abrasion and temperature resistance, such as gliding rail bricks in steel pusher metallurgical furnaces, the tapping platform (tapping spout) style walking beam furnaces, and also as the interior for destructors.
Technical Data:
Item Behaviors
  TY-G93 TY-G98
Chemical Composition % Al2O3 ≥93 ≥98.5
  SiO2 ≤5.0 ≤0.2
  Fe2O3 ≤0.1 ≤0.1
  CaO ≤1.2 ≤1.2
  Na2O - -
  ZrO2 - -
  Cr2O3 - -
Apparent Prosity (%) ≤17 ≤17
Bulk Density g/cm3 ≥3.15 ≥3.2
Cold Crushing Strength Mpa ≥100 100
Modulus of Rupture at High 
Temperature 1250℃ Mpa
≥9.5 ≥9.5
Refractoriness ℃ ≥1900 ≥1850
0.2Mpa Refractoriness Under Load T0.6 ℃ ≥1700 ≥1680
Reheat liner change 1600℃×3h % ≤±0.2 ≤±0.2
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