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Silica Fire Brick KN for coke oven

Silica refractoryr brick for coke oven, Silica brick refractories are acidic, with good acid resistance capacity slag erosion, load softening temperature up to 1640 ~ 1670 ℃, long-term use at high volume relatively stable.
Quantity:
  • Dezhen
  • 690220

Silica brick features:
The brick is shaped by high pressure and sintered at high temperature. with excellent high-temperature physical performance and chemical erosion resistance.

Application: Carbonization chamber is mainly used for coke ovens and combustion chamber walls, open hearth steelmaking regenerator and sediment room, soaking furnace, glass furnace, refractory materials and ceramic silica brick kiln firing kiln vault and other load-bearing parts. Also used in high-temperature load-bearing parts of the stove and acid open-hearth furnace top

The technical specification:


SILICA BRICK KN

Property

Unit

Limit



Weight ≤25kg

Weight >25kg

For each brick tested

Bulk density

Kg/m3

≥1780

≥1760


Apparent porosity

%

≤24.5

≤24.5


Cold crushing strength

Mpa

≥28

≥28

≥20

RUL T0.5

≥1630

≥1630


Creep in compression,1450℃,0.2Mpa,0-25h

%

≤0.35

≤0.35


Residual quartz

%

≤4.0

≤4.0


SiO2

%

≥94.5

≥94.5


Al2O3

%

≤1.5

≤1.5


Fe2O3

%

≤1.0

≤1.0


CaO

%

≤3.0

≤3.0


Na2O+K2O

%

≤0.35

≤0.35


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