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.

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Brand:
Dezhen
Code:
690220

Product Description

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 T_0.5	℃	≥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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