Silica brick
Silica brick belong to acid refractory material, has good resistance to the ability of acid slag erosion, refractoriness under load is as high as 1640 ~ 1670 ℃, volume is stable at high temperatures and long time using. It’s mainly used for coke oven of coking chamber and combustion chamber partition, steel-making furnace regenerator and sediment chamber, soaking furnace, glass furnace refractory and ceramic firing kiln vault and other bearing parts. Also used in high temperature bearing parts of the hot blast stove and acid open hearth furnace roof.
|
Name
Item
|
Silica brick
for
coke oven
G-D
|
Silica brick
for
hot blast stoves
RG-94
|
Silica brick
for
glass furnace
BG-95
|
Normal Silica brick
|
|
GZ-95
|
GZ-94
|
GZ-93
|
|
Chemical
Competent
%
|
SiO2
|
≥93
|
≥94
|
≥95
|
≥95
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≥94
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≥93
|
|
Al2O3
|
≤1.5
|
≤1.0
|
≤1.0
|
|
|
|
|
Fe2O3
|
≤1.5
|
≤1.5
|
≤1.0
|
|
|
|
|
CaO
|
≤3
|
|
≤2.5
|
|
|
|
|
True density，g/cm3
|
≤2.34
|
≤2.34
|
≤2.34
|
≤2.37
|
≤2.38
|
≤2.40
|
|
Apparent porosity, %
|
≤22
|
≤22
|
≤22
|
≤22
|
≤23
|
≤25
|
|
Cold crushing strength, Mpa
|
≥35
|
≥35
|
≥35
|
≥30
|
≥25
|
≥20
|
|
Refractoriness ℃
|
≥1690
|
≥1710
|
≥1710
|
≥1710
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≥1710
|
≥1690
|
|
Initial soften point under
load（℃）2MPa×0.6%
|
1650
|
≥1650
|
1650
|
≥1650
|
≥1640
|
≥1620
|
|
Creep rate（%）
2MPa·1550℃×2h
|
|
≤1
|
|
|
|
|
|
Permanent linear change on reheating，%
1450℃×2h
|
|
+0.2
|
|
|
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HUACHEN
Tel:0086-371-86503968
Fax:0086-371-69399809
Mobile:0086-18939512185
Email:hc01@hcrefractory.com
Skype:dannylsf01
Address:1899th, Zhongzhou Road, Guancheng district, Zhengzhou,Henan ,China
Detailed introduction
