Silica brick

Product group
Refractory Bricks & Raw Materials
Origin
China

Zhengzhou Huachen Refractory Co., Ltd.

China
Zhengzhou Huachen Refractory Co., Ltd.

Supplier info

Business type
Manufacturer
Year established
2003
Location
China
Exports to
Worldwide

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
Name Item Silica brick for coke oven G-D Silica brick for hot blast stoves RG-94 Silica brick for glass furnace BG-95 GZ-95 GZ-94 GZ-93
Chemical Competent % SiO 2 ≥93 ≥94 ≥95 ≥95 ≥94 ≥93
Chemical Competent % Al 2 O 3 ≤1.5 ≤1.0 ≤1.0
Chemical Competent % Fe 2 O 3 ≤1.5 ≤1.5 ≤1.0
Chemical Competent % CaO ≤3 ≤2.5
True density , g/cm 3 ≤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 ≥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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