Silica fire bricks are made of tridymite, christobalite and a small amount residual quartz and glass phase. Its silica dioxide content is more than 94%, having the characteristics of resistance to acid slag erosion, high temperature, high refractoriness under load, non-deformation under the high temperature for long time, but the heat stability low.
Silica Fire Brick Properties
Resistance to acid slag erision
High temperature
High refractoriness under load
Non-deformation under the high temperature for long time
Good integrity with furnace lining
Silica Fire Brick Physical and Chemical Index
Silica Refractory Brick
Item/Index
QG-0.8
QG-1.0
QG-1.1
QG-1.15
QG-1.2
SiO2 %
≥88
≥91
≥91
≥91
≥91
Bulk Density g/cm3
≤0.85
≤1.00
≤1.10
≤1.15
≤1.20
Cold Crushing Strength Mpa
≥1.0
≥2.0
≥3.0
≥5.0
≥5.0
0.2Mpa Refractoriness Under Load T0.6℃
≥1400
≥1420
≥1460
≥1500
≥1520
Permanent Linear Change On Reheating % 1450℃*2h
0~+0.5
0~+0.5
0~+0.5
0~+0.5
0~+0.5
20~1000℃ Thermal Expansion 10~6/℃
1.3
1.3
1.3
1.3
1.3
Thermal Conductivity (w/m*k) 350℃
0.55
0.55
0.6
0.65
0.7
Silica Fire Brick Application
Metallurgy industry furnace
Heat treatment furnace.
Chemical industry and construction industry furnace
Furnace of incineration of garbage, recirculating fluidized bed furnace.
Silica Fire Brick Manufacturer
RS refractory manufacturer is specialized in producing various refractory materials, such as silica bricks, high alumina bricks, mullite bricks. We have got good reputation worldwide. Our refractory products are mainly covers metallurgy, steel, chemical industry, building materials, thermal power and other industrial fields. If you have purchase plan for refractory bricks, contact with us!
Silica Fire Brick Properties
Silica Fire Brick Physical and Chemical Index
Silica Fire Brick Application
