Light Brick
Introduction:
Insulating firebricks are classified under temperature between 1300ºC and 1700ºC, manufactured from high purity alumina clay by mixing, press-forming, drying, sintering and machining. Bricks contain carefully-graded organic fillers which are burned out during sintering to give a uniform controllable pore structure. This technique makes product feature low thermal conductivity and excellent heat insulation. Insulating firebrick can be used as a hot face lining directly exposed to the heat or as a backup insulation layer in iron and steel mills, non ferrous foundries, petrochemical, ceramic, glass, cement and oil fired electric power generating plants.
Technical Parameters:
Insulating firebricks are classified under temperature between 1300ºC and 1700ºC, manufactured from high purity alumina clay by mixing, press-forming, drying, sintering and machining. Bricks contain carefully-graded organic fillers which are burned out during sintering to give a uniform controllable pore structure. This technique makes product feature low thermal conductivity and excellent heat insulation. Insulating firebrick can be used as a hot face lining directly exposed to the heat or as a backup insulation layer in iron and steel mills, non ferrous foundries, petrochemical, ceramic, glass, cement and oil fired electric power generating plants.
Technical Parameters:
|
Items
|
WT-corundum
|
Chrome-corundum
|
PL-corundum
|
ZR-corundum
|
ZR-mullite
|
YL-corundum
|
|
AL2O3 %
|
90～98
|
45～50
|
85～90
|
45～50
|
|
85～90
|
|
Fe2O3 %
|
0.5
|
0.5
|
0.5～1.0
|
0.5～0.8
|
|
0.5～1.2
|
|
ZrO2 %
|
|
|
|
33～40
|
≥60
|
|
|
AP %
|
19～23
|
19～22
|
17～22
|
18～23
|
≤18
|
18～23
|
|
RUL ℃
|
1500～1700
|
1600～1700
|
1500～1700
|
1600
|
≥1600
|
1550～1650
|
|
CCS MPa
|
80～85
|
80～85
|
60～65
|
70～75
|
≥85
|
60～65
|
|
Refractoriness ℃
|
1790
|
1790
|
1790
|
1790
|
|
1790
|
|
BD g/m3
|
|
|
|
3.0～3.4
|
≥3.4
|
|
|
PLC % ℃×h
|
±3 1600×3
|
±3 1600×3
|
±3 1550×3
|
0.4 1600×3
|
|
±0.3 1550×3
|
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