Corundum Brick
Product Description:
Corundum brick is manufactured using synthetic fused corundum and sintered corundum and finely grained highly aluminous raw materials with ceramic and chemical bonding.
Feature:
Corundum brick has features like high thermal shock resistance, big bulk density, high strength and abrasion resistance, strong acid and alkali corrosion resistance.
Application:
Corundum brick is widely used in furnace kilns of metallurgy, chemical engineering, electric and glass industry.
Technical Parameters:
Corundum brick is manufactured using synthetic fused corundum and sintered corundum and finely grained highly aluminous raw materials with ceramic and chemical bonding.
Feature:
Corundum brick has features like high thermal shock resistance, big bulk density, high strength and abrasion resistance, strong acid and alkali corrosion resistance.
Application:
Corundum brick is widely used in furnace kilns of metallurgy, chemical engineering, electric and glass industry.
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
|
|
Index Quality
|
Compound Silimanite Brick
|
Corundum-Mullite Brick
|
|
AL2O3%
|
52--75
|
76--95
|
|
AL2O3+SiO2%
|
＞97
|
＞97
|
|
Fe2O3%
|
＜0.8
|
＜0.5
|
|
R2O%
|
＜0.6
|
＜0.5
|
|
Refractoriness℃
|
＞1790
|
＞1810
|
|
Bulk density g/cm3
|
2.4—2.6
|
2.6—3.15
|
|
Apparent porosity %
|
13--22
|
13--22
|
|
C.C.Strength Mpa
|
60--160
|
60--160
|
|
T.S.R(1000℃---WATER)
|
＞20times
|
＞20times
|
|
P.L.C(1400℃*2h)
|
+0.1
|
+0.1
|
|
Usage: The products can be widely used in burner block electrical-heating cover plate forehearth, material-feeder machine drag-tube machine blow-bubble machine, corundum-mullite crown brick etc. of glass industry.
|
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