Performance and application

Name

corundum brick with high purity and high density

90^# corundum brick

Yellow corundum brick

zircon corundum brick

zircon corundum brick

AZS-20

AZS-30

Al₂O₃ %

≥98.5

≥90

≥85

≥45

≥50

≥85-90

SiO₂ %

≤0.3

Cr₂O₃5-10

Fe₂O₃ %

≤0.15

≤1.0

≤1.2

≤0.8

≤0.5

ZrO₂ %

≥20

≥30-33

≥3

Apparent porosity rate%

≤18

≤18

≤20

≤18

≤16

≤18

Bulk density g/cm³

≥3.20

≥3.10

≥2.95

≥2.90

≥3.3

≥3.20

Pressure resistance Intensity at Normal temperature Mpa

≥70

≥70

≥70

≥50

≥60

≥80

Refractoriness under load °C

≥1700

≥1650

≥1600

≥1520

≥1650

≥1680

Thermal shock stability (water-cooling)frequency/850°C

≥6

Coefficient of thermal expansion ×10^-6/°C

≤8.0(800°C)

Fire resistance °C

≥1850

≥1790

≥1790

≥1825

Max application temperature °C

1800

1650

1600

1500

1600

1650

Application

Used for gasification furnace, gas-making furnace and black carbon reaction furnace of petrochemical industry, and it also can be used for inner liner of other ultra-high temperature kilns.

Used for glass melting pool, regenerator and ceramics clinker kiln, etc.

Used for the inner liner of light industry furnace, black carbon reaction furnace and other high-temperature kilns.