High Performance Al2O3 –Cr2O3 Castable High Performance Al2O3 –Cr2O3 Castables

Brand

LGY-1

LGY-2

LGY-3

LGY -4

LGY -5

BPC-1

Chem. comp/ %

Al₂O₃ ≥

87

91

89

86

87

90

CaO ≤

2.5

2.5

2.5

2.5

2.5

1.5

Cr₂O₃ ≥

10

5

3

5

3

3

B. D g/cm³

110℃×16h ≥

3.00

3.00

3.00

3.00

3.00

3.00

1500℃×3h ≥

3.00

2.90

3.00

3.00

2.96

3.00

MPa CMOR

110℃×16h ≥

4.0

3.5

8.0

7.0

4.0

13.0

1500℃×3h ≥

4.5

4.5

30.0

30.0

30.0

18.0

PLC/ % 

1500℃×3h

0~0.5

0~0.5

0~0.5

0~0.5

0~0.5

-0.1~0.5

Service temperature/ ℃ 

1700

1700

1700

1700

1700

1750

Water addition/ % 

5-7

5-7

5-6

5-6

5-6

4.5-5.5

Feature

Being as good as LC and ULC castables in workability, they have higher resistance to molten slag penetration and corrosion.

High density and strength, superior high temperature properties, good
resistance to erosion and abrasion.

Application

Linings of high temp. vessels, e.g., induction furnaces for iron or steel melting, molten metal containers and runners, black carbon reactor and gasifying furnaces.
Refractory components for secondary refining, e.g., monolithic lances for molten iron or steel treatment, RH snorkel, ladle purging plugs, etc.

Air ventilation system of BF, abrasion resistant blocks and trail blocks of heating furnaces.