Refractory

 

High Alumina Bricks


Alumina-Magnesia-Carbon Brick

    Made of 96-98% MgO electric fused magnesite, super quality bauxite and 194-196 large crystal natural flake graphite, with antioxidation addictives and special resin bond. With superior resistance to slag, corrossion, oxidation, thermal shock and constructional spalling etc.Providing customer oriented and cost effective designing, manucfacuring, exporting of the alumina magnesia carbon bricks .This type of new products used as lining material in the various ladles, LFV refining furnace and LF ladles have experienced an average lifetime from 70 heats to 130 heats in the past 3 years.


 Alumina-spinel-carbon brick

         Item
Index

Al2O3%
¡Ý

MgO%
¡Ý

C%
¡Ý

A.P.(%)

B.D.
(g/cm3)

C.C.S
(Mpa)

Refactorines
Under load
¡Ý

LLJT-60

60

12

8

8

   

45

1650

LLJT-55

55

5-10

5

10

  

40

1600

LLJT-50

50

5-10

5

18

  

40

1550

High-Alumina Product Series For Blast Furnace

    It is one of our main products whose main mineral component is mullite and corundum phases, with excellent high temperature physical properties and chemical corrosion resistance, widely used in every part of blast furnace lining with good work ability. It has been used in large volume blast furnace with a good result.

            Index

Item

High Alumina brick
For blast furnaces

High-Alumina
Carbon brick for
blast furnaces

Refractories for
blast furnaces
¡°ceramic cup¡±

High Alumina
brick for hot
stoves

GL-55

GL-65

LGL-75

Unfired
Al2O3-C

Fired
Al2O3-C

Mullite
Bonded
Corundum brick

Combined corundum
brick

Mullite
brick

RL-65

RL-55

Al2O3¡Ý

55

65

75

60

60

85

78

70

65

55

Fe2O3¡Ü

2.0

2.0

2.0

2

2

 

 

 

 

 

Refractoriness ¡Ý

1770

1790

1790

1790

1790

 

 

 

1790

1700

Refractoriness under load¡Ý

1480

1500

1520

1650

1650

1700

1660

1700

1500

1470

Liner change after reheating
1500¡æx2h)

0-0.2

0-0.2

0-0.2

 

 

¡À0.2

¡À0.2

¡À0.2

+0.1

-0.4

+0.1

-0.4

C.C.S
(Mpa)

49.0

58.8

70

60

60

90

98

88

49.0

44.1


High Alumina bricks for EAF and Ladles

                Index

 item

 High alumina brick
 for EAF roof

Unfired high
alumina
brick for EAF roof

    Pre-masonry high
alumina brick for
 central area of EAF

LDL-80

DL-80

DL-75

LBDL-80

LBDL-75

LZDL-80

LZDL-75

Al2O3%¡Ý

80

80

75

80

75

80

75

Refractoriness
under load

1550

1550

1530

1560(T2)

1530(T2)

1520

1500

Linear change
after reheating

0-0.3

0-0.3

0-0.4

 

 

0-0.5

0-0.5

C.C.S
(Mpa)

78

78.5

68.6

60

60

50

 

        Index

Item

High alumina brick for ladle

Unfired high alumina
brick for ladle

LCL-55

CL-75

LCL-80

LCL-85

CBL-75

CBL-80

Al2O3%¡Ý

55

75

80

85

75

80

Refractoriness
Under load

1470

1510

1530

1560

1530

1560

Linear change
After reheating

 

 

0-0.4

0-0.4

0-0.3

0-0.3

C.C.S
(Mpa)

45

39.2

65

65

70

70


ELECTRIC FUSED REFRACTORY FOR GLASS INDUSTRY

 

AZS41#

AZS36#

AZS33#

Chemical Composition(%)

 

 

 

AL2O3

45.5

48.5

49.5

ZrO2

41

36

33

Si2O2

12.0

14.0

15.5

Fe2O2

0.10

0.10

0.10

TiO2

0.05

0.05

0.05

Na2O

  1.20

1.30 

1.40 

Bulk Density(g/cm3)

 

 

 

PT

 

 

  3.40

QX

 

 

  3.45

MS

 

 

  3.50

WS

3.90

3.80

3.70

WS*

3.80

3.70

3.60

Physical Properties

 

 

 

Apparent  Porosity(%)

1.0

1.0

1.0

Bulk Density(g/cm3)

3.95

3.85

3.75

True Density(g/cm3)

4.00

3.90

3.80

Cold Crushing Strength(Mpa)

350

350

350

Refractoriness(¡æ)

1730

1710

1710

Mpa Softening Temp.Under Load(¡æ)

1700

1700

1700

Bubbling  Tendency(%)

0.5

0.5

0.5

Exudation Temp.of Glass Melt(mm/24hr)

1500

1500

1500

Thermal Expansion(%),100¡æ

1.00

1.20

1.30

 Crystalline  phase  Composition(%)

0.80

0.80

0.80

Baddeleyite  Crystalline  phase

 

 

 

Corundum-Baddeleyite Eutectic Crystalline phase

12

11

10

Glass  phase

70

70

70

 

18

19

20