Carbon containing refractory product
 
Alumina-carbon refractory product for continuous casting
Burning micro-porous alumina-carbon brick
Resin bonded alumina-magnesia-carbon
Magnesia-carbon brick
Alumina-carbon lump
 
 
 
 
 
Slide gate
Nozzle
 
Carbon containing refractory product
    
    Carbon containing refractory product includes steelmaking converter, every kind of magnesia-carbon for ladle, magnesia-alumina-carbon brick, torpedo car, alumina-SiC-Carbon brick for ladle, alumina-carbon shroud for continuous casting(including slab continuous casting), submersed nozzle, stopper, slide gate, nozzle and its slide assembly.
    
Alumina-carbon refractory product for continuous casting
Performance index
Item

Index

CLT-A

CLT-B

QLT-A

QLT-B

ZSLT-A

ZSLT-B

ontology

Permeability cycle

Ontology part

Slag line part

Permeability part

Ontology part

Slag line part

Al2O3% No less than

40

85

50

35

 

35

45

 

60

55

C % No less than

27

 

25

20

15

15

20

15

25

23

ZrO2 % No less than

 

 

 

 

70

 

 

50

 

 

Apparent porosity %

≤20

 

12-20

≤20

 

 

≤20

 

≤18

≤19

Cold crushing strength MPa No less than

20

 

15

17

 

 

16

 

16

15

Cold modulus of rupture MPa
No less than

6

 

4

6

 

 

4

 

5

5

Thermal shock stability, cycle
No less than

5

 

5

5

 

 

5

 

5

5

Air permeability L/min No less than

 

100

 

 

 

5

 

 

 

 

 
Burning micro-porous alumina-carbon brick
Performance index

Item

Index

WLT-1

WLT-2

WLT-3

Al2O3 % No less than

65

60

55

C % No less than

11

11

9

TFe % No more than

1.5

1.5

1.5

Cold crushing strength MPa No less than

70

60

50

Bulk density g/cm3 No less than

2.85

2.65

2.55

Apparent porosity % No more than

16

17

18

Dissolution index for hot metal % ?No more than

2

3

4

Thermal conductivity coefficient W/(m.K)(0℃ —800℃)
No less than

13

13

13

Alkaline resistance(declining rate of strength)% No more than

10

10

15

Permeability μm2 No more than
(mDa)

4.94X10-4
(0.5)

1.97X10-3
(2.0)

1.97X10-3
(2.0)

Average aperture μm No more than

0.5

1

1

<1μm porous volume % No less than

80

70

70

 
Resin bonded alumina-magnesia-carbon
Performance index
Item

Index

LMT-76

LMT-74

LMT-72

Al2O3+MgO% ≥

76

74

72

MgO% ≥

14

12

10

C,% ≥

8

8

7

0.20MPa Refractoriness under load ℃ ≥

1670

1630

1600

Apparent porosity % ≤

8

9

10

Cold crushing strength MPa ≥

55

45

40

Bulk density,g/cm3 ≥

2.90

2.85

2.80

 
Magnesia-carbon brick
Performance index
Item

Index

MT10A

MT10B

MT10C

MT14A

MT14B

MT14C

MT18A

MT18B

MT18C

MgO% ≥

80

78

76

76

74

74

72

70

70

C% ≥

10

10

10

14

14

14

18

18

18

Apparent porosity % ≤

4

5

6

4

5

6

3

4

5

Bulk density g/cm3 ≥

2.90

2.85

2.80

2.90

2.82

2.77

2.90

2.82

2.77

Cold crushing strength MPa ≥

40

35

30

40

35

25

40

35

25

Hot modulus of rupture MPa 1400℃ ,30min,MPa ≥

6

5

4

12

8

5

10

7

4

 
Alumina-carbon lump
Performance index

Item

Index

TKL-1

TKL-2

Al2O3,% ≥

58

55

SiC,% ≥

5

4

C,% ≥

14

12

0.20MPa Refractoriness under load℃ ≥

1630

1600

Apparent porosity % ≤

13

15

Cold crushing strength MPa ≥

30

25

Cold modulus of rupture MPa ≥

12

9

Bulk density,g/cm3 ≥

2.5

2.5

Average linear expansion coefficient(1000℃)

2.4X10-6

2.4X10-6

 
 
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