Refractory

 

MONOLITHICS REFRACTORY


Magnesia Ramming Mixer for EAF and
general Purpose

    Made from high purity magnesite and synthetic magnesite with special additives.
High bulk density, quick sintering property, superior slag resistance and molten steel penetration resistance. Widely used for the bottom and slope of EAF and slope of DC-EAF.

Brand

Chemicals %

Grain Size (mm)

Service
Temp.
¡æ

Usage

Mgo¡Ý

SiO2¡Ü

Fe2O3¡Ü

CaO¡Ü

MR-1

75.0

2.5

5.0

15.0

 
0-5

 0-8

 

Repairing

  1750

Cool ramming and hot repairing the bottom and slope of EAF and slope of DC-EAF

MR-2

83.0

2.5

8.0

7.0

MR-3

85.0

2.0

7.0

6.0

MR-4

90.0

1.5

6.0

5.0

Electricity Conductive Magnesia Carbon Dry Ramming Mixes for DC-EAF Bottom Ramming

    Made from high quality fused Magnesite special graphite additives and binders.Quick sintering property,good errosion resistance,good electric conductivity.It is the ideal ramming mixes for the bottom of DC-EAF.

Type

Brand

Chemicals %

Grain size(mm)

Service Temp

Usage

Mgo

C

Electricity Conducted Cold
Ramming Mix

MER-1

80-85

6-9

0-5

1750 ¡æ

Cold ramming the bottom of DC-EAF

Electricity Conducted Hot Ramming Mix

MER-2

70-75

8-12

0-5

1750 ¡æ

Hot repairing the bottom of DC-EAF

Magnesia Gunning Mixes for EAF and converters

    Made from dead burnt magnesite or high purity magnesite with special binders and additives.
    Good sintering property, good errosion resistance. Widely used for hot repairing the slag lines of EAF and converter
.

Brand

Chemicals (%)

Grain Size(mm)

Service Temp.(¡æ)

Usage

MgO¡Ý

SiO2¡Ü

CaO¡Ü

MG-1

82.0

9.5

2.0

0-3

1750

Reparing the slaglines of EAF and converter

MG-2

85.0

8.0

2.0

MG-3

88.0

7.0

2.0

1800

MG-4

90.0

5.0

1.5


Magnesia-Dolomite Gunning Mixes for EAF and converters


    Made from good quality magnesite, synthetic dolomite with binders and additives.
    Good sintering property and errosion resistance. Widely used for repairing the slag lines of converter and EAF.

Brand

Chemicals (%)

Grain Size(mm)

Service Temp.(¡æ)

Usage

MgO¡Ý

SiO2¡Ü

CaO¡Ü

MDG-1

81.0

1.5

9.0

0-4

1750

Reparing the slaglines of EAF and converter

MDG-2

85.0

3.5

15.0


Gunning Mix for Ladles and Tundishes

    Made from good quality magnesite, bauxite or magnesite-alumina spinel with special binders and additives. Good sintering property and errosion resistance.

Brand

Chemicals %

Grain Size(mm)

Service
Temp.¡æ

Appli.

Mgo¡Ý

SiO2¡Ü

Fe2O3¡Ü

CaO¡Ü

MAG

70.0

9.5

15.0

2.0

 

0-3

1750

Repairing the linings of ladle and tundish

MDG

80.0

7.0

 

10.0

1800


Hot Patching Mix for Repairing Charge Pad of Converter

    For repairing the charge pad of converter. Good adhesion property, good errosion resistance and quick sintering property etc.

Grade

Chemicals %

B.D.
g/cm 3

C.C.S.(Mpa)

Grain size
(mm)

Mgo ¡Ý

SiO 2 ¡Ü

Cr 2 O 3 ¡Ý

CaO ¡Ü

110 ¡æ x3hrs ¡Ý

1600 ¡æ x3hrs ¡Ý

Magnesia
Mix

88.0

2.5

2.0

1.5

2.5

20

55

0-3

Magnesia
CarbonMix

70.0

2.0

C ¡Ý 8 .0

2.35

15

35

0-8


Filling and Repairing Mix for Tapholes

    Filling Mix for Tapholes
    Under normal operation condition, the automatic openning rate has been up to 100%; safety rate: 100%.
    Repairing Mix for Tapholes
    Made from good quality magnesite and special addictives and binders. Quick sintering property, good errosion resistance and good spalling resistance.

                           Item
Name       

Chemicals %

Grain size(mm)

B.D.(g/cm3)

Appli.

Mgo¡Ý

SiO2¡Ü

Fe2O3¡Ü

CaO¡Ü

Filling Mix
For Tapholes

50.0

10.0

28.0

 

2-5

2.25-2.35

Tapholes and tapping Iaunders of EAF and converter

Repairing Mix For Tapholes

TR-1

92.0

0.3

4.0

2.0

TR-2

93.0

0.5

4.0

2.0

0-2

2.35-2.45

Self-flow Castables

    Self leveling and degassing without vibration. More suitable for lining where the space is limited. Better thermal shock resistance than vibrated castables.

Brand

Chem.Comp. %

B.D (g/cm3)

P.L.C. %

C.C.S. Mpa

Service Temp ¡æ

Self-flow
Value %

Al2O3 ¡Ý

SiO2 ¡Ü

110¡æx24hrs¡Ý

1000¡æx3hrs¡Ý

1550¡æx3hrs¡Ý

1000¡æx3hrs

1550¡æx3hrs

110¡æx24hrs¡Ý

1000¡æx3hrs¡Ý

1550¡æx3hrs¡Ý

SC-1

72.0

27.0

2.75

2.73

2.75

0-0.20

0-0.20

50.0

90.0

100.0

1550

110

SC-2

65.0

28.0

2.45

2.40

2.45

0-0.20

0-0.30

30.0

80.0

90.0

1500

100


Castables for Ladles and Tundishes

    Made from corundum, good quality magnesite, special bauxite or magnesite-alumina spinel and addictives.
    Quick sintering property, good errosion and spalling resistance, convenient installation, easy removing and long service time.

Brand

Chem.Comp. %

B.D (g/cm3)

P.L.C. %

C.C.S. (Mpa)

Service
Temp ¡æ

Al2O3 ¡Ý

MgO
¡Ý

SiO2 ¡Ü

110¡æx24hrs¡Ý

1000¡æx3hrs¡Ý

1550¡æx3hrs¡Ý

1000¡æx3hrs

1550¡æx3hrs

110¡æx24hrs¡Ý

1000¡æx3hrs¡Ý

1550¡æx3hrs¡Ý

AC-1

90

7

 

3.10

3.00

2.95

0-0.20

0-0.8

30

45

70

Wall and bottom of large size ladles

AC-2

72

11

9.5

2.90

2.88

2.80

0-0.20

0.5-1.5

60

50

60

Wall and bottom of small and medium size ladles

AC-3

32

60

 

2.90

2.85

2.80

0-0.20

0.5-1.2

45

45

40

Slaglines of small and medium ladles


High Alumina and low Cement Castable

                      Item
Index

Chemicals (%)
B.D.¡Ý (g/cm3)
110¡æx24h
C.C.S ¡Ý
(Mpa)
Linear change
on reheating
¡æ ¡Ý
Refractoriness
Mpa ¡Ý
Bending strength
(kg/cm2)
Al2O3¡Ý  
ZrO2
CaO
110¡æx24h
1450¡æx3h
1450¡æx3h
1500¡æx3h
Low cement
LDJ-60
60
 
   
2.5
40
80
+/-0.5
 
1750
 
LDJ-70
70
 
  
2.6
40
80
+/-0.5
 
1750
 
LDJ-75
75
 
    
2.65
45
85
+/-0.5
 
1770
 
LDJ-80
80
 
   
2.7
45
90
+/-0.5
+/-0.5
1790
 
Special low cement
LTDJ-1
75
3
   
2.7
45
90
 
+/-0.5
1790
 
LTDJ-2
 
 
  
  
 
 
 
 
 
 
High alumina cement
G3L
85
  
   
  
250
 
 
1
1790
80
G2L
60
 
   
 
200
 
1
 
1690
40
G2N
42
 
  
 
200
 
(1350¡æ)
1
 
1650
40
G1L
60
 
 
 
100
 
1
 
1690
35
G1N2
42
 
 
 
100
 
(1350¡æ)
1
 
1650
35
G1N1
30
 
 
 
100
 
(1300¡æ)
1
 
1610
35
Silicate cement corundum
GN
30
 
 
 
200
 
(1200¡æ)
1
 
 
 
Corundum
LGJ-5
92
 
 
2. 76
50
(815¡æx3h)
40
 
(815¡æx3h)
-0.3