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Refractory for electric-arc furnace

Product Description:

 

Physical & chemical indexes of material for electric wall Magnesia carbon brick:

Name
EM1021
EM1221
EM1521
EM1203
EM1511
EM1512
EM1810
EM2521
Bulk Density(g/cm3)
3.02
2.99
2.95
2.92
2.96
2.95
2.93
2.86
Apparent poposity(%)
3.5
3.2
3.0
3.3
3.0
3.0
3.3
3.1
Cold crushing strength(MPa)
55
46
43
38
44
43
40
34
Modulus of rupture at elevated temp(MPa)at 1400° C
15.3
13.8
12.5
5.0
12.7
13.8
5.5
10.0
Chemical analysis(%) MgO
83.8
83.2
80.0
77.0
80.3
78.4
79.1
68.6
F.C
10.1
12.0
14.8
19.8
15.0
14.8
18.6
24.0

 

 

physical-chemical characteristics of electric-arc furnace gunning:
Nmae

Magnesia-calcian

GD-DP85
GD-DP75
GD-DP73
GD-DP88
Chemical analysis(%)
Phosphatse combination
Phosphatse combination
Unphosphatse series
Unphosphatse series
MgO
85
75
73
88
CaO
3
16
17
2
Grain size(mm)
3
3
3
3
+1mm(%)
35
30
42
45
-0.074mm(%)
35
30
32
30
Modulus of rupture at elevated temp(MPa)at 1400° C
1.7
2.9
1.0
0.8
Features
Hot gunning

Physical & chemical indexes of castable for electric furnace roof:
Quality

High Alumina

Name
GD-A76
GD-A69
GD-A67
Bulk Density(g/cm3)
2.96
2.77
2.72
Apparent poposity(%)
15.9
14.8
15.8
Crushing strength(MPa)
39.7
32.9
29.9
Modulus of rupture at elevated(MPa)at 1400° C
3.9
2.5
2.5
热线膨胀率(MPa) 1500° C
+1.5
+1.16
+1.21
残存膨胀率(MPa) 1500° C×3h
+0.17
+1.35
+1.40
Chemical analysis(%) SiO2
21
25
26
Al2O3
76
69
67
 

Physical & chemical indexes of material for electric furnace bottom:
Quality

Magnesia-calciam

Name
GD-DD95
GD-DD85
GD-DD76
Bulk Density(g/cm3)1500° C×3h
2.80
2.75
2.70
Crushing strength(MPa)1500° C×3h
10.2
7.5
20.0
Chemical analysis(%) MgO
95
85
76
SiO2
2.5
-
3.0(Fe2O3)
CaO
1.0
5
18
Features
Dry
Hot gunning
Dry
 

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