Civil Engineering Reference
In-Depth Information
Table 2.7
Chemical compositions of EAF-slags
Author
Qian et al.
(
2002
)
Luxan et al. (
2000
)
Manso et al. (
2006
)
Pellegrino and Gaddo
(
2009
)
Tossavainen et al. (
2007
)
Country
Singapore
Spain
Spain
Italy
Sweden
Type
Kirschsteinite
based
EAF-slag
Black EAF-slag (fusion of
scrap steel)
Black EAF-slag
EAF slag
EAF slag
Medium
Coarse
S1
S2
S1
S2
(contaminated
by white slag)
SiO
2
(%)
19.38
6.04
15.35
15.3
10.1
14.7
32.2
14.1
Al
2
O
3
(%)
5.27
14.07
12.21
7.4
5.70
7.20
3.70
6.70
Fe and/or Fe
x
O
y
(%)
FeO = 30.54
Fe
2
O
3
= 8.49
FeO = 27.41
FeO = 34.36
FeO ? Fe
2
O
3
= 42.5
FeO = 37.2
FeO = 44.8
FeO = 3.30
Fe
2
O
3
= 1.00
Fe = 0.10
FeO = 5.60
Fe
2
O
3
= 20.3
Fe = 0.60
CaO (%)
22.48
29.11
24.40
23.9
24.2
29.5
45.5
38.8
MnO (%)
1.10
15.58
5.57
4.5
5.10
5.70
2.0
5.0
MgO (%)
9.51
3.35
2.91
5.1
1.90
4.60
5.2
3.9
Free lime (%)
nd
nr
nr
0.45
nr
nr
nr
nr
Free MgO (%)
nr
nr
nr
*1.0
nr
nr
nr
nr
Basicity:
(CaO ? MgO)/
(Al
2
O
3
? SiO
2
)
1.30
1.61
0.99
1.28
1.65
1.60
1.41
2.05
nd not detected; nr not reported
