Products - Supplies for steel industry - Refractory bricks
IWITO has an extensive experience in the steel industry and has developed the capability of providing High-alumina refractory products for blast furnace and EAF roof, Magnesia-Calcium bricks, Magnesia-Chrome bricks, High-Chrome bricks, High-quality Magnesite bricks, ramming mixes, castables, refractory coating and gunning materials.
HIGH-ALUMINA BRICKS FOR LADLES
item |
high-alumina brick for ladle
|
ultra-low expansion high-alumina brick
|
AL2 O3% |
75 |
80 |
85 |
78 |
85 |
Fe2 O3% ≤ |
|
|
|
2.0 |
2.0 |
| refractoriness ≥ 0C |
|
|
|
1790 |
1800 |
0.2 MPa refractoriness under load ≥ |
1510 |
1530 |
1560 |
1550 |
1600 |
linear change after heating % |
(1500 0C×2h) |
+0.1
-0.5 |
|
|
0
+0.6 |
0
+1.0 |
(1550 0C×2h) |
|
+0
-0.4 |
+0
-0.4 |
|
|
apparent porosity ≤ |
28 |
21 |
20 |
19 |
20 |
cold crushing strength MPa ≥ |
39.2 |
65 |
65 |
70 |
80 |
bulk density g/cm3 ≥ |
2.65 |
2.8 |
2.85 |
2.75 |
2.90 |
REFRACTORLES FOR CONTINUOUS CASTING
index
item |
AL2O3-C sliding plate |
magnesia-carbon sliding plate |
AL2O3-ZrO2-C sliding plate |
AL2O3 % ≥ |
75 |
|
72 |
ZrO2% |
|
|
5 |
MgO % ≥ |
|
92 |
|
C % ≥ |
7 |
2 |
6 |
bulk density g/cm3 ≥ |
2.9 |
3.1 |
3.05 |
cold crushing strength MPa ≥ |
90 |
100 |
120 |
apparent porosity% ≤ |
8 |
8 |
8 |
refractoriness 0C ≥ |
1780 |
1780 |
1780 |
hot bending strength Mpa (1400 0C×0.5h)≥ |
10 |
8 |
13 |
|
