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| Refractories Castables For Metallurgical Industry-Castables Refractories For Electrical Furnace |
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| Castables Refractories For Electrical Furnace |
Technical Data
| Brand |
DA-70 |
DA-90 |
RM-80 |
RM-88 |
| Chemical composition(%) |
MgO |
- |
- |
≥80 |
≥88 |
| CaO |
- |
- |
7-9 |
5-7 |
| Fe2O3 |
- |
- |
5-7 |
5-7 |
| Al2O3 |
70 |
90 |
- |
- |
| Bulk density(g/cm3) |
110℃×24h |
2.8 |
2.95 |
- |
- |
| 1300℃×3h |
- |
- |
≥2.75 |
≥2.82 |
| 1600℃×3h |
2.75 |
2.90 |
- |
- |
| Cold crush strength(Mpa) |
110℃×24h |
25 |
60 |
- |
- |
| 1300℃×3h |
- |
- |
≥15 |
≥18 |
| 1500℃×3h |
- |
- |
≥35 |
≥40 |
| 1600℃×3h |
50 |
90 |
- |
- |
| Modulus of rupture( Mpa) |
110℃×24h |
5.0 |
6.5 |
- |
- |
| 1300℃×3h |
- |
- |
≥2.0 |
≥2.0 |
| 1500℃×3h |
- |
- |
≥7.0 |
≥7.0 |
| 1600℃×3h |
10.0 |
12 |
- |
- |
| permanent linear change (%) |
1300℃×3h |
- |
- |
0~-1.0 |
0~-1.0 |
| 1500℃×3h |
0.3-1.2 |
0.3-1.2 |
0~-1.5 |
0~-1.5 |
| 1600℃×3h |
±0.2 |
±0.2 |
- |
- |
| Forming method |
- |
- |
degasifying by steel fork or ramming by flat vibrator,the thickness of added materials less than 140mm per time.prothecting the shape of furnace by the steel beofre the first using. |
| main use |
- |
- |
slope lining of DC stove,hot-repqiring materials or working lining for chamber of EBT stove. |
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