Neutral Ramming Mass for Induction Furnaces
Dry vibratable neutral ramming mass for induction furnaces
Application
The dry refractory ramming mass for lining induction furnaces is widely used for lining high-temperature steelmaking equipment, including medium-frequency induction furnaces for steel melting.
Description
The neutral dry ramming mass, based on corundum, mullite, and other neutral metal oxides, exhibits high wear resistance, thermal stability, and chemical stability. It is used for lining high-temperature steelmaking furnaces and large furnace units and is widely applied in medium-frequency induction furnaces for steel melting.
Specifications
| Item | NRam-70 | NRam-75 | NRam-80 | NRam-85 | |
|---|---|---|---|---|---|
| Al2O3 % ≥ | 70 | 75 | 80 | 85 | |
| Bulk Density 100°С×24h., g/cm3 ≥ | 2,6 | 2,75 | 2,8 | 2,9 | |
| Cold Modulus of Rupture, Mpa ≥ | 100°С×24h | 8,5 | 9 | 10 | 11 |
| 1400°С×3h | 13 | 14 | 15 | 16 | |
| Cold Compression Strength, Mpa ≥ | 100°С×24h | 60 | 65 | 70 | 75 |
| 1400°С×3h | 90 | 95 | 105 | 110 | |
| Wear, cm³ (at room temperature) ≤ | 9,6 | 8,5 | 7,3 | 6 | |
| Refractoriness Under Load 0,2Mpa, °С | 1450 | 1490 | 1530 | 1560 | |
| Thermal Shock Resistance (900°C, water-cooled), cycles ≥ | 20 | 20 | 20 | 20 | |
| Operating Temperature °С | 1550 | 1550 | 1600 | 1600 | |
| Linear Changing Rate % | -0,3 | -0,3 | -0,2 | -0,2 | |
Applications
- Ferrous metallurgy: working lining of tundish, iron runner of blast furnace, lining of medium-frequency induction furnace.
- Foundry industry: lining of electric arc furnaces, induction furnaces, and aluminum melting furnaces.