alumina-magnesia castable
Alumina Magnesia Refractory Castables are refractory castables with corundum as aggregate, spinel material, and corundum powder as a matrix, and pure calcium aluminate cement as a binder. Its chemical composition is Al2O3 89%~93%, MgO 5%~8%. It has good corrosion resistance and slag penetration resistance and can be used as a large ladle lining for continuous casting.
| Item | Specification | ||||
| AMC70 | AMC80 | AMC85 | AMC95 | ||
| Al2O3+MgO % | ≥70 | ≥80 | ≥85 | ≥95 | |
| CCS, MPa | 110℃×24h | ≥20 | |||
| 1000℃×3h | ≥30 ≥ 3 0 | ||||
| Test Temperature×3h | ≥50 1500℃ ≥ 5 0 1500 ℃ | ≥50 1550℃ ≥ 5 0 1550 ℃ | ≥60 1550℃ ≥ 6 0 1550 ℃ | ≥60 1600℃ ≥ 6 0 1600 ℃ | |
| PLC, % ℃×3h | -0.5~+1.5 1500℃ | -0.5 ~ +1.81550℃ | -0.2~+1.8 1550℃ | 0~ +1.01600℃ | |
- Iron & Steel Industry
- Converter/EAF: Slag line, taphole (resists slag erosion)
- Ladle/tundish: Molten steel contact linings (blocks slag penetration)
- Blast furnace: Hearth, hot blast stove (handles 1400–1600°C)
- Non-Ferrous Smelting
- Aluminum electrolysis cells: Sidewall/bottom linings (resists molten Al/electrolyte)
- Copper smelting furnaces: Furnace linings (tolerates sulfide slags)
- Cement/Glass Industry
- Cement kilns: Transition zone (resists alkali corrosion)
- Glass furnaces: Regenerator linings (handles thermal cycling)
- Waste/Petrochemical Equipment
- Waste incinerators: Furnace linings (resists acidic/alkaline gases)
- Cracking furnaces: Combustion chamber linings (thermal shock resistance)