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 % A2O3+MgO% | ≥70 | ≥80 | ≥85 | ≥95 | |
| CCS, MPa CCS | 110℃×24h 110℃×24 | ≥20 | |||
| 1000℃×3h 1000℃×3 | ≥30 ≥ 3 0 ≥ 3 0 | ||||
| Test Temperature×3h | ≥50 1500℃ ≥ 5 0 1500 ℃ ≥ 5 0 1500 ℃ | ≥50 1550℃ ≥ 5 0 1550 ℃ ≥ 5 0 1550 ℃ | ≥60 1550℃ ≥ 6 0 1550 ℃ ≥ 6 0 1550 ℃ | ≥60 1600℃ ≥ 6 0 1600 ℃ ≥ 6 0 1600 ℃ | |
| PLC, % ℃×3h PLC， | -0.5~+1.5 1500℃ | -0.5 ~ +1.81550℃ | -0.2~+1.8 1550℃ | 0~ +1.0 0~ +1.01600℃ | |
Alumina bubble castable is mainly applied in high-temperature industrial equipment requiring heat insulation and corrosion resistance.
Key Application Fields
- Furnace linings: Used for lining of industrial furnaces like blast furnaces, electric arc furnaces and ladles, providing thermal insulation and protecting furnace bodies.
- Thermal equipment components: Applied in high-temperature pipelines, heat exchangers and reactor linings to resist high temperature and chemical erosion.
- Refractory structures: Utilized in kiln crowns, furnace doors and other high-temperature bearing parts due to its low bulk density and good thermal stability.