Introduction
Hot metal ladle permanent linings are primarily installed using high alumina castables through monolithic casting. These castables are formulated with high-alumina aggregates and advanced binder systems to deliver excellent high-temperature performance, strong resistance against slag and iron erosion, and good thermal shock stability. The material also provides effective thermal insulation to minimize hot metal temperature drop during transportation. Available in JX-TBJ60, JX-TBJ65 and JX-TBJ70 grades with alumina content ranging from 60% to 70%, suitable for different service conditions.
Key Advantages
01
High Strength & Durability
Cold crushing strength reaches ≥30 MPa at 110℃ and ≥50 MPa at 1350℃, ensuring reliable protection for the ladle shell under severe service conditions.
02
Excellent Thermal Shock Resistance
Withstands rapid temperature fluctuations during hot metal charging, preventing cracking and spalling of the permanent lining.
03
Good Thermal Insulation
Reduces heat loss and minimizes hot metal temperature drop during transportation, improving energy efficiency and operational stability.
Specification
| Item | JX-TBJ60 | JX-TBJ65 | JX-TBJ70 | |
| Al₂O₃ (%) | ≥60 | ≥65 | ≥70 | |
| Bulk Density (g/cm³) | 110℃×24h | ≥2.3 | ≥2.4 | ≥2.5 |
| 1350℃×3h | ≥2.25 | ≥2.35 | ≥2.45 | |
| Cold Crushing Strength (MPa) | 110℃×24h | ≥30 | ≥30 | ≥30 |
| 1350℃×3h | ≥50 | ≥50 | ≥50 | |
| Cold Modulus of Rupture (MPa) | 110℃×24h | ≥4 | ≥4 | ≥4 |
| 1350℃×3h | ≥6 | ≥6 | ≥6 | |
| Application | Ladle, Torpedo car permanent castable | |||
