Description
This semi-self-flowing high-strength castable offers superior physical strength compared to conventional self-flowing formulations, requiring vibration-assisted installation for optimal placement. Engineered with premium bauxite aggregates, ultra-fine powder technology, and high-performance additives, the material delivers excellent rheological properties and sustained high-temperature performance. Available in three alumina grades (JH-BZ55, JH-BZ60, JH-BZ65) with long-term service temperatures up to 1350°C. Proven in demanding reheating furnace environments, the product has been successfully adopted by Yansteel, Shougang, Shaogang, and Jinan Steel across more than 80 steelmaking facilities totaling over 300 furnaces, earning consistent recognition from users.
Key Features
- Higher physical strength than self-flowing castables, requiring vibration-assisted placement for dense installation
- Premium bauxite aggregate combined with ultra-fine powder and optimized additives for enhanced rheology
- Sustained service temperature up to 1350°C with consistent bulk density ranging 2.30-2.40 g/cm³
- Three alumina grades (55%, 60%, 65% Al₂O₃) available to match specific application requirements
- Proven track record in 300+ reheating furnaces across 80+ steelmaking facilities
Application
- Water-cooled pipe coating and insulation in steel reheating furnaces
- Pusher furnace and walking-beam furnace lining applications
- High-temperature zone coating where semi-self-flowing placement is preferred
- Steel plant heating furnace water-cooled tube covering systems
- Industrial furnace areas requiring vibration-assisted castable installation
Technical Specifications
Physical and chemical performance indicators of the Water-Cooled Pipe Coating High-Strength Castable
| Grade | JH-BZ55 | JH-BZ60 | JH-BZ65 |
| Al2O3 (%) | 55 | 60 | 65 |
| Bulk Density (g/cm3) at 110°C×16h | 2.3 | 2.35 | 2.4 |
| Permanent Linear Change (% at 1350°C×3h) | -0.5~+0.5 | -0.5~+0.5 | -0.5~+0.5 |
| Modulus of Rupture (MPa) at 110°C×16h | 6 | 6 | 6 |
| Modulus of Rupture (MPa) at 1350°C×3h | 8 | 8 | 9 |
| Cold Crushing Strength (MPa) at 110°C×16h | 30 | 35 | 35 |
| Cold Crushing Strength (MPa) at 1350°C×3h | 50 | 55 | 55 |
| Long-term Service Temperature (°C) | 1350 | 1350 | 1350 |
| Application | Water-cooled pipe coating | Water-cooled pipe coating | Water-cooled pipe coating |
| Packaging | 25kg/bag + ton bag, Moisture-proof, Shelf life: 6 months | 25kg/bag + ton bag, Moisture-proof, Shelf life: 6 months | 25kg/bag + ton bag, Moisture-proof, Shelf life: 6 months |
