Low cement castable
Low Cement Castable is calcium aluminate cement binding refractory castable and contains less than 2.5% CaO content. Base materials adopt ultrafine powder that have the same or similar chemical component with main material and have cohesive bonding function instead of part or most calcium aluminate cement. This kind of castable refractory belongs to concomitant hydration and cohesive bonding castable.
Main physicochemical indexes of Low Cement Castable
| Item/Index | M | A1 | A2 | |
| Chemical component | 65 | 80 | 90 | |
| Aggregate | Mullite | Corundum | Corundum | |
| Maximum service temperature | 1600 | 1700 | 1800 | |
| Refractorinee | 1750 | 1790 | 1790 | |
| Bulk density | 2.6 | 2.8 | 3.0 | |
| Linear change after sintered | 1000℃ | -0.2 | -0.2 | -0.2 |
| 1300℃ | ±0.5 | ±0.5 | ±0.5 | |
| Pressure strength after sintered | 110*24h | 30 | 30 | 30 |
| 1000*3h | 50 | 50 | 50 | |
| 1400*3h | 70 | 80 | 80 | |
Core Application Areas
- Industrial furnace linings: Applied to linings of boilers, kilns, electric arc furnaces and ladles, withstanding long-term high-temperature operation.
- Thermal processing equipment: Used in tundishes, risers and other steelmaking continuous casting equipment, resisting molten metal erosion.
- High-temperature structural parts: Utilized for furnace doors, flues and burner blocks, due to its low porosity and strong mechanical properties.