Description
Refractory concrete is a special type of concrete made by mixing aggregates, binders, and additives in specific proportions, which is then directly poured to form the final product. Depending on the type of binder, refractory concrete can be classified into alumina refractory concrete, water glass refractory concrete, phosphate refractory concrete, and alumina sulfate refractory concrete, among others. Its fire resistance is similar to that of refractory bricks made from the same materials. It has high compressive strength at room temperature and good thermal stability.In addition, its production process is simple and can be made into various prefabricated blocks, which not only makes it convenient to use but also improves efficiency.
Specification
| Item | Grade | ||||
| NRH-300 | NRH-600 | NRH-900 | NRHS-900 | ||
| ω(Al2O3) / % | ≥30 | ≥35 | ≥40 | ≥40 | |
| Bulk Density/（g/cm3） | 110℃×24h | ≥2.0 | ≥2.0 | ≥2.0 | ≥2.0 |
| CCS / MPa | 72h Maintenance | ≥30 | ≥30 | ≥30 | ≥15 |
| 110℃×24h | ≥40 | ≥40 | ≥40 | ≥40 | |
| 300℃×3h | ≥50 | ||||
| 600℃×3h | ≥50 | ||||
| 900℃×3h | ≥50 | ≥40 | |||
| HPLC / % | 300℃×3h | ±0.5 | |||
| 600℃×3h | ±0.5 | ||||
| 900℃×3h | ±0.5 | ±0.5 | |||
Applications
Widely used in high-temperature industries such as metallurgy, cement, non-ferrous metals and glass,etc.
