Description
Phosphate bonded corundum castable is made of fused white corundum aggregate, white corundum fine powder, and activated alumina as main raw materials, with aluminum dihydrogen phosphate solution or phosphoric acid solution as binder, and solidified by pure calcium aluminate cement or heating.
Phosphate bonded corundum castable has the characteristics of high refractoriness, good corrosion resistance, high strength and strong wear resistance, strong adhesion, be baked quickly without bursting.
Specification
| Items | Grades | |||
| PA-80G | PA-85G | PA-90 | ||
| ω(Al2O3) / % | ≥80 | ≥85 | ≥90 | |
| CMOR/ MPa | 110℃×24h | ≥5 | ≥6 | ≥6 |
| 1100℃×3h | ≥6 | ≥7 | ≥7 | |
| CCS/ MPa | 110℃×24h | ≥40 | ≥45 | ≥50 |
| 1100℃×3h | ≥55 | ≥60 | ≥65 | |
| Density（g/cm3） | ≥2.8 | ≥2.85 | ≥2.9 | |
| HPLC / % | 1100℃×3h | ±0.4 | ±0.4 | ±0.4 |
Applications
Phosphate bonded corundum castable is mainly used for baking-free quick repair of linings in various industrial high-temperature kilns and equipment.
