Description
High-alumina castables are made of high-alumina bauxite as the main raw material, with high refractoriness, high refractoriness under load, good thermal shock resistance and mechanical strength.
Specifications of High Alumina Castables
| Items | Grades | |||||
| AL-50 | AL-60 | AL-65 | AL-70 | AL-80 | ||
| ω(Al2O3) / % | ≥50 | ≥60 | ≥65 | ≥70 | ≥80 | |
| Refractoriness / CN | ≥170 | ≥172 | ≥172 | ≥172 | ≥178 | |
| Density /(g/cm3) | 110℃×24h | ≥2.15 | ≥2.30 | ≥2.40 | ≥2.45 | ≥2.65 |
| CMOR / MPa | ≥4.0 | ≥5.0 | ≥6.0 | ≥6.0 | ≥7.0 | |
| CCS / MPa | ≥25 | ≥30 | ≥35 | ≥35 | ≥40 | |
| HPLC / % | ±0.8 (1400℃×3h) | ±0.8 (1500℃×3h) | ||||
Applications
High-alumina castable is mainly used in blast furnaces, electric furnaces, rotary kilns and other equipment in high-temperature industrial fields such as metallurgy, building materials, and chemicals.
High-alumina castables have high refractoriness, high mechanical strength and good thermal shock resistance. So they can resist high-temperature melt erosion, mechanical wear and frequent thermal shock, ensuring stable operation and long life of the equipment.
Our services: refractory technicians, refractory installation drawings, refractory bricks and castables, refractory masonry services, refractory mixes and precast cell, special shaped bricks, insulation materials, installation supervision, accident investigation and resolution, other customized services.
