High alumina self flowing castable
Product application:
High-alumina self-flowing castables are widely used in thermal equipment with thin linings, difficult to construct or repair linings, etc. Self-flowing refractory castables are often used in those thermal equipments such as ladle, tundish, blast furnace iron runner and runner making, boiler tube protective layer and incinerator grate, heating furnace and cement kiln.
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Item/Grade | SF-50 | SF-55 | SF-60 | SF-65 |
Al2O3； % | ≥50 | ≥55 | ≥60 | ≥65 |
Bulk density； g/cm3 | ≥2.25 | ≥2.3 | ≥2.35 | ≥2.40 |
Cold crushing strength； Mpa | 110℃×24h ≥30 1350℃×3h ≥50 | 110℃×24h ≥35 1350℃×3h ≥55 | 110℃×24h ≥40 1350℃×3h ≥60 | 110℃×24h ≥40 1350℃×3h ≥65 |
Modulus of rupture Mpa | 110℃×24h ≥5 1350℃×3h ≥7 | 110℃×24h ≥6 1350℃×3h ≥9 | 110℃×24h ≥6 1350℃×3h ≥9 | 110℃×24h ≥6 1350℃×3h ≥10 |
Permanent Linear Change On Reheating； % | 1350℃×3h ±0.5 | 1350℃×3h ±0.5 | 1350℃×3h ±0.5 | 1350℃×3h ±0.5 |
Curing at room temperature not less than 72h | ||||
