The steel fibre hard-wearing castable is produced by adding heat-resistant steel fiber to hard-wearing castable so as to greatly raise the thermal-shock resistance of hard-wearing castable. The product exhibits higher tensile strength, better thermal-shock resistance and mechanical wear resistance, which help improve the service life of circulating fluidized-bed combustion boiler.
Main Physicochemical Index for Steel fibre Reinforced Castable
Item | GXJ55 | GXJ60 | GXJ65 | GXJ70 | |
AI2O3(%);≥ | 55 | 60 | 65 | 70 | |
Volume density(g/c㎥); | 110℃×16h | 2.3 | 2.4 | 2.5 | 2.5 |
Compression strength(MPa);≥ | 110℃×16h | 45 | 50 | 50 | 50 |
1350℃×3h | 65 | 70 | 70 | 70 (1500℃×3h) | |
Rupture strength(MPa);≥ | 110℃×16h | 7 | 7 | 7 | 7 |
1350℃×3h | 8 | 8 | 8 | 8 (1500℃×3h) | |
Linear change rate(%) | 1300℃×3h | 0~-0.5 | 0~-0.5 | 0~-0.5 | +0.5~-0.5 (1500℃×3h) |
Long-term use temperature | 1350 | 1350 | 1400 | ||
Used part | All parts of furnace | ||||
