Features: Hot Blast Stove silica brick has thermal expansion rate is low,residual quartz content, less true density is small,600 ℃ above thermal stability, high load softening point, creep rate low characteristic, Neat and clean appearance, precise dimensions. Mainly used in blast furnace stove top, the upper furnace and the grid body etc.
项 目Item | Ordinary silica brick | Hot Blast Stove with silica brick | ||||||
LXGZ-96 | LXGZ-95 | LXGZ-94 | Arck stove wall | Checkered brick | ||||
SiO₂ (%)≥ | 96 | 95 | 94 | 95 | 96 | 95 | 96 | |
Fe₂O₃ (%) ≤ | 1.0 | 1.2 | 1.4 | 1.0 | ||||
耐火度(℃)≥ | 1710 | 1710 | 1690 | 1710 | 1710 | 1710 | 1710 | |
0.2MPa荷重软化开始温度(℃)≥
0.2MPa Refractoriness Under Load |
1660 | 1650 | 1640胶结 硅石1620 | 1650 | 1660 | 1650 | 1660 | |
显气孔率(%) | 22(24) | 23(25) | 22(24) | 22 | 22 | 23 | 23 | |
常温耐压强度(MPa)≥Cold Crushing Strength | 重量≤20kg | 35(30) | 35(30) | 35(30) | 35 | 40 | 30 | 35 |
重量>20kg | 30(25) | 30(25) | 30(25) | |||||
体积密度(g/cm³)≥ Bulk Density | 2.34 | 2.35 | 2.35 | 2.35 | ||||
蠕变率(0 . 2MPa,20~50h,%) Creep rate | 0.8 | |||||||
热膨胀率(1000℃,%)≥Thermal expansion | 1.26 | |||||||
Note: Figures in brackets values for indicators of hand-molded brick |