| 高炉用耐火砖 |
| 项目 |
黏土质 |
高铝质 |
改性高铝砖 |
AL2O3-C砖 |
刚玉砖 |
莫来石砖 |
| ZGN-42 |
GN-42 |
GL-48 |
GL-55 |
GL-65 |
GLL-65 |
GLS-70 |
烧成 |
不烧 |
GY-97 |
MZ-70 |
| AL2O3 % |
≧42 |
≧42 |
≧48 |
≧55 |
≧65 |
≧65 |
≧70 |
≧60 |
≧60 |
≧97 |
≧70 |
| FE2O3 % |
≦1.6 |
≦1.7 |
≦2.0 |
≦2.0 |
≦2.0 |
≦2.0 |
≦2.0 |
C≧12 |
C≧12 |
|
≦1.0 |
| 耐火度 ℃ |
≧1750 |
≧1750 |
≧1750 |
≧1770 |
≧1790 |
≧1790 |
≧1790 |
|
|
|
≧1790 |
| 显气孔率 % |
≦15 |
≦16 |
≦18 |
≦19 |
≦19 |
≦19 |
≦19 |
≦15 |
≦10 |
≦21 |
≦23 |
| 体积密度 g/cm3 |
|
|
|
|
|
|
≧2.6 |
|
|
|
≧2.55 |
| 常温耐压强度 Mpa |
≧58.8 |
≧49.0 |
≧49.0 |
≧49.0 |
≧58.8 |
≧60 |
≧60 |
≧50 |
≧40 |
≧60 |
≧55 |
| 荷重软化温度 ℃ |
≧1450 |
≧1430 |
≧1450 |
≧1480 |
≧1500 |
T2≧1550 |
T2≧1520 |
≧1650 |
≧1650 |
≧1700 |
T2≧1700 |
| 重烧线变化 |
1450℃×3h
0~-0.2
|
1450℃×3h
0~-0.3 |
1450℃×2h
0~-0.2 |
1500℃×2h
0~-0.2 |
1500℃×2h
0~-0.2 |
1500℃×2h
0~+0.4 |
1500℃×2h
0~-0.2 |
常温抗折≧12MPA
|
常温抗折≧15MPA
|
1600℃×2
0~-0.2 |
|
| 热震稳定性 1100℃(水冷)次 |
|
|
|
|
|
|
|
≧8 |
≧20 |
|
|
| 使用部位 |
高炉炉身,炉腹,炉腰,炉底
|
冷却壁
|
炉身,炉腹,炉腰,炉缸
|
炉身,炉腹,炉腰,炉缸,陶瓷杯 |
|
|