种类 Item

Al₂O₃%

Fe₂O₃%

显气孔率 Gas hole Indicatiing rate %

常温耐压强度 pressure at Normal Temoperature Mpa

耐火度 Fire resistance ℃

荷重软化温度 Softening Temperature at load ℃

重烧线变化 Veriation of Re-burning line

一般制品 General product

50-60

—

≤22

40-54

1750-1790

1420-1520

(1500℃× 2h)
+0.1
- 0.4

高炉用高铝砖 High aluminium content Brick for biest furnace

48-65

≤1.8

17-19

45-59

1750-1790

1450-1500

(1500℃× 2h)
+0
-0.2

热风炉用高铝砖 High alumlnum Content brick for Hat-air furnace

50-65

≤23

40-49

1750-1790

1430-1500

(1500 ℃ × 2h) +0.1- 0.4

炼钢电炉顶用高铝砖 High alumlnlum content Brick for Electric furnece in Ateel-making

66-80

18-21

58.8-78.8

＞1790

1520-1550

(1500℃ ×2h)
+0.1
- 0.4

盛钢桶和高铝质衬砖 High aluminlum content Lining brick for Steel ladie

50-75

21-24

≥39.2

1750-1790

1450-1510

(1500 ℃ × 2h) +0.1- 0.4

盛钢桶内铸钢用高铝砖 High aluminium content Brick for Steel caasting

≥50

18-23

≥24.5

≥1750

1400-1450

(1450℃ ×2h)
+0.1
- 0.4

理化性能 Physical & chemical properties

高铝不烧电炉顶砖
Pressure at normal temperature

化学成份 Chemiacl composition

显气孔率 % Rate of gas hole indioting

≤15

体积密度 BD,g/cm³

≥3.0

常温耐压强度 Mpa Pressure at normal Temperature

一般电炉顶砖 For general electric furnace

≥80

耐火度℃ Fire-resistance

≥1790

0.2Mpa 荷重软化开始温度℃ Softening

≥1600

重烧线变化 % Variation of re-burning line（1550 ℃×3h）

-0.4

热震稳定性次数（1100℃水冷），次 Thermal shock resistance (1100℃ water quench),cycles

≥15