高炉热风炉用组合砖

牌号
Brand

DT-HD

DT-HL

DT-LL

DT-LLG

DT-JL

DT-HN

DT-LN

DT-VN

产品名称
Name of product

低蠕变高铝砖
Low creep high alumina brick

复合莫来石砖
Combined mullite brick

堇青石砖
Cordierite brick

低蠕变粘土砖
Low creep clay brick

致密粘土砖
High dense clay brick

化学成分(%)
Chemical Composition

Al2O3

80±5

75±5

65±5

65±5

55±5

42±5

40±5

42±5

MgO

≤2.0

Fe2O3

≤1.5

≤1.5

≤1.5

≤1.0

≤1.5

≤1.5

≤2.0

≤1.5

显气孔率(%)
Apparent Porosity

≤21

≤20

≤21

≤20

≤25

≤22

≤24

≤16

体积密度(g/cm3)
Bulk Density

≥2.7

≥2.7

≥2.6

≥2.6

≥2.3

≥2.2

≥2.1

≥2.3

常温耐压强度(MPa)
Cold crushing Strength

≥55

≥60

≥55

≥70

≥40

≥40

≥30

≥45

耐火度(℃)
Refractoriness

≥1850

≥1790

≥1790

≥1790

≥1750

≥1730

≥1750

荷重软化温度T2(℃)
Refractoriness Under Load

1600

1600

1600

1600

1400

1400

1350

1400

蠕变率0.2MPa(50h)(%)
Creep

1500℃ ≤0.8

1400℃ ≤0.6

1300℃ ≤0.8

1200℃ ≤1.0

1100℃ ≤1.0

热震稳定性(次)
1100℃-水冷Cold Water
Thermal shock Resistance

≥6

≥6

≥20

≥25

≥25

≥20

≥20

≥20

重烧线变化率(%)
Permanent linear change

1500℃ ±0.1

1500℃ ±0.1

1450℃ ±0.2

1450℃0-0.4

1450℃0-0.3

1450℃0-0.4