High Alumina Bricks

Features:Generally,the soften temperature under load of the brick with compact organization and large compression strength is above 1300~1400℃,also better than clay refractory in compression strength.

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Features:Generally,the soften temperature under load of the brick with compact organization and large compression strength is above 1300~1400℃,also better than clay refractory in compression strength.
Application:Widely used in small,medium and large blast furnace, hot stove.

High Alumina brick for hot stove:

Item Parameter
RL-75 RL-65 RL-55 RL-48
Al2O3

≥75

≥65

≥55

≥48

Refractoriness ℃

≥1790

≥1790

≥1760

≥1740

RUL(Refractory under Load)

≥1520

≥1500

≥1470

≥1420

Reheating Liner Change Rate 1500℃x2h

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

 

1450℃x2h

 

 

 

+0.1~-0.4

Apparent porosity%

≤24

≤24

≤24

≤24

Cold crushing strength Mpa

≥55

≥49.0

≥44.1

≥39.2

High Alumina brick For blast furnace:

Item Parameter
GL-75 GL-65 GL-55 GL-48
Al2O3

≥75

≥65

≥55

≥48

Fe2o3

≤2.0

≤2.0

≤2.0

≤2.0

Refractoriness ℃

≥1790

≥1790

≥1770

≥1750

RUL(Refractory under Load)

≥1520

≥1500

≥1480

≥1450

Reheating Liner Change Rate 1500℃x2h 0~-0.2 0~-0.2 0~-0.2

 

1450℃x2h

 

 

 

0~-0.2
Apparent porosity%

≤19

≤19

≤19

≤18

Cold crushing strength Mpa

≥60

≥58.5

≥55

≥49.0

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