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current location:Henan Zili refractory Co., Ltd > PRODUCT > Refractories for Ironmaking > Series of refractories for hot blast stove > 正文

Low creep brick for hot blast stove

Product Name:Low creep brick for hot blast stove
National sales hotline:139-0382-5488

Product introduction

The hot blast stove is made of low creep brick, high alumina, kyanite, andalusite and sillimanite. In the firing process of high alumina brick, the mullite crystal phase with stable structure is formed after two mullite crystal changes, which makes the high alumina brick have very good creep resistance. Application effect of low creep high alumina brick in the middle temperature zone of hot blast furnace:

In the middle temperature area of the hot blast stove, the scheme of low creep and high aluminum brick masonry has been well developed. It has good high temperature performance, can adapt to the changes of its working environment, and can be used for a long time, can maintain the stable performance of the brick, and effectively extend the service cycle of the hot blast stove.

Technical parameter

Project Indicators

DRL-155

DRL-150

DRL-145

DRL-140

DRL-135

DRL-130

DRL-127

DRL-125

DRN-120

DRN-115

AL2O3 %

≥ 75

≥ 75

≥ 65

≥ 65

≥ 65

≥ 60

≥ 50

≥ 42

≥ 40

≥ 40

Fe2O3 %

≤ 1.5

≤ 1.5

≤ 1.5

≤ 1.5

≤ 2.0

≤ 2.0

≤ 2.0

≤ 2.0

≤ 2.5

≤ 2.5

bulk density ,g/cm 3

≥ 2.65

≥ 2.65

≥ 2.50

≥ 2.40

≥ 2.35

≥ 2.30

≥ 2.30

≥2.25

≥ 2.20

≥ 2.15

Apparent porosity %

≤ 20

≤ 21

≤ 21

≤ 22

≤ 22

≤ 22

≤ 23

≤ 23

≤ 24

≤ 24

Normal temperature compressive strength , MPa

≥ 60

≥ 60

≥ 60

≥ 55

≥ 55

≥ 55

≥ 50

≥ 40

≥ 40

≥ 35

Change rate of reheating line ( % )

1550 ℃ × 2h

0.1 ~ 0.2

1550 ℃ × 2h

0.1 ~ 0.2

1550 ℃ × 2h

0.1 ~ 0.2

1450 ℃ × 2h

0.1 ~ 0.2

1450 ℃ × 2h

0.1 ~ 0.4

1450 ℃ × 2h

0.1 ~ 0.4

1450 ℃ × 2h

0.1 ~ 0.4

1400 ℃ × 2h

± 0.2

1350 ℃ × 2h

± 0.2

1300 ℃ × 2h

± 0.2

Creep rate (0.2MPa),%

1550 ℃ × 50h ≤ 0.8

1500 ℃ × 50h ≤ 0.8

1450 ℃ × 50h ≤ 0.8

1400 ℃ × 50h ≤ 0.8

1350 ℃ × 50h ≤ 0.8

1300 ℃ × 50h ≤ 0.8

1270 ℃ × 50h ≤ 0.8

1250 ℃ × 50h ≤ 0.8

1200 ℃ × 50h ≤ 0.8

1150 ℃ × 50h ≤ 0.8

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Henan Zili refractory Co., Ltd

Address: Chuangye Avenue, refractories Industrial Park, Gongyi City, Henan Province

Mobile: +8613903825488

Contact:+86-371-64122052

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