High alumina bricks for blast furnaces and hot blast stoves

Detailed introduction

High alumina brick for blast furnace and hot blast stove is a kind of refractory. The main component of this refractory brick is Al2O3. Three aluminum silicate refractory products with two aluminum oxide (Al2O3) content higher than 48%.
A neutral refractory with an alumina content of more than 48%. It is formed and calcined from bauxite or other high alumina content raw materials. The thermal stability is high and the refractoriness is above 1770 C. It has good slag resistance, and it is used for lining steel smelting electric furnace, glass melting furnace, cement rotary furnace and so on.
High charge soft and low creep high alumina brick [1] is a high grade refractory made of super bauxite, fused corundum and fused mullite. The product has the advantages of low temperature creep, strong corrosion resistance and good thermal shock stability. It is suitable for large and medium-sized hot blast stoves. It opens up the next successful road for the localization of high-quality and high-grade imported refractories for new type hot blast stoves in China and has been listed in the national "Spark Plan" project.

 Main Properties


Index

Item

GL-65

GL-55

GL-48

GL-65

GL-55

GL-48

 application

blast furnace

hot-blast furnace

chemical composition,%

Al203

65

55

48

65

55

48

Fe203

2

2

2

---

---

---

 refractoriness,℃ ≥

1790

1770

1750

1790

1770

1750

 refractorinessunder
load (0.6%)≥,℃

1500

1480

1450

1500

1470

1420

 linear under load%

1500℃×2h

0~-0.2

0~-0.2

---

+0.1~-0.2

+0.1~-0.4

---

1450℃×2h

---

---

0~-0.2

---

---

+0.1~-0.4

App.porosity % ≤

19

19

18

24

24

24

C.C.SMPa ≥

58.8

49.0

49.0

49.0

44.1

39.2

 

高炉、热风炉用高铝砖

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