mullite insulating brick and insulation brick for blast furnace

 Item

NG-1.3

NG-1.2

NG-1.1

NG-1.0-

NG-0.8

NG-0.6

NG-0.4

Bulk density  /        (g/cm³⁾

1.3

1.2

1.1

1.0

0.8

0.6

0.4

Cold crushing strength /    Mpa

5.0

4.5

4.0

3.5

3.0

2.0

1.0

Permanent linear change temp. less than 2%,.C

1350

1350

1350

1350

1250

1200

1150

Thermal conductivity /

W/m.k 350.C+25

0.22

0.5

0.45

0.44

0.35

0.25

0.2

Item

Brand

Unit

GM23

GM26

GM28

Spec.

Range

Spec.

Range

Spec.

Range

Classfied temperature

°C

1260

---

1430

---

1540

---

Bulk Density

g/cm3

0.55

±0.03

0.78

±0.03

0.88

±0.03

C.C.S

MPa

1.2

±0.3

1.6

±0.3

2.1

±0.3

R.L.C

%

1230°C

-0.50

  ---

1400°C

-0.50

  ---

1510°C

0.53

  ---

Thermal conductivity

w/m.k

400°C

0.14

±0.01

0.27

±0.01

0.32

±0.01

600°C

0.16

±0.01

0.29

±0.01

0.34

±0.01

800°C

0.18

±0.01

0.31

±0.01

0.36

±0.01

1000°C

0.20

±0.01

0.33

±0.01

0.38

±0.01

M.O.R

MPa

0.9

±0.15

1.5

±0.15

1.7

±0.15

Chemical Analysis

%

Al2O3

37

58

66

SiO2

---

---

Fe2O3

≤1.0

≤1.0

≤1.0

TiO2

---

---

---

Tolerance

>250mm ±1.0mm         <250mm ±0.5mm

      Corner edge damage:a+b+c<30mm