Tundish Refractories

Zirconia tundish nozzle

Tundish nozzle has high strength, good corrosion resistance and thermal shock resistance. Shroud may be used directly without pre-heating due to its excellent thermal shock resistance, and it is warml

Tundish nozzle has high strength, good corrosion resistance and thermal shock resistance. Shroud may be used directly without pre-heating due to its excellent thermal shock resistance, and it is warmly welcomed by the customers.


Physical Properties

Zirconia Inserts

Tundish Nozzle Outside

Apparent Porosity (%)

11-12

8-10

6-8

20

18

16

Bulk Density (g/cm3)

≥4.9

≥5.2

≥5.3

2.6

2.8

3.0

Chemical Analysis (%)


ZrO2 + HfO2

≥94.0

≥95.5

≥96

/

/

/

SiO2

1.1

0.23

0.5

20

13

8

Fe2O3

0.5

0.05

0.05

2.5

2.0

0.58

Al2O3

0.4

0.42

0.1

≥75

≥85

≥90

CaO

0.2

0.15

0.15

0.2

0.1

0.20

MgO

2.5

2.4

2.4

0.2

0.1

0.06


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