Original
By certification 
The utility model relates to a 125 square Zirconia Tundish nozzle, which is a tundish nozzle with an outline size of 125 mm. The product is a composite Refractory with an outer layer of alumina Refractory and an inner layer of zirconia Refractory. The nozzle of 125 Square Zirconia tundish can be divided into two types, one is non-fired type and the other is fired type. They have the same service life, but they are not quite the same, depending on the steelmaking environment.
Zirconia Inserts Tundish Nozzle Outside |
||||||
CT-PMD1 |
CT-PMD2 |
CT-PMD3 |
CTAL75 |
CTAL85 |
CTAL95 |
|
Physical Properties |
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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 (%) |
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ZrO2 + HfO2 |
≥94.0 |
≥95.5 |
≥96 |
/ |
/ / |
|
SiO2 |
1.1 |
0.23 |
0.5 |
20 |
13 |
8 |
TiO2 |
0.2 |
0.2 |
0.1 |
3 |
2.1 |
0.3 |
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 |
Na2O |
0.03 |
0.01 |
0.01 |
0.6 |
0.5 |
0.3 |
http://www.ctzirconia.com/
