Round Zirconia Tundish Nozzle
Main features
Consisternt casting speed
Extend casting time
Able to adapt to large thermal stress
Products Description
The round zirconia tundish nozzle is a key functional refractory material used in the steelmaking and continuous casting process, controlling the flow and direction of molten steel within the tundish. The zirconia tundish nozzle is a composite structure. The inner layer is made of zirconia, leveraging its excellent high-temperature resistance, corrosion resistance, and thermal shock stability to withstand the high temperatures and impacts of the molten steel. The outer layer is typically made of aluminum-carbon or other refractory materials to enhance the nozzle's overall strength and thermal shock resistance.
Anyang Changtai Silicon Industry Co., Ltd. is a company specializing in the design, processing, and sales of high-temperature zirconia products. If you would like to purchase high-temperature zirconia products, please contact us. We will respond as soon as possible after receiving your message.
Product Data
|
CT-PMD1 |
CT-PMD2 |
CT-PMD3 |
|
|
Apparent Porosity (%) |
11-12 |
8-10 |
6-8 |
|
Bulk Density (g/cm3) |
≥4.9 |
≥5.2 |
≥5.3 |
|
ZrO + HfO |
≥94.0 |
≥95.5 |
≥96.0 |
|
SiO |
1.1 |
0.23 |
0.5 |
|
TiO2 |
0.2 |
0.2 |
0.1 |
|
Fe2O3 |
0.5 |
0.05 |
0.05 |
|
Al2O3 |
0.4 |
0.42 |
0.1 |
|
CaO |
0.2 |
0.15 |
0.15 |
|
MgO |
2.5 |
2.4 |
2.4 |
|
Na2O |
0.03 |
0.01 |
0.01 |
Our Products
Product Features
Ultra-High Temperature and Thermal Shock Resistance
Zirconia material has a refractory temperature above 2700°C, far exceeding molten steel casting temperatures. With a low thermal expansion coefficient, it can withstand rapid heating and cooling without cracking due to thermal shock, preventing nozzle explosion during casting.
Strong Erosion and Scour Resistance
Zirconia shows excellent chemical stability against molten steel and slag, with minimal reaction to components such as Al₂O₃ and CaO. Its dense and hard texture resists long-term erosion from high-speed molten steel flow, significantly extending service life.
Stable Flow Control
The smooth inner wall of the zirconia nozzle, along with its uniform and minimal bore expansion during use, ensures a stable molten steel flow rate over time. This stability prevents mold level fluctuations caused by inconsistent flow.
Adaptability for Multi-Heat Continuous Casting
While conventional alumina-carbon nozzles typically last for 3–5 heats, zirconia nozzles can achieve 8–15 heats thanks to their superior wear resistance. This reduces nozzle replacement frequency and improves the efficiency of continuous casting operations.
Why Choose Us?
Changtai's main products include zirconia nozzles, tundish nozzles, zirconia slides, and other refractory and thermal insulation materials. These products are primarily used in industries such as continuous steel casting and powder metallurgy casting. Our product performance meets the highest quality standards as specified by ISO9001, ISO14001, and SGS guidelines, ensuring you can purchase with confidence. Our products can also be customized. Let us know your requirements, and our professional team will provide customized products and services. We have established partnerships with several leading companies in the refractory industry. We will continue to provide the highest quality products and services to all our customers. We look forward to working with you!
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