Upper Nozzles

Upper Nozzles are critical refractory flow-control components installed in the bottom section of steel ladles above the slide gate plate assembly. They serve as the primary passage through which molten steel flows from the ladle into the slide gate system, playing a vital role in maintaining controlled steel transfer during secondary metallurgy and continuous casting operations.

Operating under direct contact with molten steel at temperatures exceeding 1600°C, Upper Nozzles must withstand severe thermal shock, steel erosion, slag attack, oxidation, and mechanical stress. Manufactured from advanced refractory materials such as Alumina-Carbon (Al₂O₃-C), Alumina-Zirconia-Carbon (AZC), and other specialized compositions, these nozzles provide excellent durability, dimensional stability, and flow-control performance throughout demanding casting sequences.

• Reliable molten steel flow into slide gate systems
• Excellent resistance to thermal shock and temperature cycling
• High resistance to steel erosion and slag corrosion
• Long service life in demanding steelmaking environments