Ladle nozzles, also known as ladle slide gate nozzles or ladle slide gates, are refractory components used in the steelmaking industry to control the flow of molten metal from the ladle to the tundish during continuous casting processes. They are an essential part of the ladle slide gate system, which regulates the steel flow and enables precise control of the casting process. Here's what you need to know about ladle nozzles:
Design and construction: Ladle nozzles are typically made from high-quality refractory materials, such as alumina, magnesia, zirconia, or a combination of these materials, depending on the specific application requirements. They are designed as nozzle-shaped structures with a small opening at one end and a control mechanism at the other end.
Function: The primary function of a ladle nozzle is to control the flow of molten metal from the ladle into the tundish during continuous casting. It acts as a movable gate that can be opened or closed to regulate the steel flow rate and ensure a steady and controlled casting process.
Flow control mechanism: Ladle nozzles are equipped with a control mechanism, such as a slide gate system, that allows for precise adjustment of the nozzle opening. This mechanism enables operators to control the steel flow according to the casting requirements, ensuring consistent quality and dimensional accuracy of the cast products.
Refractory properties: Ladle nozzles are designed to withstand the high temperatures and thermal cycling encountered in the steelmaking process. They exhibit excellent refractory properties, including high-temperature resistance, thermal shock resistance, and resistance to erosion from the flowing molten metal.
Wear resistance: Ladle nozzles are subject to wear and erosion due to the continuous flow of molten metal. They are engineered to have good wear resistance, extending their service life and reducing the need for frequent replacements.
Gas tightness: Ladle nozzles should provide a gas-tight seal to prevent the ingress of air or gases into the steel stream during casting. This ensures the quality and cleanliness of the final steel product.
Installation and maintenance: Ladle nozzles are installed and maintained by skilled operators. Proper installation, alignment, and periodic inspections are essential to ensure the effective functioning of the nozzle and prevent issues such as leakage or excessive wear.
Size and customization: Ladle nozzles are available in various sizes to accommodate different ladle designs and casting requirements. They can also be customized to meet specific needs, such as flow capacity, refractory material composition, or control mechanism preferences.
Ladle nozzles play a critical role in the continuous casting process, enabling precise control of the steel flow from the ladle to the tundish. Their high-temperature resistance, wear resistance, and gas tightness contribute to the efficiency, quality, and reliability of steel production.
Buy good quality low cost Ladle Nozzles made of tabular alumina, white fused alumina, sintered spinel, flake graphite, antioxidants and phenolic resin to be produced. They have the advantages of thermal shock resistance stability, good oxidation resistance and corrosion resistance, suitable for all kinds of ladle.
| ITEM | MGM-LN65 | MGM-LN75 | MGM-LN85 |
| Al2O3% ≥ | 65 | 73 | 83 |
| C%≥ | 2 | 3 | 3 |
| A.P.% ≤ | 14 | 12 | 10 |
| B.D g/cm³ | 2.75 | 2.8 | 2.85 |