Refined Intermediate Ladle

This high-efficiency refined intermediate ladle is a core equipment for secondary refining and stable casting of molten steel in continuous casting production.  Jointly developed by Yuexin Machinery and the Central Iron and Steel Research Institute, it adopts an integrated design of "partitioned flow control + inert gas stirring + online heating," which can achieve homogenization of molten steel composition, inclusion removal, and temperature control at 1500-1580℃. Its molten steel purification efficiency reaches over 85%, and compared with traditional tundishes, the qualified rate of continuous casting billets is increased by 12%, making it a key upgrading equipment for modern steel enterprises' continuous casting production lines.

Product Parameter (Specification)

Product Feature

Efficient Purification and Flow Control: The Refined Intermediate Ladle features a composite flow control system with a "slag baffle-flow guide dam-turbulence suppressor," extending the molten steel residence time to 8-12 minutes; coupled with inert gas stirring through bottom porous bricks, it promotes the collision and flotation of inclusions, achieving an inclusion removal rate of over 85% for inclusions ≥5μm, significantly improving molten steel cleanliness.

Uniform Temperature and Composition: Equipped with arc or induction heating devices, it can precisely control the molten steel temperature, with temperature fluctuations controlled within ±3℃; through optimized flow field design, the molten steel composition uniformity error is ≤0.02%, effectively avoiding segregation defects in continuous casting billets.

Durable Refractory Lining: The working layer of the Refined Intermediate Ladle uses magnesia-alumina spinel castable or corundum refractory bricks, improving corrosion resistance and thermal shock resistance by 50%; a segmented lining design is adopted, with special wear-resistant materials used in vulnerable areas, extending the overall service life by 40% and reducing the frequency of ladle changes.

Intelligent and Reliable Monitoring: Equipped with online molten steel temperature monitoring, automatic liquid level control, and gas flow rate adjustment system; equipped with lining erosion monitoring and alarm device, providing real-time feedback on equipment status, and supporting linkage with the continuous caster PLC system to achieve automated casting control.

Application

The Refined Intermediate Ladle is widely used in steel continuous casting production lines, compatible with various continuous casting machines such as small square billets, large square billets, slabs, and round billets. It undertakes the tasks of buffering, refining, and distributing molten steel from the converter/electric furnace to the crystallizer. Specifically, it is applied in the production of high-quality steel (automotive steel, pipeline steel), special steel smelting (bearing steel, spring steel), and thin slab continuous casting. It is particularly suitable for the production of high-end steel materials with stringent requirements for molten steel cleanliness and compositional uniformity, providing core assurance for improving the quality of continuous casting billets.