I. Descripition of Ladle Refining Furnace (LRF)
The Ladle Refining Furnace (LRF) is a key secondary steelmaking equipment used to refine molten steel, positioned between primary steelmaking and continuous casting within the EAF–LF–VD/VOD–CCM production route. It enables precise control over the steels chemical composition, temperature, and impurity levels. The LRF operates by injecting gases like oxygen, argon, or nitrogen into the molten steel, which aids in removing impurities such as sulfur, carbon, and excess oxygen. Alloying elements can be added to adjust the steel’s composition for specific applications, including stainless steel and high-performance alloys.
Yeneng Ladle Refining Furnaces are widely applied for the production of:
Carbon steel and structural steel
Alloy steel and low-alloy steel
Bearing steel and spring steel
High-quality and clean steel grades requiring strict composition control
LF systems are suitable for steel plants demanding high consistency, low impurity levels, and stable casting conditions.
III. Parameters of Ladle Refining Furnace (LRF)
Electric Arc Reheating System
Graphite electrodes provide precise temperature control, compensating for heat losses during ladle transfer and ensuring stable superheat before casting.
Argon Stirring & Slag Refining
Bottom argon purging promotes bath homogenization, accelerates desulfurization, and supports inclusion flotation and removal.
Accurate Alloy Feeding
Alloy addition systems enable precise chemical adjustment, ensuring uniform composition throughout the molten steel.
Optimized Furnace Structure
The LF adopts a rigid frame structure with a water-cooled roof and side panels, ensuring long service life under repeated thermal cycles.
Process Automation & Monitoring
PLC-based automation allows real-time control of power input, stirring intensity, and temperature, improving refining efficiency and operational safety.
V. Main Components of Ladle Refining Furnace (LRF)
Ladle & Ladle Transfer Car
Heating Device
Electrode Control System
Hydraulic & Control Valve System
Gas & Cooling Systems
Electrical Control System
High-Voltage Power System
High-Current Circuit
Supply scope can be customized according to plant layout and refining requirements.
Precise temperature and composition control before casting
Improved steel cleanliness and inclusion control
Reduced rejection rate and casting interruptions
Lower refining load on downstream processes
Stable operation for a wide range of steel grades
VII. Advantages of Yeneng’s Ladle Refining Furnace (LRF)
Xi’an Yeneng Metallurgical Engineering Co., Ltd. designs and supplies Ladle Refining Furnaces based on a deep understanding of secondary metallurgy and plant operation. Our LF solutions are engineered to integrate seamlessly with EAF, VD/VOD, and CCM systems, ensuring smooth process flow and long-term reliability.
In addition to equipment supply, we provide EPC services, installation, commissioning, process optimization, spare parts supply, and technical upgrades, helping steel producers achieve consistent quality and efficient operations in the Middle East and Southeast Asia.
About Us
Xian Yeneng Metallurgical Engineering Co., Ltd is a leading provider of advanced steelmaking solutions based in Xian, China. We specialize in the design, R&D, manufacturing, and installation of furnaces and related equipment, as well as providing comprehensive overhaul services.
Our Core Products
One-Stop Solution: Furnace, Spare parts, maintenance, and equipment upgrade services
