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The Ladle Refining Furnace (LF Furnace) by LIWEI is an advanced metallurgical system designed for secondary steel refining after primary melting in electric arc furnaces or converters. Suitable for producing high-purity steels, alloy steels, and special steel grades, this furnace enables precise temperature control, chemical composition adjustment, deep desulfurization, and effective degassing. Our LF furnaces are available in capacities ranging from 5 to 120 tons, and are widely used in modern continuous casting and rolling production lines. With more than 30 years of experience in steel refining technology, LIWEI delivers integrated, cost-effective LF solutions tailored for vehicle-grade, construction-grade, and specialty steel applications.
The LF furnace performs heating, alloying, desulfurization, and argon stirring in one integrated process. Electric arc heating ensures precise temperature management, while additive feeding systems allow for micro-alloying and desulfurization. Argon bubbling promotes inclusions floatation, composition uniformity, and reduces hydrogen and nitrogen content in the molten steel.
Equipped with industrial computer control, the system enables real-time monitoring of molten steel temperature, argon flow, and electrode operation. Wire feeding devices, automatic slagging, and atmosphere control help optimize refining results, shorten production time, and ensure smooth casting startup.
LIWEI’s LF furnace can be integrated with VD (Vacuum Degassing) and VOD (Vacuum Oxygen Decarburization) systems for advanced steelmaking processes. LF+VD setups are ideal for low-carbon, high-purity steels, while LF+VOD is critical for stainless steel refining with ultra-low carbon content and minimal chromium loss.
| Parameter | Value |
|---|---|
| Available Capacities | 5t to 120t |
| Heating Method | Electric Arc via Graphite Electrodes |
| Stirring System | Bottom Argon Blowing + Flow Control |
| Feeding Systems | Alloy Addition + Cored Wire Injection |
| Control System | Industrial Computer + HMI Monitoring |
| Compatible Processes | VD, VOD, Continuous Casting Integration |
LF refining ensures removal of hydrogen, nitrogen, sulfur, and non-metallic inclusions. It allows for tight control of steel chemistry through precise alloying and deep deoxidation, delivering superior mechanical properties and surface finish.
The LF furnace provides efficient thermal retention and chemical control, significantly reducing casting defects and reheating losses. Its modular design supports flexible capacity upgrades and integration with vacuum refining routes for enhanced product value.
From automotive-grade steels to low-nitrogen stainless steels, LIWEI’s LF systems are operating globally in over 300 metallurgical plants. Our technology helps clients meet stringent industry standards while optimizing production efficiency.
A: It’s used for molten steel heating, alloy composition adjustment, desulfurization, and impurity removal after primary melting.
A: Yes. Our LF furnace is designed to integrate with VD for degassing and with VOD for decarburization in stainless steel refining.
A: We offer ladle refining furnaces ranging from 5 to 120 tons, customizable for different plant needs.
The Ladle Refining Furnace (LF Furnace) by LIWEI is an advanced metallurgical system designed for secondary steel refining after primary melting in electric arc furnaces or converters. Suitable for producing high-purity steels, alloy steels, and special steel grades, this furnace enables precise temperature control, chemical composition adjustment, deep desulfurization, and effective degassing. Our LF furnaces are available in capacities ranging from 5 to 120 tons, and are widely used in modern continuous casting and rolling production lines. With more than 30 years of experience in steel refining technology, LIWEI delivers integrated, cost-effective LF solutions tailored for vehicle-grade, construction-grade, and specialty steel applications.
The LF furnace performs heating, alloying, desulfurization, and argon stirring in one integrated process. Electric arc heating ensures precise temperature management, while additive feeding systems allow for micro-alloying and desulfurization. Argon bubbling promotes inclusions floatation, composition uniformity, and reduces hydrogen and nitrogen content in the molten steel.
Equipped with industrial computer control, the system enables real-time monitoring of molten steel temperature, argon flow, and electrode operation. Wire feeding devices, automatic slagging, and atmosphere control help optimize refining results, shorten production time, and ensure smooth casting startup.
LIWEI’s LF furnace can be integrated with VD (Vacuum Degassing) and VOD (Vacuum Oxygen Decarburization) systems for advanced steelmaking processes. LF+VD setups are ideal for low-carbon, high-purity steels, while LF+VOD is critical for stainless steel refining with ultra-low carbon content and minimal chromium loss.
| Parameter | Value |
|---|---|
| Available Capacities | 5t to 120t |
| Heating Method | Electric Arc via Graphite Electrodes |
| Stirring System | Bottom Argon Blowing + Flow Control |
| Feeding Systems | Alloy Addition + Cored Wire Injection |
| Control System | Industrial Computer + HMI Monitoring |
| Compatible Processes | VD, VOD, Continuous Casting Integration |
LF refining ensures removal of hydrogen, nitrogen, sulfur, and non-metallic inclusions. It allows for tight control of steel chemistry through precise alloying and deep deoxidation, delivering superior mechanical properties and surface finish.
The LF furnace provides efficient thermal retention and chemical control, significantly reducing casting defects and reheating losses. Its modular design supports flexible capacity upgrades and integration with vacuum refining routes for enhanced product value.
From automotive-grade steels to low-nitrogen stainless steels, LIWEI’s LF systems are operating globally in over 300 metallurgical plants. Our technology helps clients meet stringent industry standards while optimizing production efficiency.
A: It’s used for molten steel heating, alloy composition adjustment, desulfurization, and impurity removal after primary melting.
A: Yes. Our LF furnace is designed to integrate with VD for degassing and with VOD for decarburization in stainless steel refining.
A: We offer ladle refining furnaces ranging from 5 to 120 tons, customizable for different plant needs.
