Daiwa Argon Stirring Lance

What We Can Offer?
Efficient and Controlled Argon Stirring Lance

Daiwa Argon Stirring Lance (also known as an argon lance or ladle stirring lance) is a consumable lance used in secondary metallurgy to inject argon gas into molten steel during ladle refining processes such as the Ladle Furnace (LF/LRF), VAD, and VOD. Through controlled argon stirring, it promotes heat transfer and mass transfer, helping homogenize steel temperature and chemical composition, improve alloy distribution, accelerate steel–slag reactions, support desulfurization, and promote the flotation and removal of non-metallic inclusions.

Daiwa Argon Lance is widely used in steel mills and secondary steelmaking operations for molten steel refining, ladle stirring, degassing, and steel cleanliness control. It can also be used as an emergency argon stirring lance when the bottom stirring system, porous plug, or tuyere is blocked or temporarily unavailable, helping maintain effective refining and stable steel quality before continuous casting.

* Note : The consumption rate of Daiwa Argon Lance varies widely depending on the conditions in which the lance is used.

Technical Specifications
Practical Applications
Advantages
Related Blog Articles
Download

Technical Specifications

Structure & Outlet Design

Durable Refractory-Coated Structure

Daiwa Argon Stirring Lance features a durable steel pipe core protected by a thick refractory coating. Reinforced with V-shaped steel anchors, the refractory layer provides strong bonding and stability during high-temperature operation. The structure is designed to withstand temperatures of up to approximately 1,800°C, ensuring reliable argon injection into molten steel during secondary steelmaking and ladle refining processes.

Size

Daiwa Argon Stirring Lance is available in various sizes to suit different ladle refining and secondary steelmaking requirements. The steel pipe core is available with an outer diameter of 48.6–60.5 mm, a wall thickness of 3.6–14.2 mm, and a length of 4,000–6,000 mm. Custom specifications may also be available to meet specific operating conditions and customer requirements.

Practical Applications

Argon stirring of molten steel during secondary refining in Ladle Furnace (LF/LRF) operations.
Supporting temperature and chemical composition homogenization through improved heat transfer and mass transfer in molten steel.
Promoting alloy distribution and steel–slag reactions during ladle refining.
Supporting degassing and the removal of non-metallic inclusions to improve molten steel cleanliness.
Supporting desulfurization and other refining reactions under controlled argon stirring conditions.
Providing emergency or supplementary argon stirring when the bottom stirring system, porous plug, or tuyere is blocked or temporarily unavailable.
Supporting secondary steelmaking processes such as VAD and VOD that require controlled argon injection and molten steel stirring.

Advantages

Effective Steel Homogenization

Controlled argon stirring promotes efficient heat and mass transfer, helping achieve more uniform molten steel temperature and chemical composition during secondary refining.

Improved Steel Cleanliness

Argon injection supports the flotation and removal of non-metallic inclusions while promoting effective steel–slag reactions, contributing to cleaner and higher-quality steel.

Reliable Emergency Stirring

The lance can provide emergency or supplementary argon stirring when bottom stirring systems, porous plugs, or tuyeres are blocked or temporarily unavailable.

FAQ

What is an Argon Stirring Lance?

An Argon Stirring Lance is a consumable lance used in secondary metallurgy to inject argon gas into molten steel during ladle refining. It helps promote heat and mass transfer, homogenize steel temperature and chemical composition, and improve the overall refining process.

Where is Daiwa Argon Lance used?

Daiwa Argon Lance is used in secondary steelmaking processes such as Ladle Furnace (LF/LRF), Vacuum Arc Degassing (VAD), and Vacuum Oxygen Degassing (VOD). It is suitable for molten steel refining, ladle stirring, degassing, and steel cleanliness control.

What are the benefits of argon stirring in molten steel?

Controlled argon stirring improves the mixing of molten steel, promotes uniform temperature and chemical composition, and supports alloy distribution. It can also accelerate steel–slag reactions, support desulfurization, and promote the flotation and removal of non-metallic inclusions.

Can Daiwa Argon Lance be used if the bottom stirring system is unavailable?

Yes. Daiwa Argon Lance can be used as an emergency argon stirring lance when a bottom stirring system, porous plug, or tuyere is blocked or temporarily unavailable. It can help maintain effective refining and stable steel quality before continuous casting.

How long does a Daiwa Argon Lance last?

The consumption rate of Daiwa Argon Lance varies depending on the operating conditions and how the lance is used. Actual consumption can differ significantly between applications, so the appropriate lance specification and operating conditions should be considered for each steelmaking process.