Fin-Type Anode for Direct Current Electric Arc Furnaces (DC-EAF)

The Fin-Type Anode for Direct Current Electric Arc Furnaces (DC-EAF) is designed to address significant challenges faced by steel experts, including issues with water cooling, anode lifetime, and current limitations. Primetals Technologies has leveraged its extensive experience with patented DC-EAF fin-type anodes, even in regions with weak and unstable power grids, to confirm the advantages of this innovative solution over traditional pin-type anodes.

The fin-type anode for direct current electric arc furnaces (DC-EAF) is designed with an optimal thickness-to-surface ratio of fin-sheets embedded within the anode, ensuring superior heat transfer. This innovative design eliminates the need for bottom water cooling, enhancing both furnace safety and availability. The unique configuration of the anode allows for smooth and uniform electric current transfer through the melt, fins, steel plates, and high-current transition elements.

With a lifespan exceeding 1,500 heats, and in some instances over 2,000 heats, fin-type anodes significantly reduce arc deflection and increase availability due to their quick and easy exchange. This efficiency boosts productivity compared to other anode types. Additionally, systems with two electrodes in ultra-high power DC-EAF can achieve higher power input, particularly for 100% direct reduced iron (DRI) melting, with currents reaching up to 160 kA.

Benefits of the Fin-Type Anode for DC-EAF

• Anode lifetime exceeding 1500 heats
• Reduced arc deflection
• Higher availability thanks to fast and easy anode exchange
• Increased productivity with higher power input
• Improved safety with no water under the electric arc furnace (EAF)
• Extended electric arc furnace service and bottom anode life
• Lower consumption figures