EAF Quantum from Primetals sets global performance benchmark

Chinese steelmaker Hubei Shunle has set a new global record for electric arc furnace (EAF) productivity with its two EAF Quantum units supplied by Primetals Technologies. The furnaces, in operation at the company’s site in Hubei Province, are now achieving up to 50 heats per day — a new industry benchmark in electric steelmaking.

Record Output and Efficiency

According to Primetals Technologies, the two EAF Quantum furnaces consistently reach tap-to-tap times below 28 minutes. For output levels of 48 to 50 heats per day, power-on times average 25 minutes, with power-off intervals of just 3 minutes. Energy efficiency remains high, with power consumption below 312 kilowatt-hours per ton and oxygen usage under 24 cubic meters per ton.

These figures represent substantial cost and energy savings for Hubei Shunle, which produces around two million tons of high-strength seismic rebar annually.

Key Technologies: Scrap Preheating and FAST Tapping

Central to the EAF Quantum's performance are its integrated technological innovations. Scrap preheating, based on off-gas heat recovery, reduces energy demand during the melting phase while shortening power-on times. The Furnace Advanced Slag-free Tapping (FAST) system allows for continuous tapping under power, further reducing tap-to-tap intervals.

Together, these features contribute to lower operating costs and a reduced carbon footprint. Primetals Technologies holds several patents on core elements of the EAF Quantum, including its shaft furnace design and automated sand-filling for the tap hole.

Scope of Delivery and Digital Integration

The EAF Quantum project at Hubei Shunle began with a 2018 order for two EAF Quantum units and two twin ladle furnaces. Primetals Technologies supplied the mechanical and electrical systems, Level 1 and Level 2 automation, automated scrap yard management, charging systems, and equipment for oxygen injection and sand refilling.

The site currently forms part of a broader digitalisation and decarbonisation strategy. Hubei Shunle and Primetals Technologies continue to collaborate on smart manufacturing solutions and the development of low-carbon “green steel” technologies.

Source and Photo: Primetals