Iron & Steel Making

Towards Carbon-Free Steel: the Volteron™ Technology

Siderwin pilot plant

The iron and steel sector is responsible for roughly 8% of global CO emissions, making it one of the most carbon-intensive industrial activities John Cockerill Industry is leading the transformation toward carbon-free production through electrification and hydrogen integration in primary steelmaking.

At the heart of this transformation lies Volteron™, a breakthrough electrochemical process co-developed with ArcelorMittal.

Volteron™ enables carbon-free iron extraction through low-temperature iron electrowinning, replacing  conventional iron & steelmaking. This innovative process produces high-purity iron plates directly from iron ores using green and/or renewable electricity — completely eliminating the need for coal, natural gas, and hydrogen. It drastically reduces emissions and paves the way for truly carbon-free steel production.

 

Key facts about Volteron™:

  • World’s first low-temperature iron electrolysis plant
  • Industrial-scale capacity: 40,000–80,000 tonnes of iron plates annually by 2027, scalable to 1 million tonnes/year and more
  • CO-free production
  • High energy efficiency consumption
  • Joint IP ownership between ArcelorMittal and John Cockerill

Volteron™ complements our broader upstream technology portfolio, including:

Together, these advancements position John Cockerill Industry at the forefront of a new, electrified era in global steelmaking.

signature on iron plate between John Cockerill and ArcelorMittal

In 2023, ArcelorMittal and John Cockerill announced plans to develop world’s first industrial scale low temperature, iron electrolysis plant

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