Science & technology | Greening steel

A new way to clean up the steel industry

Carbon dioxide emissions could be cut by more than 90%

FWC3GG Team member taking iron samples using a lance on Blast Furnace No 5 at Port Talbot Steelworks South Wales UK
Image: Alamy

Making steel is a dirty business. For every tonne of it some 1.8 tonnes of carbon dioxide (CO2) are emitted into the atmosphere. As a result, steelmaking accounts for 7-9% of the world’s anthropogenic greenhouse-gas emissions.

This article appeared in the Science & technology section of the print edition under the headline “Crystal maze”

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