A project is underway in northern Sweden which will drastically cut CO2 emissions in making steel.
BBC News, Stockholm
At 09:00, the sun has only just risen and the temperature is -8C. Some of the workers are wearing three or four jackets, and have switched on the heated seats in their vehicles. Although the first buildings have yet to go up on the remote site, the company behind the project, H2 Green Steel, believes it's on course to roll out the first commercial batches of its steel by 2025.If it succeeds, it will be the first large-scale green steel plant in Europe, with its products used in the same way as traditional steel made in blast furnaces, to construct everything from cars and cargo ships to buildings and bridges.
The centrepiece of the new steel plant will be a tall structure called a DRI tower . Inside this, hydrogen will react with iron ore to create a type of iron that can be used to make steel. Unlike coking coal, which results in carbon emissions, the by-product of the reaction in the DRI tower is water vapour.Water from a nearby river is passed through an electrolyser - a process which splits off the hydrogen from water molecules.
H2Green Steel has already signed a deal with Spanish energy company Iberdrola to build a green steel plant powered by solar energy in the Iberian peninsula, and says it's exploring other opportunities in Brazil.
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