In view of climate change and the urgent need to cut greenhouse gases such as CO2, steel is subject to critical debate since its production is often very emissions-intensive. However, alternative production processes and other advantageous properties of steel reinforce our firm conviction:
Due to its durability and low maintenance frequency, steel is one of the most preferred materials. Compared to other materials such as concrete or timber, however, there is another major advantage that will become even more important in the future: steel can be recycled an infinite number of times without any loss of quality.
When people think of the production of steel, they usually have images of blast furnaces in mind. In this energy-intensive process route, pig iron is produced in the blast furnace, which is then processed into crude steel by adding oxygen. An alternative is the production with the electric arc furnace. In this method, recycled steel scrap or sponge iron produced from iron ore is melted into crude steel.
Compared to the conventional blast furnace route, it produces up to 80% fewer carbon emissions. However, as emissions are still caused by this process, there is a growing desire for even more carbon-reduced steel to be produced through the use of renewable energies and green hydrogen.
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