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  • How It Works

    Inside a blast furnace

    Jan 21, 2021 2 minutes

    How do the large buildings we see around the modern world stay up? They have skeletons of steel that are strong enough to help support other heavy materials like concrete. That’s why steel is one of the world’s most important products – and so the blast furnaces that make it are very important too. Blast furnaces make very hot, liquid pig iron. In 2016 up to

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