The Energiron hydrogen-based direct reduction (in short words DRI: Direct Reduced Iron) is a proven and practical technology, that can be used in the steel industry to reduce CO₂ emissions to almost zero. The pellet-shaped iron ores are introduced in a shaft furnace, where a stream of hydrogen-rich gas at proper conditions reduces the iron oxide to metallic iron in solid state. Since the direct reduction process takes place at lower temperatures than in the blast furnace, the material remains in solid state (sponge iron is produced, called “DRI”) and the process requires less energy. DRI is a virgin source of pure iron, which is then further processed, for example, in an electric arc furnace or melting furnace, where steel is finally refined. Using hydrogen allows to achieve the carbon neutrality, since no or only very little CO₂ is emitted during the ironmaking process.