Hydrogen Direct Reduction of Iron — H2-DRI Shaft Furnace

This simulator renders a real shaft furnace as used in H2-DRI ironmaking: hematite pellets enter at the top, sink through a counter-current stream of hot hydrogen gas, and leave the bottom as metallic sponge iron. Each pellet's reduction fraction is tracked with an Arrhenius-scaled first-order kinetic model driven by furnace temperature and hydrogen purity, and its colour interpolates live from rust-brown oxide to pale metallic iron as it converts. Tune temperature, H₂ purity and feed rate to see how they trade off against the metallization degree of the iron leaving the furnace, and compare the process's CO₂ footprint against the traditional coke blast furnace it is designed to replace.