Hydrogen steelmaking. Part 1: Physical chemistry and process metallurgy

Pushed to the forefront by objective drastically reduce CO 2 emissions from steel industry, a new steelmaking route based on hydrogen and electricity is subject of great deal attention numerous R&D projects. The first step chemically iron ore with H , which produced electrolysis water low-carbon electricity, then transform direct reduced into in an electric arc furnace. second conventional one, similar that used for scrap recycling. so-called reduction process but would use pure electrolytic instead –CO syngas obtained natural gas reforming. In this paper, we show how takes place at microscopic level oxide grains pellets. three-step (hematite-magnetite-wüstite-iron) occurs successively time simultaneously Secondly, sophisticated kinetic model single pellet experimental findings described. Lastly, present mathematical simulation shaft furnace, can be very useful design future installation. main results are using hydrogen, kinetics faster end full metallization, simpler, furnace could squatter. gains terms quantified (85% off) whole compared other zero-carbon solutions Part 2.