Hydrogen-reduced steel for realizing a low-carbon industry is a reduction process that uses hydrogen instead of carbon-based reducing agents such as coal and natural gas, which cause CO2 emissions during steel production, and is a process technology that fundamentally reduces CO2 emissions. The existing steelmaking process using carbon-based reducing agents generates about 2 tons of CO2 per ton of steel . Since iron exists in the form of oxides combined with oxygen, such as hematite (Fe2 O3) and magnetite (Fe3O4), which are called iron ore in nature , reduction is essential in the ironmaking process. When a high concentration of hydrogen is used as a reducing agent in the hydrogen reduction ironmaking method, the oxygen in the iron ore reacts with hydrogen to become water, so iron can be manufactured without generating CO2.
In our Graduate School of Steel Energy and Materials, we are conducting in - depth research to reduce CO2 emissions from the steel industry by applying hydrogen-reduced steel technology to domestic blast furnaces . In addition, we plan to lead the upcoming low-carbon/eco-friendly era by conducting various research on processes that can use 100% hydrogen as a reducing agent instead of conventional coal.