製鉄における資源動向と脱炭素化へ向けた取り組み

抄録

Since CO₂ is inevitably generated in the iron-making process, steel industries have made many efforts to reduce CO₂ emissions for decades. On the other hand, demanded steel production has increased in developing countries. In contrast, a considerable amount of steel products are accumulated in the society, and the amount of steel scrap has been increasing in the developed countries. In addition, the grade of iron ore is becoming worse every year due to the increasing demand for steel. To achieve carbon neutrality, innovative technologies need to be developed considering the future market trends for steels and the supply of iron resources, including iron ores and steel scraps. In this paper, recent studies on iron ores and steel scraps and efforts to reduce CO₂ emission were reviewed, and issues to achieve carbon neutrality in the future were discussed.