Discussions on Progress of Low Carbon Ironmaking Technologies with Hydrogen Metallurgy and Approaches of Ironmaking Technology with Hydrogen in Baotou Steel
The iron and steel industry is the pillar industry in national economic development as well as its energy con-servation and carbon reduction are the priority among priorities to achieve the national development goal of"carbon dioxide emission and carbon neutrality". In this paper,it is briefly introduced the types and characteristics of main low carbon ironmaking technologies with hydrogen metallurgy as well as expounded its progress and current situations at home and a-broad. The hydrogen rich reduction technology with blast furnace and hydrogen-based direct reduction technology with shaft furnace are the main technologies of low carbon ironmaking technologies with hydrogen metallurgy. Among them,the ability of carbon reduction for hydrogen rich reduction technology with blast furnace is limited,so it can be as short-term development direction of low carbon ironmaking technologies with hydrogen metallurgy for iron and steel industry. If com-bine with the carbon capture,utilization and storage (CCUS)technology,CO2 emissions could be further decreased. The hydrogen-based direct reduction technology with shaft furnace is without fossil energy in production process and carbon e-missions could be reduced by over 80% compared with traditional production process of"blast furnace-converter",which is inevitable development trend of technological reform in the iron and steel industry. In order to actively respond to the na-tional green and low carbon development strategy and five major political tasks of Inner Mongolia,Baotou Steel actively im-plements the green low carbon ironmaking technologies with hydrogen including hydrogen-based mineral phase transforma-tion of medium lean ore in Bayan Obo,hydrogen rich reduction with blast furnace and hydrogen-based direct reduction with shaft furnace so that the low carbon green production process of iron and steel is significantly improved.
low carbonhydrogen metallurgyhydrogen-based mineral phase transformationhydrogen rich reduction with blast furnacehydrogen-based direct reduction with shaft furnace