GLOBAL CO2 EMISSION REDUCTION POTENTIAL FROM STEEL SECTOR IN 2050

Abstract

 This study estimates global CO₂ emission reduction potential from iron and steel sector in 2050. As countermeasures for CO₂ emission reduction, installation of electric arc furnace is adopted. The constraint of installation is set up from the both supply side of iron scrap and demand side of goods-wise crude steel production. The crude steel production is estimated under two case; BaU case (No countermeasures) and CM case (With countermeasures).
 For all the estimation periods, crude steel production is greater than generation of iron scrap. This makes it impossible to substitute electric arc furnaces for all the basic oxygen furnaces. Even though 100% recycling rate of iron scrap, under BaU case, CO₂ emission in 2050 increases by 12% compared to that in 2005. With same condition, 32% of CO₂ emission reduction is achieved in CM case. With a constraint from demand side, the reduction potential is 6% (CM case.)