The iron- and steelmaking industry accounts for approximately 14% of domestic CO2 emissions in Japan. There are many difficult challenges to achieve net-zero emissions based on the conventional blast furnace process because it is already operated with high efficiency. One of the promising ironmaking processes aiming at net-zero emissions is the hydrogen reduction shaft furnace. However, one of the major issues in this process is the disintegration of iron ore pellets. however, its mechanism has not been clear yet. In this study, the disintegration mechanism of the pellet in the hydrogen reduction shaft furnace condition at 550°C was examined.
Momma et al. (Thu,) studied this question.