Cold DRI (CDRI), discharged from the plant reactor, is reduced iron in pellet form, with bulk density of 1.6-1.8 t/m3 and high porosity, which means it has a tendency to reoxidize in contact with water, air and at temperatures above 80°C. Therefore, it must be stored in a dry, covered area, with inert gas blanketing such as nitrogen if in an enclosed storage.
Compared to Hot Briquetted Iron (HBI), melting CDRI is less demanding in terms of both energy and time.