PROCESS FOR THE CONTINUOUS PASSIVATION OF SPONGE IRON PARTICLES

摘要

A process is provided for the passivation of sponge iron particles which are continuously fed into a vessel and continuously withdrawn therefrom. The particles descend downwardly through the vessel and are passivated by a continuous stream of a gaseous medium flowing countercurrently therethrough. The stream is precisely regulated in its oxygen composition, flow rate and temperature.