Sharif Digital Repository

The sponge iron of the Hoganas process have a high metallization degree (93-96%) and its carbon content is about 0.1%. These characteristics are suitable for powder metallurgy but in order to use this DRI for steelmaking, it needs lower metallization degree and higher content of carbon. First, for using Hoganas sponge iron for steel production, 94% of metallization is adequate as some of iron is still in the form of FeO which its reduction in Electric Arc Furnace (EAF) cause better agitation in order to utilize heat transfer. Also, excess carbon content in the DRI can have many advantages other than preventing the sponge iron from re-oxidation. Some of the carbon can be in the form of Fe3C...