Operational Aspects Of Sponge Iron
1. krupp sponge iron process the krupp. sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (fig. 1). the feed is introduced together with reducing and de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge.