(57) Abstract At the same time as for this invention, being continual, the manner which produces the iron which is directly reduced with efficient configuration is offered. At the same time this manner is not done, being the blend of the iron oxide blend of granularity and the carbon based reducing agent blend of granularity, the agglomerate substantially and includes in thing and lay out the same blend in the rotary open-hearth furnace thing and the aforementioned blend which offer the blend which includes the moisture under approximately 14% at weight ratio, exposes the same blend to reduction state and reduces the substantial part of iron oxide, producing the spongy iron with that and discharging the same spongy iron from the rotary open-hearth furnace, with includes.
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