| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a dust compact for reduction treatment which is efficiently/stably recycled as an iron raw material even when the iron-oxide-based raw material to be used contains a volatile component such as a Cl element and an F element, and to provide a method for producing reduced iron by using it. <P>SOLUTION: The dust compact for reduction treatment is manufactured by the steps of compacting a mixture of the iron-oxide-based raw material such as ironmaking dust produced in an ironmaking process and charcoal wood, and heating the compact in a rotating bed furnace to reduce it, wherein the iron-oxide-based raw material has such a composition as to satisfy the following expression (A): (A:a ratio of iron concentration (total Fe) in raw material to the total concentration of Cl, F, Zn, Na, K and Pb≥10), and the compact after the mixture has been compacted has a porosity of 30% or less. The method for producing the reduced iron uses the reduced compact. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
