| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a process for manufacturing granular iron having few phosphorus content. <P>SOLUTION: When the granular iron is manufactured, agglomerates using mixed materials containing iron oxide-contained material and carbonaceous reducing agent as raw materials, are charged on a furnace hearth with a coal-based material laid thereon, and heating the agglomerates to reduce and melt the iron-oxide in the mixed materials as the raw material; the temperature of the agglomerates is controlled to 1,200-1,500°C, the oxygen partial pressure in the standard state of atmospheric gas for treating the agglomerates, is controlled to≥2.0×10<SP>-13</SP>atm and the gas linear velocity is controlled to≥4.5 cm/s. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
