| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for operating a direct reducing furnace using preheated raw materials by which a high product reducing ratio is secured by suppressing excessive temperature rise and fusion at the lower part of the furnace, the direct reducing furnace being a type of a shaft furnace producing reduced iron by using gas mainly containing hydrogen. SOLUTION: The method for operating the direct reducing furnace 10 using preheated raw materials and being a type of a shaft furnace producing the reduced iron 2 using the reducing gas is characterized in that beforehand preheated raw material iron oxide 1 is charged into the direct reducing furnace 10. COPYRIGHT: (C)2012,JPO&INPIT |
