| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a method and an apparatus for injecting reduction material into a blast furnace with which even in the case of injecting natural gas etc., as gaseous reduction material from a tuyere of the blast furnace, coke ratio can be reduced without pressure loss. <P>SOLUTION: In the method for injecting the reduction material, fine powdery coal and/or grain size refined synthetic resin and gaseous reduction material are injected from the separate lances in a tuyere of the blast furnace through several injecting lances 5, 7 arranged through a blowing pipe 3 of the blast furnace. Wherein, the injecting position of the gaseous reduction material is set in the range of 0-150 mm at the downstream side of the injecting position of the fine powdery coal and/or the grain size refined synthetic resin. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
