| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technique for producing non-fired agglomerated ore having high hot strength as an ore raw material for a blast furnace using sintered powder or straight undersized powder, particularly, capable of producing non-fired agglomerated ore having high temperature compression strength and satisfactory reduction degradation impellent (RDI) and reducibility index (RI). <P>SOLUTION: In the method for producing an ore raw material for a blast furnace where sintered powder of≤5 mm generated upon the production of sintered ore is formed without being made into sintering return ore, so as to be agglomerated into non-fired agglomerated ore, and this is used as an ore raw material for a blast furnace, the raw material for forming for obtaining the non-fired agglomerated ore is composed of the one at least comprising iron oxide fine powder as well as the above sintered powder, and the raw material for forming is admixed with a binder, and kneading is performed, and the kneaded matter is subsequently formed, and the forming is subjected to curing treatment, so as to be the non-fired agglomerated ore. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
