公开(公告)号：US20220002826A1

公开(公告)日：2022-01-06

申请号：US17294197

申请日：2019-11-01

申请人： POSCO

发明人： Chang Kuk KO ,  Myoung Kyun SHIN

IPC分类号： C21B13/14 ,  B01D47/00 ,  B01D53/18 ,  C21B13/00 ,  F27B15/02

摘要： A device for manufacturing molten iron is provided. The device for manufacturing the molten iron includes a multi-stage fluidized reduction furnace for reducing a powdered iron ore including hematite and limonite, a melting gas furnace connected to the fluidized reduction furnace through an ore conduit and a gas conduit, a fluidized bed oxidation furnace for oxidizing magnetite to be converted into hematite through steam provided from the fluidized reduction furnace, and a hydrogen processing unit for processing hydrogen generated by the oxidation reaction of magnetite in the fluidized bed oxidation furnace.