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Title:
高亜鉛含有鉄鉱石を用いた銑鉄製造方法
Document Type and Number:
Japanese Patent JP5428534
Kind Code:
B2
Abstract:
In a method for producing pig iron using iron ore with a high content of zinc, a blast furnace raw material 2 is produced using iron ore with a high content of zinc which contains 0.01 mass % or more of zinc and 50 mass % or more of iron, pig iron is produced by charging the blast furnace raw material 2 into a blast furnace 1 and, at the same time, zinc-containing dust 4 in a blast furnace discharge gas is recovered, and zinc 6 is recovered from the zinc-containing dust 4 using a reduction furnace 5. A mixed raw material into which the zinc-containing dust 4, a carbonaceous solid reducing material and a slag-making material are mixed is preferably charged on a movable hearth, and the mixed raw material is preferably reduced by supplying heat from an upper portion of the movable hearth so as to recover zinc 6 while producing reduced iron 7.

Inventors:
Kouichi Kodai
Hiroyuki Hiroba
Natsuo Ishiwatari
Atsushi Sakai
Application Number:
JP2009129830A
Publication Date:
February 26, 2014
Filing Date:
May 29, 2009
Export Citation:
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Assignee:
jfe Steel Corporation
International Classes:
C21B5/00; C21B13/10; C22B7/02; C22B19/30; C22B19/34
Domestic Patent References:
JP11335712A
JP11172312A
JP11241125A
JP64065212A
JP2005220398A
JP2005299979A
JP2001033173A
JP2000169906A
JP2005089794A
Foreign References:
WO2009131242A1
WO2009145348A1
Attorney, Agent or Firm:
Shigeru Inoue
Kazuhiro Mori