Title:
METHOD FOR RECYCLING CONVERTER DUST, AND BLAST FURNACE RAW MATERIAL
Document Type and Number:
Japanese Patent JP2014173140
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for recycling converter dust, in which the converter dust, that is obtained by using zinc-containing dust as an iron source and generated by blowing, can be recovered easily and surely as a blast furnace raw material.SOLUTION: The method for recycling converter dust, which is generated by blowing oxygen into an iron source containing no galvanized scrap substantially, comprises the steps of: agglomerating dust containing iron and zinc; charging the agglomerated dust in a converter before blowing is started; and recovering the converter dust to be generated after blowing is started. The average volume B of the agglomerated dust is 1-70 cm. When a ratio Y(%) of the supplied oxygen amount q(Nm) to the total oxygen amount Q(Nm) to be supplied by the blowing is smaller than Y1 or larger than Y2, only the converter dust is recovered by the blast furnace raw material. Y1=2.78×B-2.68 and Y2=3.14×B+46.61.
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Inventors:
SUGITANI TAKASHI
MAEDA KENTARO
SAWAYAMA MUNEYOSHI
MAEDA KENTARO
SAWAYAMA MUNEYOSHI
Application Number:
JP2013047071A
Publication Date:
September 22, 2014
Filing Date:
March 08, 2013
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
C21C5/38; C21B5/00; C21C5/30; C22B1/244; C22B7/02; C22B19/30
Attorney, Agent or Firm:
Kazuki Amano
Yoshinori Ikeda
Hiroo Ogawa
Koji Ishida
Koju Kagami
Yoshiaki Negi
Takashi Shiotani
Yoshinori Ikeda
Hiroo Ogawa
Koji Ishida
Koju Kagami
Yoshiaki Negi
Takashi Shiotani
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