Title:
鋼屑中の銅の除去方法
Document Type and Number:
Japanese Patent JP5581759
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for efficiently removing copper in iron scrap without needing a large-scale facility, when producing a high-grade steel by using copper-containing iron scrap as an iron source.SOLUTION: The method for removing copper in the iron scrap includes the steps of: carburization-melting the copper-containing iron scrap by using an arc furnace to produce molten pig iron for steelmaking; then removing copper contained in the molten pig iron by using a sulfur-containing flux; and subsequently removing sulfur contained in the molten pig iron. In this case, it is preferable to use an arc furnace having a melting chamber and a shaft-type preheating chamber which is directly connected to the top part of the melting chamber and preheats the copper-containing iron scrap. as the arc furnace, to use a flux containing NaS as a main component as the sulfur-containing flux, and to remove copper in a mechanically-stirring type smelting apparatus.
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Inventors:
Ozawa 純仁
Teruo Fujibayashi
Yuichi Uchida
Yasuo Kishimoto
Teruo Fujibayashi
Yuichi Uchida
Yasuo Kishimoto
Application Number:
JP2010063628A
Publication Date:
September 03, 2014
Filing Date:
March 19, 2010
Export Citation:
Assignee:
JFE Steel Corporation
International Classes:
C21C1/04; C21C1/02; C21C5/52; C22B7/00; C22B9/10; C22B15/02; F27D13/00
Attorney, Agent or Firm:
Shigeru Inoue
Woods Kazuhiro
Woods Kazuhiro