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Title:
METHOD FOR COLLECTING ZINC IN IRON-MAKING DUST
Document Type and Number:
Japanese Patent JP2009179824
Kind Code:
A
Abstract:

To provide a method for collecting zinc in an iron-making dust, which includes more efficient steps and is more economical than a conventional wet method.

This collecting method includes a zinc elution step, a solid-liquid separation step and a zinc collection step. The zinc collection step includes bringing a chelate 30 in contact with an eluate 21, by passing the eluate 21 through a facility having the chelate 30 therein such as a chelate tower to convert zinc in the eluate 21 to a sole zinc ion from a zinc-ammonia complex ion through a zinc chelate complex.


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Inventors:
FUJIWARA SHIGEKI
TSUJI TAKESHI
Application Number:
JP2008017706A
Publication Date:
August 13, 2009
Filing Date:
January 29, 2008
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
C22B19/30; C22B3/04; C22B3/24; C22B7/02; C22B19/20
Attorney, Agent or Firm:
Kenji Sugimura
Kosaku Sugimura
Kiyoshi Kuruma
Shiro Fujitani
Tatsuya Sawada



 
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