Title:
A metal recovery method and a metal recovery subsystem used for it
Document Type and Number:
Japanese Patent JP5985926
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a metal recovery method and a metal recovery device used for the method which can improve recovery efficiency of an objective metal.SOLUTION: A method to recover an objective metal from processed stuff containing oxide or hydroxide of the objective metal comprises: an iron reduction process 1 of reducing ferric ion to ferrous ion with iron reduction bacteria; a leaching process 2 of reducing oxide or hydroxide of the objective metal with the ferrous ion by making leachate containing the ferrous ion and the processed stuff contact, and leaching the objective metal in the leachate; a solid-liquid separation process 3 of separating the leachate which the objective metal leached in the leaching process as a leaching pregnant solution from the processed stuff, by the leaching process; and a metal recovery process 4 recovering the objective metal from the leaching pregnant solution. The iron reduction process and the leaching process are executed in discrete reaction containers.
Inventors:
Yasuhiro Konishi
Norizo Saito
Masashi Motoi
Hiroshi Kawaguchi
Norizo Saito
Masashi Motoi
Hiroshi Kawaguchi
Application Number:
JP2012181485A
Publication Date:
September 06, 2016
Filing Date:
August 20, 2012
Export Citation:
Assignee:
Osaka Prefectural University
Toray Engineering Co., Ltd.
Toray Engineering Co., Ltd.
International Classes:
C22B3/18; C22B26/12; C22B47/00
Domestic Patent References:
| JP2011190515A |
Attorney, Agent or Firm:
Fukami patent office
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