Title:
METHOD FOR RECOVERING COPPER ALLOY-DERIVED METALS
Document Type and Number:
WIPO Patent Application WO/2018/092954
Kind Code:
A1
Abstract:
An aspect of the present invention provides a method for recovering metals, the method comprising the steps of: (a) atomizing a first copper alloy to obtain a power; (b) dissolving the powder in a first acidic solution to separate a second copper alloy and impurities; (c) subjecting the second copper alloy to electrolytic refining to recover copper; (d) dissolving the impurities in a second acidic solution to prepare a metal salt stock solution, followed by filtration, to remove a silver salt; (e) heating the metal salt stock solution, followed by solvent extraction, to separate a first organic phase and a first aqueous phase; (f) washing the first organic phase to separate a second organic phase and a second aqueous phase; (g) reducing the second organic phase to obtain gold and a first waste liquid; and (h) adding a reducing agent to the first and second aqueous phases to obtain gold and a second waste liquid.
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Inventors:
KWON KYE HYUN (KR)
PARK JUN BOK (KR)
HAN KOOK TAE (KR)
KIM SUN TAE (KR)
KANG KI HYUN (KR)
JEON YANG SEOK (KR)
PARK JUN BOK (KR)
HAN KOOK TAE (KR)
KIM SUN TAE (KR)
KANG KI HYUN (KR)
JEON YANG SEOK (KR)
Application Number:
PCT/KR2016/013404
Publication Date:
May 24, 2018
Filing Date:
November 21, 2016
Export Citation:
Assignee:
SAMDUCK PRECIOUS MATERALS CO LTD (KR)
International Classes:
C25C1/12; C22B3/00; C22B3/20; C22B15/00
Foreign References:
| KR101204995B1 | 2012-11-27 | |||
| KR20120133414A | 2012-12-11 | |||
| KR20130099948A | 2013-09-06 | |||
| JP2011063882A | 2011-03-31 | |||
| KR20000012369A | 2000-03-06 |
Attorney, Agent or Firm:
HANA IP LAW FIRM (KR)
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