Title:
MICROWAVE-ASSISTED LEACHING METHOD ENABLING SIMULTANEOUS LEACHING AND SELECTIVE SEPARATION OF GOLD AND COPPER FROM WASTE PRINTED CIRCUIT BOARD
Document Type and Number:
WIPO Patent Application WO/2020/149628
Kind Code:
A1
Abstract:
The present invention relates to a leaching method in which leaching of a precious metal and a non-precious metal from a waste printed circuit board and selective separation thereof by means of a hydrophobic ionic liquid are continuously performed. The present invention can improve the leaching rate and leaching efficiency of the precious metal and non-precious metal by pulverizing the waste printed circuit board by adding microwaves to a leach solution, compared to the conventional leaching process.
Inventors:
YUN YEOUNGSANG (KR)
CHOI JONGWON (KR)
CHO CHULWOONG (KR)
ZHAO YUFENG (KR)
SONG MYUNGHEE (KR)
JOHNKWAME BEDIACO (KR)
CHOI JONGWON (KR)
CHO CHULWOONG (KR)
ZHAO YUFENG (KR)
SONG MYUNGHEE (KR)
JOHNKWAME BEDIACO (KR)
Application Number:
PCT/KR2020/000714
Publication Date:
July 23, 2020
Filing Date:
January 15, 2020
Export Citation:
Assignee:
NAT UNIV CHONBUK IND COOP FOUND (KR)
International Classes:
C22B3/00; C22B3/04
Domestic Patent References:
| WO2012079130A1 | 2012-06-21 |
Foreign References:
| US20110314967A1 | 2011-12-29 | |||
| US20020157504A1 | 2002-10-31 | |||
| KR20180012321A | 2018-02-05 | |||
| JP2006057137A | 2006-03-02 |
Attorney, Agent or Firm:
LEE, Junhyek (KR)
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