Title:
METHOD FOR SEPARATING AND COLLECTING USEFUL METALS FROM WASTE LEAD-FREE SOLDER
Document Type and Number:
WIPO Patent Application WO/2014/030878
Kind Code:
A1
Abstract:
Disclosed is a method for separating and collecting useful metals from a waste lead-free solder. The method for separating and collecting useful metals in the waste lead-free solder according to the present invention, comprises: a leaching step of introducing the waste lead-free solder, which comprises tin, copper, and silver, into a solvent comprising a solubility increasing agent for increasing the solubility of tin (IV) ions and tin ions so as to leach tin from the waste lead-free solder, and then settling copper and silver; a solid-liquid separation step for separating copper and silver that are combined in a solid state and the solvent in which tin ions in a liquid state are dissolved after the leaching step; a tin collection step of collecting tin from the solvent; and a selective collection step of separating copper and silver in the solid state.
Inventors:
YOO KYOUNG-KEUN (KR)
LEE JAE-CHUN (KR)
LEE JAE-CHUN (KR)
Application Number:
PCT/KR2013/007336
Publication Date:
February 27, 2014
Filing Date:
August 14, 2013
Export Citation:
Assignee:
NAT KOREA MARITIME UNIVERSITY R & DB FOUNDATION (KR)
International Classes:
C22B7/00; C22B3/10; C22B15/00; C25C1/14
Foreign References:
| KR20110075406A | 2011-07-06 | |||
| KR100981789B1 | 2010-09-13 | |||
| JP2011079714A | 2011-04-21 | |||
| KR20020094482A | 2002-12-18 |
Attorney, Agent or Firm:
LIM, Seungseop et al. (KR)
임승섭 (KR)
임승섭 (KR)
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