METHOD FOR RECOVERY OF METALS FROM WASTE PRINTED CIRCUIT BOARDS

Title:

METHOD FOR RECOVERY OF METALS FROM WASTE PRINTED CIRCUIT BOARDS

Document Type and Number:

WIPO Patent Application WO/2014/042390

Kind Code:

A1

Abstract:

Provided is a method for recovery of metals from waste PCBs including (a) injecting water into cut waste PCBs and conducting ball milling to liberate metals and plastics from each other to thereby prepare a mixture containing the metals, the plastics and water; and (b) using the mixture as a pulp solution and subjecting the pulp solution to floating separation to separate and recover the liberated metals. The present invention provides increased separation efficiencies of metal components and non-metal components from the waste PCBs, and particularly, provides a simple and economic process that can recover the metal components existing in the plastic components.

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Inventors:

JEONG JIN KI (KR)
LEE JAE CHUN (KR)
SHIN WOO CHUL (KR)

Application Number:

PCT/KR2013/008061

Publication Date:

March 20, 2014

Filing Date:

September 06, 2013

Export Citation:

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Assignee:

KOREA INST GEOSCIENCE & MINERA (KR)

International Classes:

C22B7/00; B09B3/00

Foreign References:

KR20090106056A	2009-10-08
KR20030003974A	2003-01-14
JPH083655A	1996-01-09
KR20110051368A	2011-05-18

Attorney, Agent or Firm:

KWON, Oh-Sig et al. (Hanbat-daeroSeo-gu, Daejeon 302-828, KR)

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