A recovery method and a recovery subsystem - Mitsubishi Electric Corporation

Title:

A recovery method and a recovery subsystem

Document Type and Number:

Japanese Patent JP6214413

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a recovery method which enables recovery work of a noble metal from a used electronic substrate and the like to be performed at low cost and with high efficiency, and to provide a recovery apparatus for use in recovery work using the recovery method.SOLUTION: There is provided the recovery method comprising the steps of: electrolyzing a neutral salt solution to produce an acidic solution and an alkaline solution; charging a substrate containing a gold-containing member into a first treatment solution which is one of the acidic solution and the alkaline solution, and installing an anode and a cathode in the first treatment solution; peeling the gold-containing member from the substrate by applying a voltage between the anode and the cathode while the anode and the gold-containing member are in contact with each other; recovering the gold-containing member peeled from the substrate, from the first treatment solution; precipitating impurity materials other than gold into a third treatment solution produced by adding a second treatment solution which is another of the acidic solution and the alkaline solution, to the first treatment solution; and recovering impurity materials from the third treatment solution.

Inventors:

Hisai Katsura
Takahashi Riko

Application Number:

JP2014017159A

Publication Date:

October 18, 2017

Filing Date:

January 31, 2014

Export Citation:

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