Title:
陰イオン交換樹脂を用いた銀の回収方法
Document Type and Number:
Japanese Patent JP4723629
Kind Code:
B2
Abstract:
The present invention provides a method of recovering silver safely and efficiently from a chloride or bromide bath containing various metals. Specifically, a method of recovering silver from a hydrochloric acid solution containing alkali and/or alkaline earth metal chloride, silver, copper and iron ions, comprising the steps of: (1) bringing the solution into contact with a strong-base anion-exchange resin to adsorb silver, copper, and iron on the anion-exchange resin; (2) then washing the anion-exchange resin with water to remove the adsorbed copper and iron; and (3) then bringing the ion-exchange resin into contact with a hydrochloric acid solution to elute the adsorbed silver, is provided.
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Inventors:
Hiroshi Higo
Yoshifumi Abe
Yoshifumi Abe
Application Number:
JP2008291222A
Publication Date:
July 13, 2011
Filing Date:
November 13, 2008
Export Citation:
Assignee:
jx Nippon Mining & Metals Co., Ltd.
International Classes:
C22B11/00; C22B3/04; C22B3/26; C22B3/42; C22B15/00
Domestic Patent References:
| JP49070823A | ||||
| JP51017114A | ||||
| JP2002105598A | ||||
| JP2002504190A | ||||
| JP11072891A |
Attorney, Agent or Firm:
Axis International Patent Business Corporation