发明授权
- 专利标题: Method of recovering silver using anion-exchange resin
- 专利标题(中): 使用阴离子交换树脂回收银的方法
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申请号: US12400636申请日: 2009-03-09
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公开(公告)号: US08206595B2公开(公告)日: 2012-06-26
- 发明人: Hiroshi Hiai , Yoshifumi Abe
- 申请人: Hiroshi Hiai , Yoshifumi Abe
- 申请人地址: JP Tokyo
- 专利权人: JX Nippon Mining & Metals
- 当前专利权人: JX Nippon Mining & Metals
- 当前专利权人地址: JP Tokyo
- 代理机构: Birch, Stewart, Kolasch & Birch, LLP
- 优先权: JP2008-291222 20081113
- 主分类号: B01D15/04
- IPC分类号: B01D15/04 ; C22B3/00 ; C22B3/04 ; C22B3/06 ; C22B11/06
摘要:
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.
公开/授权文献
- US20100116093A1 METHOD OF RECOVERING SILVER USING ANION-EXCHANGE RESIN 公开/授权日:2010-05-13