Invention Grant
US08974673B2 Method of regeneration an organic extraction solution that has been used in a liquid-liquid extraction process
有权
在液 - 液萃取过程中已经使用的有机萃取溶液的再生方法
- Patent Title: Method of regeneration an organic extraction solution that has been used in a liquid-liquid extraction process
- Patent Title (中): 在液 - 液萃取过程中已经使用的有机萃取溶液的再生方法
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Application No.: US13376907Application Date: 2010-05-26
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Publication No.: US08974673B2Publication Date: 2015-03-10
- Inventor: Erkki Paatero , Kai Jyrkkä , Sami Virolainen
- Applicant: Erkki Paatero , Kai Jyrkkä , Sami Virolainen
- Applicant Address: FI Espoo
- Assignee: Outotec Oyj
- Current Assignee: Outotec Oyj
- Current Assignee Address: FI Espoo
- Agency: Buchanan, Ingersoll & Rooney PC
- Priority: FI20090238 20090611
- International Application: PCT/FI2010/050425 WO 20100526
- International Announcement: WO2010/142841 WO 20101216
- Main IPC: B01D15/00
- IPC: B01D15/00 ; C22B3/30 ; C22B3/02 ; C07C249/14 ; B01F7/00 ; B01F7/24 ; B01F13/10 ; C07C249/08 ; C22B3/26 ; C22B15/00
Abstract:
The invention relates to a method and apparatus for restoring the extractive potential of organic hydroxyoxime-based extraction solution used in the recovery of metals by liquid-liquid extraction. The method is two-stage, in which an aqueous solution of hydroxylamine or some hydroxylamine compound is used in the reaction stage, and the removal of the undesirable compounds generated in the reaction occurs in the second stage by adsorption purification. The reaction stage and the adsorptive stage are carried out in a mixing tank.
Public/Granted literature
- US20120080382A1 METHOD AND APPARATUS FOR REGENERATION OF EXTRACTION SOLUTION IN METAL EXTRACTION PROCESSES Public/Granted day:2012-04-05
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