Invention Grant
- Patent Title: Extraction solvent for extracting metallic elements, method for producing same, and method for recovering metallic elements
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Application No.: US14400760Application Date: 2012-05-16
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Publication No.: US09752208B2Publication Date: 2017-09-05
- Inventor: Timothy W. Yarlott , Kokichi Hanaoka , Hiroshi Tanaka , Dick Wullaert , Edward E. Alexander
- Applicant: Timothy W. Yarlott , Kokichi Hanaoka , Hiroshi Tanaka , Dick Wullaert , Edward E. Alexander
- Agency: Norris McLaughlin & Marcus P.A.
- International Application: PCT/JP2012/062529 WO 20120516
- International Announcement: WO2013/171861 WO 20131121
- Main IPC: C22B3/10
- IPC: C22B3/10 ; C22B3/26 ; C22B3/00 ; C22B7/00 ; C22B7/02 ; C25B1/00 ; C25B1/26
Abstract:
The present invention provides an extraction solvent for extracting metallic elements that is characterized in that: the total concentration of chlorine (Cl2) and hypochlorous acid (HOCl) is from 20 to 1000 ppm; chlorine (Cl2) and hypochlorous acid (HOCl) are included at a molar ratio of 1:1 to 1:11; the oxidation-reduction potential is from 1100 to 1400 mV; and the pH is from 1.7 to 3.7. The present invention also provides a method for producing said extraction solvent, and a method for recovering metallic elements by using said extraction solvent.
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