Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
VANADIUM RECOVERY METHOD, METHOD FOR PRODUCING ELECTROLYTIC SOLUTION FOR REDOX FLOW BATTERIES, VANADIUM RECOVERY DEVICE, AND DEVICE FOR PRODUCING ELECTROLYTIC SOLUTION FOR REDOX FLOW BATTERIES
Document Type and Number:
WIPO Patent Application WO/2017/010437
Kind Code:
A1
Abstract:
The present invention is characterized by comprising: an acid leaching step for obtaining a leach liquid by causing leaching of, by means of an acid, a metal mixture at least containing vanadium and at least one type of a divalent or trivalent metal selected from nickel, cobalt, manganese, palladium, platinum, copper, and zinc; a complex generation step for adding an ammoniacal alkaline aqueous solution to the leach liquid for adjusting the pH to 10-12 and generating, in the alkaline aqueous solution, an ammine complex of a divalent or trivalent metal ion and an anion complex of a tetravalent and/or pentavalent vanadium ion; a divalent or trivalent metal recovery step for adding a carrier having a carboxyl group to the alkaline aqueous solution in which the ammine complex and the anion complex are generated, causing the divalent or trivalent metal ion in the ammine complex to be selectively adsorbed by the carrier, and recovering the divalent or trivalent metal ion; and a vanadium recovery step for recovering vanadium from the anion complex contained in the alkaline aqueous solution after the divalent or trivalent metal ion is recovered.

Inventors:
TAKARADA TAKAYUKI (JP)
KANNARI NAOKATSU (JP)
NISHIDE TSUTOMU (JP)
Application Number:
JP2016/070342
Publication Date:
January 19, 2017
Filing Date:
July 08, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NAT UNIV CORP GUNMA UNIV (JP)
NIHON KANKI IND CO LTD (JP)
International Classes:
C22B34/22; C22B3/24; C22B3/44
Foreign References:
JP2002187720A2002-07-05
JPH09125171A1997-05-13
Attorney, Agent or Firm:
KISARAGI ASSOCIATES (JP)
きさらぎ international patent business corporation (JP)
Download PDF: