Title:
PROCESSES FOR RECOVERING METALS FROM AQUEOUS SOLUTIONS
Document Type and Number:
WIPO Patent Application WO/2011/005736
Kind Code:
A3
Abstract:
Provided herein are processes for recovering molybdenum and/or other value metals (e.g., uranium) present in aqueous solutions from a large range of concentrations: from ppm to grams per liter via a solvent extraction process by extracting the molybdenum and/or other value metal from the aqueous solution by contacting it with an organic phase solution containing a phosphinic acid, stripping the molybdenum and/or other value metal from the organic phase solution by contacting it with an aqueous phase strip solution containing an inorganic compound and having a <1.0 M concentration of free ammonia, and recovering the molybdenum and/or other value metal by separating it from the aqueous phase strip solution. When the molybdenum and/or other value metal are present only in low concentration, the processes can include an organic phase recycle step and/or an aqueous phase strip recycle step in order to concentrate the metal prior to recovery.
Inventors:
BEDNARSKI TROY (US)
COCALIA VIOLINA (US)
SODERSTROM MATTHEW (US)
KAMENETZKY EDUARDO (US)
CAMERON ANDREW (US)
HARRIS DOUG (US)
COCALIA VIOLINA (US)
SODERSTROM MATTHEW (US)
KAMENETZKY EDUARDO (US)
CAMERON ANDREW (US)
HARRIS DOUG (US)
Application Number:
PCT/US2010/041032
Publication Date:
March 24, 2011
Filing Date:
July 06, 2010
Export Citation:
Assignee:
CYTEC TECH CORP (US)
BEDNARSKI TROY (US)
COCALIA VIOLINA (US)
SODERSTROM MATTHEW (US)
KAMENETZKY EDUARDO (US)
CAMERON ANDREW (US)
HARRIS DOUG (US)
BEDNARSKI TROY (US)
COCALIA VIOLINA (US)
SODERSTROM MATTHEW (US)
KAMENETZKY EDUARDO (US)
CAMERON ANDREW (US)
HARRIS DOUG (US)
International Classes:
C22B3/00; C22B34/34
Domestic Patent References:
| WO1997001649A1 | 1997-01-16 |
Foreign References:
| US3180703A | 1965-04-27 | |||
| GB2122593A | 1984-01-18 | |||
| US4258013A | 1981-03-24 | |||
| GB1556541A | 1979-11-28 | |||
| GB1551059A | 1979-08-22 |
Other References:
P. ZHANG AND K. INOUE: "Recovery of Metal Values from Spent Hydrosulfurization Catalyst by Liquid-Liquid Extraction", ENERGY & FUELS, vol. 9, 1 March 1995 (1995-03-01) - 30 April 1995 (1995-04-30), pages 231 - 239, XP002601999
SAILY A ET AL: "Technical Note Thiophosphinic acids as selective extractants for molybdenum recovery from a low grade ore and spent catalysts", HYDROMETALLURGY, ELSEVIER SCIENTIFIC PUBLISHING CY. AMSTERDAM, NL LNKD- DOI:10.1016/0304-386X(95)00052-I, vol. 41, no. 1, 1 May 1996 (1996-05-01), pages 99 - 105, XP004040673, ISSN: 0304-386X
SAILY A ET AL: "Technical Note Thiophosphinic acids as selective extractants for molybdenum recovery from a low grade ore and spent catalysts", HYDROMETALLURGY, ELSEVIER SCIENTIFIC PUBLISHING CY. AMSTERDAM, NL LNKD- DOI:10.1016/0304-386X(95)00052-I, vol. 41, no. 1, 1 May 1996 (1996-05-01), pages 99 - 105, XP004040673, ISSN: 0304-386X
Attorney, Agent or Firm:
BELL, Charles, E. et al. (1937 West Main StreetStamford, CT, US)
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