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Title: Method for oxygen reduction in a uranium-recovery process. [US DOE patent application]

Abstract

An improvement in effecting uranium recovery from phosphoric acid solutions is provided by sparging dissolved oxygen contained in solutions and solvents used in a reductive stripping stage with an effective volume of a nonoxidizing gas before the introduction of the solutions and solvents into the stage. Effective volumes of nonoxidizing gases, selected from the group consisting of argon, carbon dioxide, carbon monoxide, helium, hydrogen, nitrogen, sulfur dioxide, and mixtures thereof, displace oxygen from the solutions and solvents thereby reduce deleterious effects of oxygen such as excessive consumption of elemental or ferrous iron and accumulation of complex iron phosphates or cruds.

Inventors:
; ;
Issue Date:
OSTI Identifier:
5096737
Application Number:
ON: DE82020872
Assignee:
Dept. of Energy ERA-07-059260; EDB-82-154490
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FERTILIZER INDUSTRY; WASTE PRODUCT UTILIZATION; HDEHP; SOLVENT PROPERTIES; SOLVENT EXTRACTION; TOPO; URANIUM; RECOVERY; ARGON; CARBON DIOXIDE; CARBON MONOXIDE; DODECANE; EXPERIMENTAL DATA; EXTRACTIVE METALLURGY; HELIUM; HYDROGEN; MIXTURES; NITROGEN; OXYGEN; PHOSPHORIC ACID; REMOVAL; SULFUR DIOXIDE; ACTINIDES; ALKANES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; DATA; DISPERSIONS; ELEMENTS; ESTERS; EXTRACTION; FLUIDS; GASES; HYDROCARBONS; HYDROGEN COMPOUNDS; INDUSTRY; INFORMATION; INORGANIC ACIDS; METALLURGY; METALS; NONMETALS; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; RARE GASES; SEPARATION PROCESSES; SULFUR COMPOUNDS; SULFUR OXIDES; 050400* - Nuclear Fuels- Feed Processing; 400105 - Separation Procedures

Citation Formats

Hurst, F.J., Brown, G.M., and Posey, F.A. Method for oxygen reduction in a uranium-recovery process. [US DOE patent application]. United States: N. p., 1981. Web.
Hurst, F.J., Brown, G.M., & Posey, F.A. Method for oxygen reduction in a uranium-recovery process. [US DOE patent application]. United States.
Hurst, F.J., Brown, G.M., and Posey, F.A. Wed . "Method for oxygen reduction in a uranium-recovery process. [US DOE patent application]". United States.
@article{osti_5096737,
title = {Method for oxygen reduction in a uranium-recovery process. [US DOE patent application]},
author = {Hurst, F.J. and Brown, G.M. and Posey, F.A.},
abstractNote = {An improvement in effecting uranium recovery from phosphoric acid solutions is provided by sparging dissolved oxygen contained in solutions and solvents used in a reductive stripping stage with an effective volume of a nonoxidizing gas before the introduction of the solutions and solvents into the stage. Effective volumes of nonoxidizing gases, selected from the group consisting of argon, carbon dioxide, carbon monoxide, helium, hydrogen, nitrogen, sulfur dioxide, and mixtures thereof, displace oxygen from the solutions and solvents thereby reduce deleterious effects of oxygen such as excessive consumption of elemental or ferrous iron and accumulation of complex iron phosphates or cruds.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {11}
}