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
- 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 = {Wed Nov 04 00:00:00 EST 1981},
month = {Wed Nov 04 00:00:00 EST 1981}
}
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