Method for oxygen reduction in a uranium-recovery process. [US DOE patent application]
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.
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- Dept. of Energy
- Patent Number(s):
- None
- Application Number:
- ON: DE82020872
- OSTI ID:
- 5096737
- Country of Publication:
- United States
- Language:
- English
Similar Records
Removing oxygen from a solvent extractant in an uranium recovery process
Reduction of iron in a reductive stripping process for the recovery of uranium from wet process phosphoric acid
Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
ACTINIDES
ALKANES
ARGON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
DATA
DISPERSIONS
DODECANE
ELEMENTS
ESTERS
EXPERIMENTAL DATA
EXTRACTION
EXTRACTIVE METALLURGY
FERTILIZER INDUSTRY
FLUIDS
GASES
HDEHP
HELIUM
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
INDUSTRY
INFORMATION
INORGANIC ACIDS
METALLURGY
METALS
MIXTURES
NITROGEN
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOSPHORIC ACID
PHOSPHORIC ACID ESTERS
RARE GASES
RECOVERY
REMOVAL
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TOPO
URANIUM
WASTE PRODUCT UTILIZATION