LOW TEMPERATURE PROCESS FOR THE REMOVAL AND RECOVERY OF CHLORIDES AND NITRATES FROM AQUEOUS NITRATE SOLUTIONS

Patent · Mon Jan 28 23:00:00 EST 1963

OSTI ID:4737980

Savolainen, J E

A method is described for reducing the chloride content of a solution derived from the dissolution of a stainless steel clad nuclear fuel element with an aqua regia dissolution medium. The solutlon is adjusted to a nitric acid concentration in the range 5 to 10 M and is countercurrently contacted at room temperature with a gaseous oxide of nitrogen selected from NO, NO/sub 2/, N/sub 2/ O/sub 3/, and N/sub 2/O/sub 4/. Chlo ride is recovered from the contacted solution as nitrosyl chloride. After reduction of the chloride content, the solution is then contacted with gaseous NO to reduce the nitric acid molarity to a desired level. (AEC)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-008272
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 3075825
• OSTI ID: 4737980
• Country of Publication: United States
• Language: English

Related Subjects

AIR
AQUA REGIA
ATOMIC MODELS
BURNUP
CHEMISTRY
CHLORIDES
COMPRESSORS
COOLANT LOOPS
COUNTER CURRENT
DECOMPOSITION
DIAGRAMS
DOSEMETERS
ECONOMICS
EFFICIENCY
EL-2
FABRICATION
FUEL CANS
G1
GAMMA RADIATION
GAS COOLANT
GASES
GRAPHITE MODERATOR
HEAVY WATER MODERATOR
HYDROCHLORIC ACID
INFRARED RADIATION
LOW TEMPERATURE
MATERIALS TESTING
MEASURED VALUES
MOLECULES
NATURAL URANIUM FUEL
NITRATES
NITRIC ACID
NITROGEN OXIDES
PLUTONIUM
POLYETHYLENES
POWER
POWER PLANTS
PRESSURE
PRODUCTION
RADIATION DOSES
RECOVERY
REPROCESSING
SOLUTIONS
SPECTRA
STAINLESS STEELS
WATER