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Process of precipitating zirconium or hafnium from spent pickling solutions

Patent ·
OSTI ID:5539249
;

This patent describes a process for regenerating a spent, fluoride-containing pickle solution used in the pickling of zirconium or hafnium metal or their alloys. It comprises adding to the spent pickle solution a sufficient amount of sodium sulfate to precipitate sodium zirconium or hafnium fluoride.

Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (United States)
Patent Number(s):
A; US 5076884
Application Number:
PPN: US 7-555333
OSTI ID:
5539249
Country of Publication:
United States
Language:
English

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Related Subjects

050800 -- Nuclear Fuels-- Spent Fuels Reprocessing
052000* -- Nuclear Fuels-- Waste Management
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALKALI METAL COMPOUNDS
ELEMENTS
ENERGY SOURCES
FLUORIDES
FLUORINE COMPOUNDS
FUELS
HAFNIUM
HALIDES
HALOGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
MATERIALS
METALS
NUCLEAR FUELS
OXYGEN COMPOUNDS
PICKLING
PRECIPITATION
PROCESSING
REACTOR MATERIALS
REGENERATION
SEPARATION PROCESSES
SODIUM COMPOUNDS
SODIUM SULFATES
SPENT FUELS
SULFATES
SULFUR COMPOUNDS
SURFACE TREATMENTS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
ZIRCONIUM