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Title: SEPARATION OF HAFNIUM FROM ZIRCONIUM

Abstract

The separation of hafnium impurities from zirconium can be accomplished by means of organic solvent extraction. The hafnium-containing zirconium feed material is dissolved in an aqueous chloride solution and the resulting solution is contacted with an organic hexone phase, with at least one of the phases containing thiocyanate. The hafnium is extracted into the organic phase while zirconium remains in the aqueous phase. Further recovery of zirconium is effected by stripping the onganic phase with a hydrochloric acid solution and commingling the resulting strip solution with the aqueous feed solution. Hexone is recovered and recycled by means of scrubbing the onganic phase with a sulfuric acid solution to remove the hafnium, and thiocyanate is recovered and recycled by means of neutralizing the effluent streams to obtain ammonium thiocyanate.

Inventors:
; ;
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4164766
Patent Number(s):
US 2938769
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-14-021621
NSA Number:
NSA-14-021621
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; AMMONIUM COMPOUNDS; CHLORIDES; CYANATES; HAFNIUM; HEXANE; IMPURITIES; KETONES; SEPARATION PROCESSES; SOLUTIONS; SOLVENT EXTRACTION; WATER; ZIRCONIUM

Citation Formats

Overholser, L.B., Barton, C.J. Sr., and Ramsey, J.W.. SEPARATION OF HAFNIUM FROM ZIRCONIUM. United States: N. p., 1960. Web.
Overholser, L.B., Barton, C.J. Sr., & Ramsey, J.W.. SEPARATION OF HAFNIUM FROM ZIRCONIUM. United States.
Overholser, L.B., Barton, C.J. Sr., and Ramsey, J.W.. Tue . "SEPARATION OF HAFNIUM FROM ZIRCONIUM". United States. doi:.
@article{osti_4164766,
title = {SEPARATION OF HAFNIUM FROM ZIRCONIUM},
author = {Overholser, L.B. and Barton, C.J. Sr. and Ramsey, J.W.},
abstractNote = {The separation of hafnium impurities from zirconium can be accomplished by means of organic solvent extraction. The hafnium-containing zirconium feed material is dissolved in an aqueous chloride solution and the resulting solution is contacted with an organic hexone phase, with at least one of the phases containing thiocyanate. The hafnium is extracted into the organic phase while zirconium remains in the aqueous phase. Further recovery of zirconium is effected by stripping the onganic phase with a hydrochloric acid solution and commingling the resulting strip solution with the aqueous feed solution. Hexone is recovered and recycled by means of scrubbing the onganic phase with a sulfuric acid solution to remove the hafnium, and thiocyanate is recovered and recycled by means of neutralizing the effluent streams to obtain ammonium thiocyanate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 31 00:00:00 EDT 1960},
month = {Tue May 31 00:00:00 EDT 1960}
}