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Title: SEPARATION PROCESS FOR ZIRCONIUM AND COMPOUNDS THEREOF

Abstract

The separation of zirconium from columbium, rare earths, yttrium and the alkaline earth metals, such mixtures of elements occurring in zirconium ores or neutron irradiated uranium is described. According to the invention a suitable separation of zirconium from a one normal acidic aqueous solution containing salts, nitrates for example, of tetravalent zirconium, pentavalent columbium, yttrium, rare earths in the trivalent state and alkaline earths can be obtained by contacting the aqueous solution with a fluorinated beta diketonc alone or in an organic solvent solution, such as benzene, to form a zirconium chelate compound. When the organic solvent is present the zirconium chelate compound is directly extracted; otherwise it is separated by filtration. The zirconium may be recovered from contacting the organic solvent solution containing the chelated compound by back extraction with either an aqueous hydrofluoric acid or an oxalic acid solution.

Inventors:
;
Issue Date:
OSTI Identifier:
4206657
Patent Number(s):
2892681
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
NSA Number:
NSA-13-022052
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; ACIDITY; ALKALINE EARTH METALS; BENZENE; CHELATES; COMPOUNDS; FILTERS; FLUORINATED HYDROCARBONS; HYDROCHLORIC ACID; IRRADIATION; KETONES; MIXING; NEUTRON BEAMS; NIOBIUM; NIOBIUM COMPOUNDS; NITRATES; ORES; ORGANIC FLUORINE COMPOUNDS; OXALIC ACID; PATENT; RARE EARTHS; SALTS; SEPARATION PROCESSES; SOLVENT EXTRACTION; SOLVENTS; URANIUM; YTTRIUM; YTTRIUM COMPOUNDS; ZIRCONIUM; ZIRCONIUM COMPOUNDS

Citation Formats

Crandall, H W, and Thomas, J R. SEPARATION PROCESS FOR ZIRCONIUM AND COMPOUNDS THEREOF. United States: N. p., 1959. Web.
Crandall, H W, & Thomas, J R. SEPARATION PROCESS FOR ZIRCONIUM AND COMPOUNDS THEREOF. United States.
Crandall, H W, and Thomas, J R. Tue . "SEPARATION PROCESS FOR ZIRCONIUM AND COMPOUNDS THEREOF". United States.
@article{osti_4206657,
title = {SEPARATION PROCESS FOR ZIRCONIUM AND COMPOUNDS THEREOF},
author = {Crandall, H W and Thomas, J R},
abstractNote = {The separation of zirconium from columbium, rare earths, yttrium and the alkaline earth metals, such mixtures of elements occurring in zirconium ores or neutron irradiated uranium is described. According to the invention a suitable separation of zirconium from a one normal acidic aqueous solution containing salts, nitrates for example, of tetravalent zirconium, pentavalent columbium, yttrium, rare earths in the trivalent state and alkaline earths can be obtained by contacting the aqueous solution with a fluorinated beta diketonc alone or in an organic solvent solution, such as benzene, to form a zirconium chelate compound. When the organic solvent is present the zirconium chelate compound is directly extracted; otherwise it is separated by filtration. The zirconium may be recovered from contacting the organic solvent solution containing the chelated compound by back extraction with either an aqueous hydrofluoric acid or an oxalic acid solution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {6}
}