Process for separation of zirconium from hafnium

Details Process for separation of zirconium from hafnium Process for separation of zirconium from hafnium

1983-10-21

1986-03-25

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

2041575, B01J 1912

Patent

active

045781656

ABSTRACT:
A process for the separation of zirconium values from hafnium values wherein a solution of a zirconium chelate complex and a hafnium chelate complex, each having a common ligand, is irradiated with light, of a wavelength between 300 nm and 700 nm, in the presence of a scavenger, such that one of the metal chelate complexes is excited and reacts with the scavenger to form a reaction product that is separated from the solution while the other of the metal chelate complex remains stable and is retained in the solution.

REFERENCES:
patent: 3069232 (1962-12-01), Greenberg et al.
patent: 3127236 (1964-03-01), Peters
patent: 4389292 (1983-06-01), Phillips et al.
J. H. Schemel, "ASTM Manual on Zirconium and Hafnium", ASTM Special Technical Publication 639, (1977) pp. 3-10, 20, 56-59.
Minkler et al., "The Production of Titanium Zirconium and Hafnium", Metallurgical Treatises, ed. by Tien et al., Metallurgical Society of AIME (1981) pp. 182-185.
Lustman et al., "Metallurgy of Zirconium", McGraw Hill Book Company (1955) pp. 14, 15.
Tipton, "Reactor Handbook, vol. I Materials", Interscience Publishers (1960) pp. 777, 778.

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