C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 25/00 (2006.01) B01D 59/30 (2006.01) G01N 30/58 (2006.01)
Patent
CA 2053041
The thermal neutron capture cross-section of zirconium may be altered by altering its natural isotope distribution through a steady state chromatographic separation of these isotopes using an anion exchange resin as the stationary phase of the chromatographic column. Zirconium is dissolved in a very strong acid which causes the formation of a zirconium anion, such as the ZrOCl4 -2 anion formed in six normal hydrochloric acid, and eluted off the column with a weaker acid. Distinct elution volumes representative of each isotope are collected. In a preferred embodiment, the process also separates the zirconium from hafnium and the other impurities normally present in the product obtained by chlorinating zircon sand and utilizes a continuous annular chromatograph.
Lahoda Edward Jean
Lee Ernest Dewitt
Skriba Michael Charles
Snyder Thomas Stephen
Bereskin & Parr
Westinghouse Electric Corporation
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