Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ivb metal
Patent
1995-07-17
1997-04-08
Bos, Steven
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ivb metal
423 73, C01G 2500, C01G 2700
Patent
active
056185022
ABSTRACT:
A method and system for improved continuous ion exchange chromatographic elemental separations of zirconium and hafnium and also for isotopic separations thereof from crude zirconium minerals by using zirconium (also containing hafnium) sulfate feedstock solutions, sulfate eluant solutions, anionic exchange resins, and reduced ion exchange column operating temperatures. The method and system of the invention provides sulfate feedstock solutions by completely converting the carbochlorination products of zircon sand to sulfate solutions prior to feeding to the ion exchange chromatographic column. The method and system of the invention is performed in a continuously operating continuous annular chromatograph (CAC). Nuclear grade substantially purified zirconium and hafnium metals are produced.
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Beleski Richard J.
Byers Charles H.
Francis Timothy L.
Nayak Umesh P.
Sisson Warren G.
Bos Steven
Westinghouse Electric Corporation
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