STP824: New Process for Zirconium and Hafnium Separation

    Moulin, L
    Technical director, Jarrie plant manager, and process engineering manager, Companie Européene Du Zirconium, CEZUS, Paris,

    Thouvenin, P
    Technical director, Jarrie plant manager, and process engineering manager, Companie Européene Du Zirconium, CEZUS, Paris,

    Brun, P
    Technical director, Jarrie plant manager, and process engineering manager, Companie Européene Du Zirconium, CEZUS, Paris,

    Pages: 8    Published: Jan 1984


    Abstract

    The separation of hafnium and zirconium, required for nuclear use of zirconium, is generally performed by liquid-liquid extraction in organic solvents. The paper describes a new process based on extractive distillation of zirconium chloride (ZrCl4) and hafnium chloride (HfCl4) in a solvent made of molten potassium chloride-aluminum chloride (KCl-AlCl3) mixture above 350°C at atmospheric pressure. The corresponding process is now in full-scale industrial production.

    Keywords:

    hafnium separation, extractive distillation, pure zirconium tetrachloride, zirconium sponge


    Paper ID: STP34459S

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP34459S


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