New process for the separation of hafnium from zirconium

Journal Article · Thu Sep 01 04:00:00 EDT 1977 · Metall. Trans., B; (United States)

DOI:https://doi.org/10.1007/BF02696924· OSTI ID:6514554

Flengas, S N ^[1]; Dutrizac, J E

---

1. Univ. of Toronto, Ontario

A new process for the separation of hafnium from zirconium has been developed, based on the repeated reaction of the mixed tetrachloride vapors of zirconium and hafnium with alkali metal chloride salts in a solid form. Hafnium tends to remain in the condensed phase while zirconium concentrates in the vapor phase. This process has been investigated experimentally as a function of the alkali chloride salt, the number of reaction steps, and the mass ratio of vapor-to-condensed phases. The mechanism of the separation process is discussed in terms of thermodynamic considerations and the calculation of the theoretical separation efficiency is in agreement with the experimental results.

• OSTI ID: 6514554
• Journal Information: Metall. Trans., B; (United States), Journal Name: Metall. Trans., B; (United States) Vol. 8:3; ISSN MTTBC
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALKALI METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTS
HAFNIUM
HAFNIUM CHLORIDES
HAFNIUM COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
METALS
REFRACTORY METALS
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZIRCONIUM
ZIRCONIUM CHLORIDES
ZIRCONIUM COMPOUNDS