Electrochemical decomposition of complexes of zirconium or hafnium

Patent · Tue Sep 12 00:00:00 EDT 1989

OSTI ID:5448586

Snyder, T S; Stoltz, R A; McLaughlin, D F

This patent describes an improvement in a method for separating hafnium from zirconium where a complex of zirconium and hafnium chlorides and phosphorus oxychloride is prepared from zirconium-hafnium chloride and the complex is subjected to a distillation to produce a hafnium chloride enriched stream of complex and a zirconium enriched chloride stream of complex. The improvement comprising: electrochemical breaking the zirconium or hafnium chloride complex from the distillation in a chloride or fluoride and chloride molten salt bath to produce the metal or a chloride oof zirconium or hafnium.

• Assignee: Westinghouse Electric Corp., Pittsburgh, PA
• Patent Number(s): US 4865694
• Application Number: PPN: US 7242571A
• OSTI ID: 5448586
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
DECOMPOSITION
DISTILLATION
ELECTROCHEMISTRY
HAFNIUM CHLORIDES
HAFNIUM COMPLEXES
HAFNIUM COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
PHOSPHORUS CHLORIDES
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
SEPARATION PROCESSES
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM CHLORIDES
ZIRCONIUM COMPLEXES
ZIRCONIUM COMPOUNDS