Fused salt process for purifying zirconium and/or hafnium tetrachlorides
This patent describes a fused salt process for continuously purifying zirconium and/or hafnium tetrachloride dissolved in a molten bath in a vessel. It comprises: maintaining a mass of a suitable mixture of salts, including zirconium and/or hafnium tetrachloride; heating the mixture of salts to a temperature at or immediately below the vaporization temperature of the zirconium and/or hafnium tetrachloride at which temperature the mixture of salts is fused to form a molten, tetrachloride-dissolving bath; continuously introducing into the dissolving bath a zirconium and/or hafnium tetrachloride powder; heating a portion of the dissolving bath in situ to a temperature higher than the vaporization temperature of the zirconium and/or hafnium tetrachloride so as to vaporize the tetrachloride; internally circulating the dissolving bath whereby the portion of the dissolving bath at the high temperature circulate with the bath at the lower temperature.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- Patent Number(s):
- US 5009866; A
- Application Number:
- PPN: US 7-437152
- OSTI ID:
- 5226420
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method of purifying zirconium tetrachloride and hafnium tetrachloride in a vapor stream
FUSED-SALT SCRUBBING OF ZIRCONIUM TETRACHLORIDE
Related Subjects
360100 -- Metals & Alloys
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
CHEMICAL REACTORS
CHLORIDES
CHLORINE COMPOUNDS
DEGASSING
EVAPORATION
HAFNIUM CHLORIDES
HAFNIUM COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HEATING
PHASE TRANSFORMATIONS
PURIFICATION
REFRACTORY METAL COMPOUNDS
SALTS
SOLUTES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM CHLORIDES
ZIRCONIUM COMPOUNDS