Process for purifying zirconium sponge
Patent
·
OSTI ID:5226550
This patent describes a Kroll reduction process wherein a zirconium sponge contaminated with unreacted magnesium and by-product magnesium chloride is produced as a regulus, a process for purifying the zirconium sponge. It comprises: distilling magnesium and magnesium chloride from: a regulus containing a zirconium sponge and magnesium and magnesium chloride at a temperature above about 800{degrees} C and at an absolute pressure less than about 10 mmHg in a distillation vessel to purify the zirconium sponge; condensing the magnesium and the magnesium chloride distilled from the zirconium sponge in a condenser; and then backfilling the vessel containing the zirconium sponge and the condenser containing the magnesium and the magnesium chloride with a gas; recirculating the gas between the vessel and the condenser to cool the zirconium sponge from above about 800{degrees} C to below about 300{degrees} C; and cooling the recirculating gas in the condenser containing the condensed magnesium and the condensed magnesium chloride as the gas cools the zirconium sponge to below about 300{degrees} C.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- Patent Number(s):
- US 5100465; A
- Application Number:
- PPN: US 7-632783
- OSTI ID:
- 5226550
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BY-PRODUCTS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CONTAMINATION
COOLING
DISTILLATION
ELEMENTS
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
KROLL PROCESS
MAGNESIUM
MAGNESIUM CHLORIDES
MAGNESIUM COMPOUNDS
METALS
PRESSURE DEPENDENCE
PURIFICATION
REDUCTION
SEPARATION PROCESSES
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENTS
VAPOR CONDENSATION
ZIRCONIUM
400105* -- Separation Procedures
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BY-PRODUCTS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CONTAMINATION
COOLING
DISTILLATION
ELEMENTS
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
KROLL PROCESS
MAGNESIUM
MAGNESIUM CHLORIDES
MAGNESIUM COMPOUNDS
METALS
PRESSURE DEPENDENCE
PURIFICATION
REDUCTION
SEPARATION PROCESSES
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENTS
VAPOR CONDENSATION
ZIRCONIUM