REDUCTION OF FLUORIDE TO METAL
Patent
·
OSTI ID:4126643
A process is given for making yttrium metal by reducing yttrium fluoride with calcium plus magnesium. Calcium is added in an excess of from 10 to 20% and magnesium in a quantity to yield a magnesium--yttrium alloy containing from 12 to 25% magnesium when the reaction mass is heated in an inert atmosphere at from 900 to 1106 deg C, but preferably above the melting point of the alloy. Calcium chloride may be added so as to obtain a less viscous slag containing from 30 to 60% calcium chloride. After removal of the slag the alloy is vacuum-heated at about 1100 deg C for volatilization of the magnesium and calcium.
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-025878
- Assignee:
- U.S. Atomic Energy Commission
- Patent Number(s):
- US 2950962
- OSTI ID:
- 4126643
- Country of Publication:
- United States
- Language:
- English
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