Method for preparing high purity vanadium
Patent
·
OSTI ID:6123665
A method for preparing high purity vanadium having a low silicon content has been developed. Vanadium pentoxide is reduced with a stoichiometric, or slightly deficient amount of aluminum to produce a vanadium-aluminum alloy containing an excess of oxygen. Silicon is removed by electron-beam melting the alloy under oxidizing conditions to promote the formation of SiO which is volatile at elevated temperatures. Excess oxygen is removed by heating the alloy in the presence of calcium metal to form calcium oxide.
- DOE Contract Number:
- W-7405-ENG-82
- Assignee:
- Dept. of Energy
- Patent Number(s):
- None
- Application Number:
- ON: TI85006412
- OSTI ID:
- 6123665
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
ELECTRON BEAM MELTING
ELEMENTS
MELTING
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REDUCTION
REMOVAL
SEMIMETALS
SILICON
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM
VANADIUM COMPOUNDS
VANADIUM OXIDES
360101* -- Metals & Alloys-- Preparation & Fabrication
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
ELECTRON BEAM MELTING
ELEMENTS
MELTING
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REDUCTION
REMOVAL
SEMIMETALS
SILICON
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM
VANADIUM COMPOUNDS
VANADIUM OXIDES