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Process for recovering molybdenum from solution in a form that is substantially free from vanadium

Patent ·
OSTI ID:5952230
A process is described for recovering molybdenum in a purified form substantially free from vanadium impurities, the process comprises: (a) crystallizing vanadium from a solution having a mixture of vanadium and molybdenum; (b) extracting molybdenum from the remaining solution of molybdenum with an organic solvent; (c) stripping the extracted molybdenum with an aqueous solvent; (d) heating the aqueous solution from step (c) between 40/sup 0/C and 80/sup 0/C; (e) adjusting the pH of the heated solution to between 5.5 and 8.5 to precipitate impurities; and adjusting the pH of the heated solution to between 1.5 and 3.0 to precipitate molybdenum as ammonium octamolybdate; whereby the molybdenum precipitate is substantially free of vanadium.
Assignee:
Chevron Research Co., San Francisco, CA
Patent Number(s):
US 4814149
OSTI ID:
5952230
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
DEMETALLIZATION
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
IMPURITIES
METALS
MIXTURES
MOLYBDATES
MOLYBDENUM
MOLYBDENUM COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
REFRACTORY METAL COMPOUNDS
SEPARATION PROCESSES
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM