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US 4,374,809 AGranted
Process for the separation of molybdenum values from tungsten values
AssigneeGTE Laboratories Incorporated
InventorsMark S. Chagnon, Joseph E. Lester, Samuel Natansohn
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Abstract
Molybdenum is removed from an aqueous solution containing tungsten and molybdenum by extracting the molybdenum from the aqueous solution having a pH greater than 8.5 with a liquid organic extractant containing a preferred complexing agent, 3,4-dimercaptotoluene.
Claims18
A process for removing molybdenum values from an aqueous solution containing tungsten values and molybdenum values, said aqueous solution being at a pH greater than 8.5, said process comprising:
- contacting said aqueous solution with an extractant comprising
- a mercaptoaromatic complexing agent having two mercapto groups at ortho positions to each other, and
- an organic solvent;
- the contacting of the aqueous solution with the extractant taking place for a sufficient amount of time to extract a portion of said molybdenum values without extracting an appreciable portion of said tungsten values.
1 more element
Dependencies are inferred from the claim text.