Process for the separate recovery of vanadium and molybdenum
AssigneeAkzona Incorporated
InventorsWilhelmus Pannekeet, Gerhard E. W. K. Steenken, Roeland H. Voogd
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Abstract
A process of separately recovering vanadium and molybdenum from an aqueous solution containing a vanadium compound is disclosed. The process comprises adjusting the pH of such a solution to a pH between 1.5 and 7, contacting the solution with a weakly basic anion exchanger in the salt form, eluting said anion exchanger with an ammonium hydroxide solution having a strength between about 1 and 4N, crystallizing the resulting ammonium vanadate, and separating the same from the vanadium and molybdenum solution obtained in said elution.
Claims8
A process of separately recovering vanadium and molybdenum from an aqueous solution containing a vanadium compound and a molybdenum compound, comprising the steps of:
- a. adjusting the pH of said aqueous vanadium-and-molybdenum-containing solution to a value between 1.5 and 7;
- b. contacting said solution with a weakly basic anion exchanger in the salt form;
- c. eluting said anion exchanger with an ammonium hydroxide solution having a strength between about 1 and 4N;
- and
- d. crystallizing the resulting ammonium vanadate and separating same from the vanadium-and molybdenum solution obtained in said elution.
Dependencies are inferred from the claim text.