Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Radioactive metal
Patent
1983-07-08
1986-05-06
Kyle, Deborah L.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Radioactive metal
423 17, 423 56, 423 67, C01G 4300, C01G 3902, C01G 3102
Patent
active
045871094
ABSTRACT:
The invention relates to a process for recovering and purifying the molybdenum from a solution containing more molybdenum than vanadium.
The process of the invention comprises the step of contacting the solution which contains molybdenum and vanadium, originally at a pH at least equal to 11 with an excess of an ammonium salt sufficient to precipitate the greatest part of vanadium in the form of solid ammonium vanadate, this excess being yet hot higher than a value such that after precipitation of vanadium, the quantity of ammonium having not reacted with the vanadate would be over a concentration which would account for risks of precipitating also molybdenum which is contained in the liquid phase of the supernatant.
The molybdenum which is obtained is of industrial grade.
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Lyaudet Georges
Vial Jean
Compagnie Generale des Matieres Nucleaires (Cogema)
Kyle Deborah L.
Thexton Matthew A.
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