Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1980-06-12
1981-09-08
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
75101BE, 423DIG14, C01G 4100
Patent
active
042884136
ABSTRACT:
The process is described wherein molybdenum values are separated from an aqueous solution containing tungsten. The molybdenum is converted to a thiomolybdate ion and the resulting solution is contacted with a suitable amount of organic extractant for a sufficient period of time to preferentially extract the thiomolybdate. The organic extractant including the thiomolybdate is separated from the aqueous solution comprising the unextracted tungsten values. The molybdenum values are stripped from the separated organic extractant by contacting with an aqueous solution containing sufficient amount of an oxidizing agent suitable for oxidizing the thiomolybdate complex ion to the molybdate ion which in turn is soluble in the aqueous solution. The organic extractant is then recycled for extracting the thiomolybdate complex ion and the molybdate ion may be recovered from the aqueous solution by conventional methods.
REFERENCES:
patent: 3158438 (1964-11-01), Kurtak
patent: 3804941 (1974-04-01), Coad et al.
patent: 3806580 (1974-04-01), Bradford et al.
patent: 4115513 (1978-09-01), Kulkami et al.
Kim Tai K.
MacInnis Martin B.
Carter Herbert T.
GTE Products Corporation
Walter Robert E.
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