Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1982-08-13
1984-04-17
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
75101BE, 210651, 210652, 4236585, C01G 3900, C01G 4100
Patent
active
044434146
ABSTRACT:
A method for the removal of molybdenum from solutions containing molybdenum and other mineral values such as tungsten is accomplished by mixing the leachate solution with hydrogen peroxide to form a feed solution; the feed solution is contacted with a porous membrane, the opposite side of which is continuously contacted with an organic solution containing tributylphosphate. Additionally, for recovery of molybdenum, the tributylphosphate solution is additionally contacted with a second membrane the opposite side of which is contacted with a stripping solution such as a solution of sodium hydroxide or sodium carbonate. In a continuous ion exchange embodiment, the organic solution containing tributylphosphate is recirculated to contact the second side of the first membrane, preferably after passage through an aqueous separator.
REFERENCES:
patent: 3957504 (1976-05-01), Ho et al.
patent: 3969478 (1976-07-01), Zelikman et al.
patent: 4051230 (1977-09-01), Miyauchi
patent: 4092117 (1978-05-01), Byrne
patent: 4275039 (1981-01-01), Ozensoy et al.
patent: 4306946 (1981-12-01), Kim
Carter Herbert T.
Cutter Lawrence D.
Davis Jr. James C.
General Electric Company
Snyder Marvin
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