Multiple batch recovery of acid dissolved molybdenum

Details Multiple batch recovery of acid dissolved molybdenum Multiple batch recovery of acid dissolved molybdenum

1982-08-12

1983-05-03

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 58, 423593, 23301, C01G 3900

Patent

active

043820697

ABSTRACT:
Rapid recovery of molybdenum from an acid solution containing dissolved molybdenum is accomplished by using a multiple batch method. A first batch of ammonium molybdate precipitate is formed by diluting a first portion of acid with 1.5 times that volume of water, adding anhydrous ammonia, and seeding with ammonium molybdate particles while maintaining a temperature between 90.degree. C. and boiling. Subsequent batches of precipitate are formed by dissolving the previous precipitate in additional acid, similarly diluting as above, and adding anhydrous ammonia while maintaining temperature as above. All precipitates are coarse and fast settling.

REFERENCES:
patent: 1250063 (1917-12-01), Westling et al.
patent: 1948407 (1934-02-01), Watts
patent: 3393971 (1968-07-01), Vanderpool et al.
patent: 3963823 (1976-06-01), Kulkarni
patent: 4307065 (1981-12-01), Heytmeijer

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