Method for purifying molybdenum

Details Method for purifying molybdenum Method for purifying molybdenum

1987-07-20

1988-02-09

Lechert, Jr., Stephen J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423593, 423606, C01G 3700

Patent

active

047241284

ABSTRACT:
A method is disclosed for purifying molybdenum which involves reducing a molybdenum compound selected from the group consisting of molybdenum trioxide, ammonium dimolybdate, and ammonium paramolybdate to molybdenum dioxide which is then water washed to remove potassium, and produce a purified molybdenum dioxide having a potassium content of no greater than about 30 weight ppm, followed by separating the wash water from the purified molybdenum dioxide.

REFERENCES:
patent: 3932580 (1976-01-01), Vertes et al.
patent: 3991156 (1976-11-01), Ronzio et al.
patent: 4587109 (1986-05-01), Lyavdet et al.
patent: 4596701 (1986-06-01), Cheresnowsky et al.
patent: 4612172 (1986-09-01), Brunelli et al.
patent: 4643884 (1987-02-01), Cheresnowsky et al.

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