Process for separation of tungsten and molybdenum by extraction

Details Process for separation of tungsten and molybdenum by extraction Process for separation of tungsten and molybdenum by extraction

1975-01-30

1976-07-13

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

75101BE, B01D 1100, B01J 104, C01G 3700, C01G 3900

Patent

active

039694780

ABSTRACT:
A process for the separation of tungsten and molybdenum by extraction involves the addition to an aqueous solution containing tungsten and molybdenum nitric or hydrochloric acid to obtain a pH from 0.5 to 4.3, introduction of a stabilizer comprising water-soluble phosphorus salts and a complexing agent - hydrogen peroxide in an amount from 1.5 to 2 mol per 1 g-atom of the total content of tungsten and molybdenum. Then molybdenum is selectively extracted from the resulting aqueous solution with tri-n-butylphosphate with equal volumetric proportioning of the aqueous and organic solutions. Re-extraction of molybdenum and partially tungsten is carried out from the organic extracting agent with an alkali or soda solution.
The process makes possible the preparation of tungsten solution containing no more than 0.001 g/l of molybdenum, and an increase in the degree of extraction of tungsten and molybdenum.

REFERENCES:
patent: 2968527 (1961-01-01), Baker
patent: 3079226 (1963-02-01), Newkirk
patent: 3450639 (1969-06-01), Maria et al.
patent: 3576595 (1971-04-01), Chiols et al.

Affiliated with

Also associated with

Rating

Process for separation of tungsten and molybdenum by extraction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for separation of tungsten and molybdenum by extraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for separation of tungsten and molybdenum by extraction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1740178