Process for the purification of wet-process phosphoric acid by r

Details Process for the purification of wet-process phosphoric acid by r Process for the purification of wet-process phosphoric acid by r

1984-12-14

1987-01-06

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

423 10, 423101, 423321R, 423321S, 423DIG14, 75 2, 75101BE, 75121, 75108, 210688, C01G 1100, C01B 2518, C22B 1704

Patent

active

046345809

ABSTRACT:
A process for the removal of cadmium contained in wet-process phosphoric acid by flotation by means of a cadmium-collector anionic surface active agent and an injected gas in the presence of other impurities including iron and possibly uranium which is characterized in that, in order to improve the removal of cadmium, the iron contained in the phosphoric acid in the trivalent state is reduced to the divalent state before the cadmium collector is introduced into the medium to be purified by flotation.
The collector agent is selected from the group of dithiophosphoric acid esters and the alkali metal salts thereof.

REFERENCES:
patent: 4374805 (1983-02-01), Worthington et al.
patent: 4394360 (1983-07-01), Schrodter et al.
patent: 4452768 (1984-06-01), Gradl et al.
patent: 4457848 (1984-07-01), Schimmel et al.
patent: 4466948 (1984-08-01), Schimmel et al.
patent: 4503016 (1985-03-01), Schimmel et al.

Affiliated with

Also associated with

Rating

Process for the purification of wet-process phosphoric acid by r 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 the purification of wet-process phosphoric acid by r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the purification of wet-process phosphoric acid by r will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-683263