Production of alkali metal phosphate solutions free from zinc

Details Production of alkali metal phosphate solutions free from zinc Production of alkali metal phosphate solutions free from zinc

1979-12-17

1981-11-10

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423309, 423312, 423313, C01B 2530

Patent

active

042998034

ABSTRACT:
The invention relates to the production of alkali metal phosphate solutions free of zinc, from phosphoric acid solutions contaminated with zinc. To this end, feed solution is admixed with alkali metal hydroxide or carbonate so as to establish in the resulting suspension a pH-value within the range 8 to 14. Next, resulting suspension is reacted under pressure and with thorough agitation with H.sub.2 S or an alkali metal sulfide solution; and decontaminated alkali metal phosphate solution is separated from solid matter, the pressure being maintained.

REFERENCES:
patent: 2162657 (1939-06-01), Wehrstein
patent: 2977191 (1961-03-01), Pottiez
patent: 3305305 (1967-02-01), Peterson et al.
patent: 3421845 (1969-01-01), Peterson
patent: 3421846 (1969-01-01), Miller
patent: 4134962 (1979-01-01), Ehlers et al.

Affiliated with

Also associated with

Rating

Production of alkali metal phosphate solutions free from zinc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production of alkali metal phosphate solutions free from zinc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of alkali metal phosphate solutions free from zinc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2362332