Method of preventing gypsum scale formation in phosphoric acid p

Details Method of preventing gypsum scale formation in phosphoric acid p Method of preventing gypsum scale formation in phosphoric acid p

1973-10-25

1976-08-03

Vertiz, Oscar R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423555, C01B 2516

Patent

active

039729818

ABSTRACT:
The anti-scaling effect of additives added to control the formation of scale during the washing of calcium sulphate anhydrite or hemihydrate crystals is increased when the additives are added as soon as possible after the wash liquors leave the crystals. The invention is of especial use in the washing of calcium sulphate hemihydrate produced during the production of phosphoric acid and is carried out by adding the additives via the central valve of the rotating pan filter on which the hemihydrate crystals are washed.

REFERENCES:
patent: 2448218 (1948-08-01), Haddon
patent: 2968528 (1961-01-01), Tuttle et al.
patent: 3192014 (1965-06-01), Leyshon et al.
patent: 3238142 (1966-03-01), Perry et al.
patent: 3397956 (1968-08-01), Buchanan et al.
patent: 3410655 (1968-11-01), Ruter et al.
patent: 3554694 (1971-01-01), Barker et al.
patent: 3594123 (1971-07-01), Encke et al.
patent: 3598755 (1971-08-01), McBroom et al.
patent: 3645677 (1972-02-01), Akazawa et al.
patent: 3714330 (1973-01-01), Barker
patent: 3764655 (1973-10-01), Ehlers et al.
patent: 3796790 (1974-03-01), Sirianni et al.
Hydrocarbon Processing Magazine, Sept. 1972, p. 314.

Affiliated with

Also associated with

Rating

Method of preventing gypsum scale formation in phosphoric acid p does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of preventing gypsum scale formation in phosphoric acid p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preventing gypsum scale formation in phosphoric acid p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1929700