Method of removing and crystallizing cation resin absorbed calci

Details Method of removing and crystallizing cation resin absorbed calci Method of removing and crystallizing cation resin absorbed calci

1990-05-17

1991-06-04

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

210669, 210677, 210687, C08J 520, B01J 4900

Patent

active

050212168

ABSTRACT:
An improved method is provided for regenerating cation exchange resin loaded with metal ion impurities from wet process phosphoric acid. A regenerant solution is used composed of a mixture of ammonium sulfate and sulfuric acid in predetermined proportions which are maintained during recycle of the regenerant. This solution is preferably formed from anhydrous ammonia and sulfuric acid. Calcium and magnesium sulfates are selectively crystallized from the regenerant solution in the form of readily filterable crystals.

REFERENCES:
patent: 4363880 (1982-12-01), Whitney
patent: 4385993 (1983-05-01), Hedrick et al.
patent: 4493907 (1985-01-01), Hedrick et al.
patent: 4652352 (1987-03-01), Saieva
patent: 4721519 (1988-01-01), Thomas et al.
patent: 4861490 (1989-08-01), Morris
"industrial Scale-Up of a Phosphoric Acid Purification Process", by James E. Van Wyk, Nov. 11, 1986, American Institute of Chemical Engineers.

Affiliated with

Also associated with

Rating

Method of removing and crystallizing cation resin absorbed calci 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 removing and crystallizing cation resin absorbed calci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of removing and crystallizing cation resin absorbed calci will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1025173