Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing
Patent
1986-05-30
1988-11-01
Heller, Gregory A.
Chemistry of inorganic compounds
Phosphorus or compound thereof
Oxygen containing
423309, 423310, C01B 2516
Patent
active
047819057
ABSTRACT:
A process is developed for producing phosphoric acid and phosphates from wet-process phosphoric acid. The crude acid is extracted with a waterimmiscible solvent mixture consisting of mixed trialkyl phosphine oxide and a diluent, wherein about 2/3 P.sub.2 O.sub.5 in the crude acid is extracted into solvent mixture and the balance remains in the raffinate. Pure phosphoric acid or phosphates are produced by stripping the loaded solvent with appropriate aqueous phase and secondary calcium phosphate fertilizer is obtained by neutralizing the raffinate with calcium carbonate.
REFERENCES:
patent: 4279876 (1986-07-01), Schrodter et al.
Niitsu et al., J. Inorg. Nucl. Chem. 1976, vol. 38, pp. 1054-1056 "Extraction of Phosphoric Acid From Various Aqueous Solutions with Trioctylphosphine Oxide".
Yu-Ming Jiang
Yuan-Fu Su
LandOfFree
Process for producing phosphoric acid and/or phosphates from wet 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 producing phosphoric acid and/or phosphates from wet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing phosphoric acid and/or phosphates from wet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-889979