Chemistry: fertilizers – Processes and products – Inorganic material
Patent
1977-07-18
1979-01-02
Schor, Kenneth M.
Chemistry: fertilizers
Processes and products
Inorganic material
71 36, 71 43, 423309, 423310, 423313, 423321S, C05B 700, C05B 1104
Patent
active
041325400
ABSTRACT:
When crude wet process phosphoric acid is solvent extracted, an aqueous raffinate containing phosphoric acid and a small amount of solvent is produced as a by-product. Certain materials are added to the raffinate, in order to produce two phases, one aqueous and the other of solvent. The phases are separated, the solvent recycled for reuse in a solvent extraction process and the aqueous phase treated with ammonia or alkali or alkaline earth metal compounds to form a fertilizer or other phosphate salt.
REFERENCES:
patent: 3019099 (1962-01-01), Walters
patent: 3298782 (1967-01-01), Olivier
patent: 3367738 (1968-02-01), Schallert et al.
patent: 3556739 (1971-01-01), Bariel et al.
patent: 3707357 (1972-12-01), Chiang
patent: 3813233 (1974-05-01), Kendrick
patent: 3872215 (1975-03-01), Cherdron et al.
patent: 3903247 (1975-09-01), Blumberg et al.
patent: 3914382 (1975-10-01), Williams
patent: 3926610 (1975-12-01), Kenton
patent: 3937783 (1976-02-01), Wamser et al.
patent: 3956465 (1976-05-01), Amanrich
patent: 3975178 (1976-08-01), McCullough et al.
patent: 3985538 (1976-10-01), Hicks et al.
patent: 3988140 (1976-10-01), Burns et al.
patent: 3993733 (1976-11-01), Irani
patent: 4008314 (1977-02-01), Davidson
patent: 4024225 (1977-05-01), Chiang
Edwards Robert H.
Williams Thomas A.
Albright & Wilson Limited
Schor Kenneth M.
LandOfFree
Process for removing solvent from the raffinate of extracted pho 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 removing solvent from the raffinate of extracted pho, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for removing solvent from the raffinate of extracted pho will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1515626