Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing
Patent
1975-01-10
1976-08-10
Vertiz, Oscar R.
Chemistry of inorganic compounds
Phosphorus or compound thereof
Oxygen containing
71 43, 423310, C01B 1516, C01B 2526
Patent
active
039742628
ABSTRACT:
The present invention relates to a two stage process for preparing ammonium phosphates in which ammonia at a comparatively low pressure and recovered from other processes is reacted with phosphoric acid in the liquid phase to yield an intermediate product which is then ammoniated further in the second stage under elevated pressure.
REFERENCES:
patent: 2902342 (1959-09-01), Kerley
patent: 2963359 (1960-12-01), Moore et al.
patent: 3310371 (1967-03-01), Lutz
patent: 3421847 (1969-01-01), Such et al.
patent: 3725210 (1973-04-01), Otsuka et al.
patent: 3824283 (1974-07-01), Harada et al.
Crerar John David
Hemsley John David Crowther
Fisons Limited
Heller Gregory A.
Vertiz Oscar R.
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