Process for recovering phosphate values from precipitates formed

Details Process for recovering phosphate values from precipitates formed Process for recovering phosphate values from precipitates formed

1982-10-25

1984-01-31

Meros, Edward J.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423122, 423167, 423305, 423308, 423315, C01B 2530

Patent

active

044289154

ABSTRACT:
Disclosed is a process for recovering phosphate (P.sub.2 O.sub.5) values from solid iron- and aluminum-containing precipitates (muds) formed during the neutralization of impure wet process phosphoric acid with one or more sodium compounds, comprisig:

REFERENCES:
patent: 453300 (1891-06-01), Glaser
patent: 1929443 (1933-10-01), Milligan
patent: 3118730 (1964-01-01), Nickerson
patent: 3545920 (1970-12-01), George et al.
patent: 3862298 (1975-01-01), Beltz et al.
patent: 4053564 (1977-10-01), Bradford
Chemical Abstracts 74(6), 27608v.
Chemical Abstracts 77(4), 25452b.
Kirk-Othmer; Encyclopedia of Chemical Technology, Third Edition, vol. 5, "Chelating Agents", pp. 339-368. (1979).
Noyes, Robert; Phosphoric Acid by the Wet Process, 1967, Noyes Development Corporation, p. 240.

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