Process for preparing alkali metal phosphate

Details Process for preparing alkali metal phosphate Process for preparing alkali metal phosphate

1986-05-08

1988-06-14

McFarlane, A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423181, 423202, 423208, 423321S, C01B 25163

Patent

active

047510668

ABSTRACT:
Alkali metal phosphates are recovered from a water immiscible solvent solution of aqueous wet process phosphoric acid by neutralizing the acid with a basic alkali metal salt in a ratio of alkali metal to phosphorus of 1 to 3.5 to form at least the mono alkali metal phosphate. The solvent is given a water wash to recover entrained alkali metal phosphates. The resulting aqueous solution aforesaid and wash liquor containing the alkali metal salts are separated from the stripped solvent.

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