Production of stabilized wet process phosphoric acid

Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing

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71 32, C01B 2516

Patent

active

041645502

ABSTRACT:
Treatment of wet process phosphoric acid to inhibit post-precipitation by steps including addition of an aluminum silicate material such as perlite or the like to dilute acid from which a major portion of solids has been removed, concentration of the resulting dilute acid, and removal of resulting precipitate.

REFERENCES:
patent: 4110422 (1978-08-01), Hill

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