Process of removing cationic impurities from wet process...

Details Process of removing cationic impurities from wet process... Process of removing cationic impurities from wet process...

C - Chemistry, Metallurgy

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B

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C01B 25/238 (2006.01) C01B 25/237 (2006.01) C01B 25/28 (2006.01)

Patent

CA 1261116

PROCESS REMOVING IMPURITIES FROM WET PROCESS PHOSPHORIC ACID ABSTRACT OF THE DISCLOSURE A method of removing aluminum, magnesium, iron and other impurities from wet process phosphoric acid is provided. The method comprises partially ammoniating the acid and reacting the acid with a fluoride ion donating compound to precipitate aluminum- and magnesium-containing ralstonite and ammonium fluorosilicate which can be easily separated from the acid thereby producing a partially ammo- niated wet process phosphoric acid of reduced impurities content.

520195

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