Process for the production of potassium magnesium phosphate

Details Process for the production of potassium magnesium phosphate Process for the production of potassium magnesium phosphate

1979-07-17

1980-08-12

Langel, Wayne A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

71 41, C01B 2526

Patent

active

042173337

ABSTRACT:
A process for producing potassium magnesium phosphate from phosphoric acid, potassium chloride and magnesium oxide, carbonated or like alkaline magnesium compound, which comprises adding the magnesium compound to an aqueous solution of the phosphoric acid or the acidic soluble phosphate salt and an amount of potassium chloride in excess of that theoretically required, in an amount and at a rate such that the pH is maintained below 9 and a high ratio of potassium chloride to magnesium chloride is maintained in the reaction mixture, whereby the formation of tribasic magnesium phosphate is suppressed.

REFERENCES:
patent: 3466161 (1969-09-01), Perlmutter et al.
patent: 3615186 (1971-10-01), Jahn-Held

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