Method of producing potassium magnesium phosphate

Details Method of producing potassium magnesium phosphate Method of producing potassium magnesium phosphate

1983-06-13

1985-08-20

Doll, John

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

71 41, C01B 2526

Patent

active

045363765

ABSTRACT:
Process for producing potassium magnesium phosphate by reacting basic magnesium compounds with phosphoric acid or phosphates in the presence of potassium sulfate from a mother liquor containing per 1000 g water up to 150 g magnesium sulfate and up to 120 g potassium sulfate. Precipitation forms with addition of calcium oxide or hydroxide equimolar to present magnesium sulfate and after phosphoric acid adjustment of the pH to 2-4, mechanical separation and addition of potassium sulfate and basic magnesium compounds, the desired product results.

REFERENCES:
patent: 4217333 (1980-08-01), Loblich

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