Production of monobasic potassium phosphate with low chloride co

Details Production of monobasic potassium phosphate with low chloride co Production of monobasic potassium phosphate with low chloride co

1988-09-06

1989-12-05

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423307, 423308, 71 34, C01B 1516, C01B 2526

Patent

active

048851485

ABSTRACT:
Relatively pure monopotassium phosphate is produced from wet process phosphoric acid in a process wherein the phosphoric acid is mixed with potassium chloride and recycled components from downstream product and by-product recovery steps and heated to permit hydrogen and chloride to evolve from the melt as gases and wherein the melt is subsequently treated so as to remove impurities so that the monopotassium phosphate may be recovered as a relatively pure crystalline product with low chloride content.

REFERENCES:
patent: 1456850 (1923-05-01), Hazen et al.
patent: 3547615 (1970-12-01), Beckham
patent: 3554729 (1971-01-01), Curless
patent: 3767770 (1973-10-01), Worthington et al.
patent: 3784367 (1974-01-01), Moore
patent: 4158558 (1979-06-01), Thompson et al.

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