Potassium polyphosphate fertilizers

Details Potassium polyphosphate fertilizers Potassium polyphosphate fertilizers

1978-03-28

1979-06-19

Spitzer, Robert H.

Chemistry: fertilizers

Processes and products

Inorganic material

71 36, 71 41, 71 47, 71 64C, C05B 106

Patent

active

041585585

ABSTRACT:
A process for the production of a potassium polyphosphate liquid fertilizer in which potassium chloride is reacted with phosphoric acid or polyphosphoric acid in a specific molar ratio, steam, air or other inert gas being blown through the reaction mixture to facilitate removal of hydrochloric acid. The reaction product is dissolved in water or a weak solution, of a liquid ferilizer, the pH adjusted and the resulting solution or slurry is suitable for direct use as a solution fertilizer.

REFERENCES:
patent: 1456831 (1923-05-01), Ross et al.
patent: 3347656 (1967-10-01), Potts et al.
patent: 3455649 (1969-07-01), Bigot
patent: 3547615 (1970-12-01), Backham
patent: 3554729 (1971-01-01), Curless
patent: 3607213 (1971-09-01), Jerzy et al.
patent: 3697246 (1972-10-01), Drechsel et al.
patent: 3784367 (1974-01-01), Moore
E. V. Brizke et al., Journal of Chemical Industry, 1930.

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