Production of granular alkali metal diphosphates or triphosphate

Details Production of granular alkali metal diphosphates or triphosphate Production of granular alkali metal diphosphates or triphosphate

1981-09-17

1983-07-19

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423315, C01B 2530

Patent

active

043943586

ABSTRACT:
The invention relates to a process for making granulated, partially or completely hydrated alkali metal diphosphates or triphosphates. To this end, the invention provides for alkali metal diphosphates or triphosphates which consist to an extent of at least 20% of particles with a size of less than 0.045 mm and are hydrated to an extent of less than 90%, based on the phosphates' theoretical content of water of hydration, to be intensively mixed and granulated in the presence of water and an ammonium polyphosphate, this latter being used in a proportion of about 0.5 to 50 weight %, based on the quantity of water used.

REFERENCES:
patent: 2419148 (1947-04-01), King
patent: 2568110 (1951-09-01), Beiley et al.
patent: 3233967 (1966-02-01), Shen
patent: 3761573 (1973-09-01), Hinz et al.
patent: 3911086 (1975-10-01), Sheridan et al.
patent: 3978195 (1976-08-01), Schrodter
patent: 4008065 (1977-02-01), Hauschild
patent: 4009137 (1977-02-01), Dany et al.

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