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Title: Process for preparing medium density granular sodium tripolyphosphate

Abstract: Finely divided sodium tripolyphosphate (STPP) particles are sprayed with a solution of sodium orthophosphate to prepare an agglomerated feed material which is then calcined at 300.degree. to 600.degree.C to produce granular STPP of medium range bulk density.


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Inventors: Pals, Raimond (Farmingdale, NJ, US)
Fuchs, Robert J. (Clark, NJ, US)
Schwartz, John C. (Green River, WY, US)

Application Number: 459256
Filing Date: 1974-04-08
Publication_date: 1976-01-13
Assignee: FMC Corporation (Philadelphia, PA)
Primary Class(es): 423/315
Other Classes:
US Patent Ref:
3210154Oct, 1965Klein et al.423/315.
3382036May, 1968Post et al.423/315.
3761573Sep, 1973Hinz et al.423/315.

Other Refs:
Primary Examiner: Vertiz, Oscar R.
Assistant Examiner: Heller, Gregory A.
Attorney: