Preparation of granular sodium tripolyphosphate products from sc

Details Preparation of granular sodium tripolyphosphate products from sc Preparation of granular sodium tripolyphosphate products from sc

1979-01-02

1981-02-17

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423305, C01B 1516, C01B 2526

Patent

active

042514983

ABSTRACT:
Screen undersize sodium tripolyphosphate (STPP) particles are compacted, milled and moisturized by adding a sufficient amount of water thereon to produce a material containing on the average between about 15% and about 35% by weight moisture. The moisturized material is calcined to a temperature within the range of from about 300.degree. to about 600.degree. C., to produce a granular STPP product having a low friability, high absorptivity, and a bulk density within the range of from about 0.65 to about 0.87 g/cc.

REFERENCES:
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patent: 3356447 (1967-12-01), Tafler et al.
patent: 3384452 (1968-05-01), Heymer et al.
patent: 3469938 (1969-09-01), McLeod et al.
patent: 3672826 (1972-06-01), Hornig et al.
patent: 3761573 (1973-09-01), Hinz et al.
patent: 3932590 (1976-01-01), Pals et al.
patent: 4134963 (1979-01-01), Pals

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