Clarification of ammonium polyphosphate solutions

Details Clarification of ammonium polyphosphate solutions Clarification of ammonium polyphosphate solutions

1978-10-13

1982-10-19

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

71 36, 210734, 210735, 423305, B01D 2101

Patent

active

043549438

ABSTRACT:
Suspended black carbonaceous material contained in aqueous ammonium polyphosphate solutions, which are derived from impure wet-process phosphoric acid, is removed by mixing such a solution with ionic, water soluble, high polymers having a molecular weight in excess of one million, holding the mixture until the suspended material flocculates and floats to the surface, and separating the flocculated carbonaceous material from the resulting clarified ammonium polyphosphate solution.

REFERENCES:
patent: 2936888 (1960-05-01), Williams
patent: 2968528 (1961-01-01), Tuttle et al.
patent: 3129170 (1964-04-01), Ittinger
patent: 3288707 (1966-11-01), Hurwitz et al.
patent: 3377274 (1968-04-01), Burke et al.
patent: 3617568 (1971-11-01), Ries, Jr.
patent: 3630711 (1971-12-01), Burkert et al.
patent: 3644091 (1972-02-01), Naschke et al.
patent: 3969483 (1976-07-01), Stinson et al.

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