Process for removing dissolved silica from extracted phosphoric

Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing

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423321S, C01B 2516

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active

041698819

ABSTRACT:
A method of purifying extracted phosphoric acid containing substantially no metallic impurities which comprises:

REFERENCES:
patent: 2123785 (1938-07-01), Knox et al.
patent: 2132349 (1938-10-01), Booth
patent: 3193351 (1965-07-01), Miller et al.
patent: 3278277 (1966-10-01), Goren
patent: 3366448 (1968-01-01), Martin et al.
patent: 3454493 (1969-07-01), Kun et al.
patent: 3615195 (1971-10-01), Bierman et al.
patent: 3907680 (1975-09-01), Hill

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