Process for making condensed aluminum phosphates

Details Process for making condensed aluminum phosphates Process for making condensed aluminum phosphates

1973-06-18

1976-03-09

Carter, Herbert T.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

106 74, 106 84, C01B 1516, C01B 2526

Patent

active

039432319

ABSTRACT:
The invention provides condensed aluminum phosphates which contain P.sub.2 O.sub.5 and Al.sub.2 O.sub.3 in a molar ratio equal to or greater than 1.5:1, are X-ray amorphous and have an apparent density between 50 and 200 grams/liter.
They are made by spray-drying an aluminum orthophosphate solution or suspension containing P.sub.2 O.sub.5 and Al.sub.2 O.sub.3 in the molar ratio desired in the final product, in a spray tower at temperatures higher thana 250.degree.C to effect direct transformation into condensed aluminum phosphates.

REFERENCES:
patent: 2898189 (1959-08-01), Rodis
patent: 3445257 (1969-05-01), Hloch et al.
patent: 3607019 (1971-09-01), Herink

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