Method for preparing alkali metal orthophosphates and...

Details Method for preparing alkali metal orthophosphates and... Method for preparing alkali metal orthophosphates and...

C - Chemistry, Metallurgy

01

B

23/217, 23/67

C01B 25/30 (2006.01) C01C 1/00 (2006.01) C01C 1/02 (2006.01)

Patent

CA 1053441

ABSTRACT A selected ammonium phosphate is reacted at elevated temperature and pressure with sodium hydroxide in a vertical column having vapor-liquid contact means to produce an alkali metal orthophosphate having a low alkali metal/P molar ratio which is substantially free of ammonia. Ammonia is taken overhead.

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