FIELD: industry inorganic synthesis.
SUBSTANCE: purified phosphoric acid is obtained from ammonium phosphate solution involving ion-exchange procedure. Process comprises sorption of ammonium ions from ammonium phosphate solution by feeding the latter to sorption column under cationite bed and withdrawing purified phosphoric acid from column at the site where dehydrated and swelled cationite beds come into contact with each other on achievement of volume ratio 1:(5-10), respectively.
EFFECT: reduced loss of valuable components and over-consumption of reagents caused by nonuniformity in hydrodynamic distribution of processed solution stream.
1 tbl, 2 ex
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