Plant food manufacture

Claim 1

A CONTINOUS COUNTERCURRENT PROCESS FOR THE MANUFACTURE OF MIXED PHOSPHATIC FERTILIZER, WHICH COMPRISES CHARGING FERTILIZER SOLIDS MATERIAL CONTAINING ACIDIC FERTILIIZER INGRIDIENTS INTO A FIRST REACTION ZONE, REACTING SAID FERTILIZER SOLIDS IN SAID FIRST REACTION ZONE TO FORM REACTION VAPORS FROM A SECOND REACTION ZONE TO FORM REACTION PRODUCTS THEREBY INCREASING THE NITROGEN CONTENT OF SAID FERTILIZER INGRIDIENTS,PASSING THE FERTILIZER MATERIAL INCLUDING SAID REACTION PRODUCTS TO SAID SECOND REACTION ZONE, CHARGING LIQUID ANHDROUS AMMONIA TO SAID SECOND REACTION ZONE,CONTACTING THE FERTILIZER MFATERIAL WITH LIQUID ANHYDROUS AMMONIA IN SAID SECOND REACTION ZONE TO COOL THE REACTION PRODUCTS AND TO VAPORIZE THE AMMONIA, PASSING THE VAPORIZED AMMONIA FROM SAID SECOND REACTION ZONE TO SAID FIRST REACTION ZONE, AND DISCHARGING COOLED MIXED FERTILIZER FROM SAID SECOND REACTION ZONE.