Incorporation of micronutrients in fertilizers

Claim 1

IN A PROCESS FOR INCORPORATING MICRONUTRIENT VALUES INTO MIXED FERTILIZERS, IN WHICH PROCESS THERE IS PRODUCED A SOLID HIGH-ANALYSIS MATERIAL FROM ANHYDROUS AMMONIA AND HIGHLY CONCENTRATED PHOSPHORIC ACID BY MAINTAINING IN A CLOSED REACTION VESSEL AT A TEMPERATURE IN THE RANGE OF ABOUT 300*F. TO ABOUT 500*F. AND UNDER A CONSTANT POSITIVE PRESSURE IN THE RANGE FROM ABOUT 10 P.S.I.G. TO ABOUT 1000 P.S.I.G. A MASS OF MOLTEN MATERIAL OF LOW VISCOSITY, PREVISOUSLY FORMED BY COMBINIG SAID ANHYDROUS AMMONIA AND SAID PHOSPHORIC ACID WITHIN SAID REACTION VESSEL; CONTINUOUSLY COMBINING RELATIVELY SMALL STREAMS OF SAID ANHYDROUS AMMONIA AND SAID HIGHLY CONCENTRATED PHOSPHORIC ACID INTO SAID MASS IN SAID CLOSED REACTION VESSEL; CONTINUOUSLY VIGOROUSLY AGITATING SAID MASS, THEREBY KEEPING SUBSTANTIALLY THE ENTIRE MASS WELL AGITATED AND CAUSING IMMEDIATE AMMONIATION OF SAID INFLOWING PHOSPHORIC ACID;AND WITHDRAWING FROM THE BOTTOM OF SAID MASS SURPLUS AMMONIUMN POLYPHOSPHATE MATERIAL AS PRODUCTS, THE IMPROVEMENT IN COMBINATION THEREWITH FOR INCORPORATING MICRONUTRIENT VALUES ULTIMATELY INTO SAID WITHDRAWN MOLTEN MATERIAL AND CONVERTING CERTAIN LATER-MENTIONED NORMALLY WATER-INSOLUBLE OXIDES CONTAINING MICRONUTRIENT VALUES TO WATER-SOLUBLE FORMS, WHICH IMPROVED PROCESS COMPRISES THE ADDITIONAL STEP OF INTRODUCINT INTO SAID SUPERPHOSPHORIC ACID PIOR TO ITS INTRODUCTION INTO SAID CLOSED REACTION VESSEL MICRONUTRIENT VALUES SELECTED FROM THE GROUP CONSISTING OF OXIDES OF IRON, COPPER, ZINC, AND MANGANESE, AND MIXTURES THEREOF; AND SAID IMPROVED PROCESS BEING CHARACTERIZED BY THE FACT THAT SAID NORMALLY WATER-INSOLUBLE MICRONUTRIENT SOURCES ARE CONVERTED TO A WATER-SOLUBLE FORM AND ARE RENDERED AVAILABLE TO THE GROWING PLANT.