Method of producing high-analysis fertilizer suspensions

Claim 1

THE METHOD OF PRODUCING A STABLE SUSPENSION-TYPE FERTILIZER HAVING HIGH PLANT-FOOD CONTENT, GOOD FLOW PROPERTIES, AND LOW VISCOSITY WHICH COMPRISES THE STEPS OF PRODUCING A HOT AMMONIUM PHOSPHATE SOLUTION BE REACTING TOGETHER, AND UTILIZING THEREFROM THE AUTOGENOUS HEAT OF SOLUTION, AN AMMONIATING FLUID AND PHOSPHORIC ACID, SAID PHOSPHORIC ACID SELECTED FROM THE GROUP CONSISTING OF WET-PROCESS PHOSPHORIC ACID AND ELECTRIC-FURNACE TYPE PHOSPHORIC AICD; COOLING SAID HOT AMMONIUM PHOSPHATE SOLUTION TO A TEMPERATURE ABOUT INTERMEDIATE THE REACTION TEMPERATURE AND AMBIENT TEMPERATURE; MXING N THE RESULTING PARTIALLY COOLED AMMONIUM PHOSPHATE SOLUTION AN IMPALPABLE MATERIAL SELECTED FROM THE CLAY GROUP CONSISTING ESSENTIALLY OF ATTAPULGITE AND BENTONITE IN QUANTITY SUFFICIENT TO FURNISH ABOUT 1 TO 5 PERCENT OF SAID IMPALPABLE MATERIAL IN THE FERTILIZER TO BE PRODUCED; THEREAFTER ADDING SUPPLEMENTAL MATERIAL TO SAID PARTIALLY COOLED AMMONIUM PHOSPHATE SOLUTION, SAID SUPPLEMENTAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF UREA AND AMMONIUM NITRATE; FURTHER COOLING THE RESULTING SUSPENSION TO ABOUT AMBIENT TEMPERATURE THROUGH ADDITION OF SOLID FERTILIZER SALTS TO SAID PARTIALLY COOLED AMMONIUM PHOSPHATE SOLUTION, SAID SALTS SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CARBONATE, POTASSIUM NITRATE, AND POTASSIUM CHLORIDE AND SAID SALTS BEING OF PARTICLE SIZE OF ABOUT MINUS-20 MESH; AND WITHDRAWING SAID RESULTING SUSPENSION AS PRODUCT.

Claim 2

THE METHOD OF PRODUCING A STABLE SUSPENSION-TYPE FERTILIZER HAVING HIGH PLANT-FOOD CONTENT, GOOD FLOW PROPERTIES, AND LOW VISCOSITY WHICH COMPRISES THE STEPS OF PRODUCING A HOT AMMONIUM PHOSPHATE SOLUTION BE REACTING TOGETHER, AND UTILIZING THEREFROM THE AUTOGENOUS HEAT OF SOLUTION, AN AMMONIATING FLUID AND PHOSPHORIC ACID, SAID PHOSPHORIC ACID SELECTED FROM THE GROUP CONSISTING OF WET-PROCESS PHOSPHORIC ACID AND ELECTRIC-FURNACE TYPE PHOSPHORIC AICD; COOLING SAID HOT AMMONIUM PHOSPHATE SOLUTION TO A TEMPERATURE ABOUT INTERMEDIATE THE REACTION TEMPERATURE AND AMBIENT TEMPERATURE; MXING N THE RESULTING PARTIALLY COOLED AMMONIUM PHOSPHATE SOLUTION AN IMPALPABLE MATERIAL SELECTED FROM THE CLAY GROUP CONSISTING ESSENTIALLY OF ATTAPULGITE AND BENTONITE IN QUANTITY SUFFICIENT TO FURNISH ABOUT 1 TO 5 PERCENT OF SAID IMPALPABLE MATERIAL IN THE FERTILIZER TO BE PRODUCED; THEREAFTER ADDING SUPPLEMENTAL MATERIAL TO SAID PARTIALLY COOLED AMMONIUM PHOSPHATE SOLUTION, SAID SUPPLEMENTAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF UREA AND AMMONIUM NITRATE; FURTHER COOLING THE RESULTING SUSPENSION TO ABOUT AMBIENT TEMPERATURE THROUGH ADDITION OF SOLID FERTILIZER SALTS TO SAID PARTIALLY COOLED AMMONIUM PHOSPHATE SOLUTION, SAID SALTS SELECTED FROM THE GROUP CONSISTING OF POTASSIUM CARBONATE, POTASSIUM NITRATE, AND POTASSIUM CHLORIDE AND SAID SALTS BEING OF PARTICLE SIZE OF ABOUT MINUS-20 MESH; AND WITHDRAWING SAID RESULTING SUSPENSION AS PRODUCT.