Constant

Claim 1

THE PROCESS OF DECOMPOSING PHOSPHATES FOR THE MANUFACTURE OF FERTILIZER THAT COMPRISES PREPARING A FLUID MIXTURE BY REACTING PHOSPHATES OF FERTILIZER GRADE WITH ACID COMPRISING SULFURIC ACID, AND NITRIC ACID OF CONCENTRATION ABOUT 60%, IN AMOUNTS PRODUCING A FLUID MIXTURE MAINLY COMPOSED OF PHOSPHORIC ACID AND CALCIUM NITRATE HAVING A DENSITY ABOUT 1.6, CIRCULATING THE SAID FLUID MIXTURE AND ADDING TO IT, SEPARATELY, FURTHER QUANTITIES OF SUCH PHOSPHATES AND ACID SO THAT THE PHOSPHATE MAY FIRST TEND TO REACT WITH PHOSPHORIC ACID OF THE FLUID MIXTURE AND THEREAFTER WITH THE NITRIC ACID, MAINTAINING A TEMPERATURE OF ABOUT 35* C. IN THE FLUID MIXTURE, WITHDRAWING FLUID MIXTURE FROM THE GENERAL MASS THEREOF, ADDING TO THE FLUID MIXTURE THUS WITHDRAWN RAW MATERIAL OF FERTILIZER GRADE IN QUANTITY SUFFICIENT TO FORM A FERTILIZER AND SUBJECTING IT TO IMMEDIATE SOLIDIFICATION AND PARTICULATION BY COOLING AND MECHANICAL DISRUPTION.