Production of suspension fertilizers from wet-process orthophosphoric acids

摘要: A PROCESS FOR PREPARING CONCENTRATED, HIGH-GRADE N-P2O5(E.G. 12-40-0) AND MIXED N-P2O5-K2O (E.G. 14-14-14) SUSPENSION FERTILLIZERS WITH EXCEPTIONALLY SATISFACTORY LONG-TERM STORAGE PROPERTIES FROM MERCHANT GRADE (50-54 PERCENT P2O5) WET-PROCESS PHOSPHORIC ACID OR OTHER IMPURE ACIDS. THE INVOLVES AMMONITATION OF INN TWO MORE STEPS TO REDUCE PRECIPITATION AMORPHOUS MATEIRALS DERIVED IMPURITIES WHICH HAVE GEL-LIKE THAT DESTROY FLUDITY FERTILLIZER PRODUCTS. OTHEER FACTORS IMPORTANT SUCCESSFUL OPERATION ARE PH, REACTION TEMPERATURE RETENTION TIME IN EACH STEP STAGE.