Production Of Complex Fertilizers Based On Nitric Acid Decomposition Of Unenforced Phosphorites Of Central Kyzylkums

Abstract

New types of complex fertilizers containing nitrogen in the form of calcium and potassium nitrates, phosphorus – mono- and dicalcium phosphate, as well as undecomposed raw materials inactivated form, potassium and calcium, have been obtained on the basis of decomposition products of high-carbonate phosphate with an incomplete norm of nitric acid and potassium chloride. The optimal rate of nitric acid for the decomposition of high-carbonate phosphorous is 40-50% of stoichiometry since this results in pulp with satisfactory technological parameters for further processing into complex fertilizers.