2022 Mamataliyes Researching some physico chemical properties of nitrogen and sulfur containing fertilizers based on melt of ammonium nitrate and ammonium sulphate
This work analyzes the methods of producing nitrogen and sulfur-containing fertilizer ammonium sulfate-nitrate. Under laboratory conditions, samples of nitrogen and sulfur-containing fertilizers were obtained in which the mass ratios of ammonium nitrate (NH4NO3) to ammonium sulfate (NH4)2SO4) varied from 97: 3 to 60: 40. In the samples, the pH values of a 10% solution, the beginning of temperature decomposition, strength, caking and absorbency. It is shown that the product obtained by introducing 40% ammonium sulfate into the ammonium nitrate melt contains 29.26% N (18.85% ammonia and 10.41% nitrate forms) and 9.59% S. Its granules are characterized by the following parameters: strength – 7.75 MPa, caking capacity – 1.26 kg/cm2, absorption of diesel fuel – 2.29 g in relation to 100 g of product, dissolution time in water – 116 sec., pH – 3.03 and the temperature of the beginning of decomposition – 246.3℃. At the same time, for granules of pure NH4NO3 they are 1.32 MPa, 5.62 kg/cm2, 4.82 g, 44.6 sec., 90 thermal cycles and 210℃.