Study of Density and Viscosity Properties of Urea-Sulfate-Nitrate Liquids

Currently, many countries that produce ammonium nitrate (AN) are conducting scientific research to identify additives—acting as modifiers—that offer high agrochemical efficiency and improve the product's consumer-relevant properties. In this context, it is necessary to establish a scientific and technical basis for producing non-caking, thermally stabilized AN. This involves several key approaches: creating crystallization centers by incorporating new, highly effective additives (in optimal proportions) into the AN melt, which fill the pores and micro-cracks within the granules and result in a superior surface and internal structure; investigating how these selected additives enhance granule strength and increase the initial decomposition temperature, while simultaneously reducing caking, porosity, and explosive potential; and developing a technology to produce thermally stabilized AN that possesses excellent physicochemical, commercial, and agrochemical characteristics. The rheological properties of modified ammonium nitrate (AN) samples—produced by incorporating finely ground ammonium sulfate ((NH4)2SO4) powder into an ammonium nitrate melt—as well as those of sulfate-nitrate melts and sulfate-urea-nitrate melts (derived from NH4NO3, (NH4)2SO4, and (NH2)2CO), were determined.