NPSCA-containing fertilizers based on ammonium nitrate melt and powder Suprefos-NS

Abstract

Methods for improving the composition and properties of ammonium nitrate (AN) using various inorganic additives are considered. It has been shown that the employing Suprefos-NS, a product of JSC “Ammofos-Maxam”, as an additive in the AN melt allows obtaining a stabilized fertilizer containing, except nitrogen and phosphorus, macroelements such as calcium and sulfur, exclusively in assimilable forms. In this case, the mass ratio AN: Suprefos-NS varied in the range from 100: 5 to 100: 35. It was found that any amount of Suprefos-NS additives significantly improves the composition and properties of the AN.

Synthesizing a Water-Soluble Polymeric Nitrification Inhibitor with Novel Soil-Loosening Ability

“…By introducing a copolymer structure with a strong flocculation capacity, the polymeric nitrification inhibitor is further endowed with soil-loosening function, which can increase the porosity of soil to improve the soil environment. Compared with other reported nitrification inhibitors [11][12][13][14]19,20], our NI possesses additional functions without the reduction in nitrification inhibition efficiency. This paper provides a new idea and method to improve the high temperature resistance of NI and to endow NI with multifunctionality.…”

“…However, the commonly used NIs, such as 3,4-dimethylpyrazole phosphate (DMPP), of which the effective nitrification inhibiting ingredient is 3,4-dimethylpyrazole (DMPZ), are volatile and not resistant to high temperature [ 11 ]. Even after complexing with phosphoric acid, these shortcomings have not been effectively improved, limiting NIs’ application in some production processes that require high-temperature treatment [ 12 , 13 , 14 , 15 ]. Based on our earlier studies, the high temperature resistance can be improved by wrapping the NI in polymer networks, thus expanding its application in high tower melting granulation process [ 16 , 17 , 18 , 19 , 20 ].…”