Vetsner Y. Tehnology of NPCa-fertilizer using urea phosphate and low phosphorus (V) oxide

The object of the research: chemical processes that occur in the interaction of urea with nitric acid extract. The aim of the work: development of scientific bases of integrated technology NPCa- fertilizer with trace elements using urea. Research methods: x-ray phase, rentgenflyuorestsentny methods, x-ray diffraction, pH-metry. Theoretical and practical results:set up a kinetic model of the interaction of urea with nitric acid extraction, developed concept NPCa- producing fertilizers. Novelty: сreation of the theoretical foundations of technology NPCa-fertilizers from low grade rock phosphate and urea. Degree of itroduction: developed technology complex NPCa-fertilizer (patents No. 93336 and 81228 of Ukraine for useful model). The resulting fertilizer is characterized by a high content of assimilable forms of nutrients, the chemical composition of the developed fertilizers is confirmed by the patent of Ukraine № 93886. The efficiency of suggested technology is proved by the results of researches on experimental installation. On the basis of National scientific center "Institute for soil science and agricultural chemistry named after A. N. Sokolovskyi" (Kharkiv) conducted agrochemical research, in a vegetation experiment, to establish the biological effectiveness of the fertilizer. The results obtained are used in the educational process during the diploma and master works in the specialty "Chemical technology of inorganic substances" day and correspondence forms of training. According to the results of the research of the fertilizers had increased the yield of vegetable crops: fertilizer No. 1 on 12%, fertilizer No. 2 - 30%. For the field test is recommended to use fertilizer No. 2. The results obtained are used in the educational process during the diploma and master works in the specialty "Chemical technology of inorganic substances" day and correspondence forms of training. Branch of the use: Chemical industry.