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Список видань за алфавітом назв: Авторський покажчик Покажчик назв публікацій  |
Пошуковий запит: (<.>A=Ostroha R$<.>) | |||
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Загальна кількість знайдених документів : 7 Представлено документи з 1 до 7 |
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| 1. | 
Yukhymenko M. Hydrodynamic and kinetic processes of the mineral fertilizer granules encapsulating in the multistage device with suspended layer [Електронний ресурс] / M. Yukhymenko, R. Ostroha, A. Artyukhov // Восточно-Европейский журнал передовых технологий. - 2016. - № 6(6). - С. 22-28. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2016_6(6)__4 | ||
| 2. |
Ostroha R. Investigation of the kinetic laws affecting the organic suspension granulation in the fluidized bed [Електронний ресурс] / R. Ostroha, M. Yukhymenko, S. Yakushko, A. Artyukhov // Восточно-Европейский журнал передовых технологий. - 2017. - № 4(1). - С. 4-10. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2017_4(1)__2 | ||
| 3. | 
Yukhymenko M. Research of operating mode of rhombic gravitational pneumatic classifier [Електронний ресурс] / M. Yukhymenko, R. Ostroha, A. Litvinenko, Y. Piddubnyi, D. Zabitsky // Технологический аудит и резервы производства. - 2019. - № 2(3). - С. 19-21. - Режим доступу: http://nbuv.gov.ua/UJRN/Tatrv_2019_2(3)__5 | ||
| 4. |
Ostroha R. Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus [Електронний ресурс] / R. Ostroha, M. Yukhymenko, J. Bocko, A. Artyukhov, J. Krmela // Eastern-european journal of enterprise technologies. - 2021. - № 4(6). - С. 23-32. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2021_4(6)__5 This paper has substantiated the expediency and prospects of obtaining organomineral fertilizers by encapsulating mineral granules with an organic suspension in fluidized bed apparatuses. An overview of existing approaches to the mathematical description of the kinetics of granule growth in granulation processes in fluidized bed apparatuses is presented. A mathematical model of the kinetics of the formation of a hard shell around granules in a fluidized bed has been built. It shows that the kinetics depend on the size of the retour particles, the specific flow rate of the suspension, the density of the suspension and granules, and the time of the process. Equations have been derived for determining the thickness of the hard shell and the specific flow rate of the suspension for individual granulation stages in a multi-stage granulator of the fluidized layer. Analytically, graphical dependences were built, which showed an increase in the thickness of the hard shell due to an increase in the specific flow rate of the suspension, the diameter of the retour particles, and the time of the encapsulation process. The equations make it possible to determine the rational regime and technological parameters of the encapsulation process in order to obtain a coating of the predefined thickness at the surface of the granules. This ensures that a quality product is obtained, with a granulometric composition in a narrower range of particle size. To obtain granules of 2,5 - 4 mm in size, it is necessary to carry out the process in three- or four-stage granulators of the fluidized bed at specific suspension consumption of (10 - 20) x 10<^>-4 | ||
| 5. |
Nadhem A.-K. M. Research of plate granulator operation modes in the production of coarse carbamide granules [Електронний ресурс] / A.-K. M. Nadhem, M. Skydanenko, R. Ostroha, A. Neshta, M. Yukhymenko, S. Yakhnenko, D. Zabitsky, S. Yesypchuk, O. Moskalchuk // Technology audit and production reserves. - 2022. - № 1(3). - С. 12–15. - Режим доступу: http://nbuv.gov.ua/UJRN/Tatrv_2022_1(3)__4 | ||
| 6. | 
Yurchenko O. Rational choice of a basket for the rotational vibropriller [Електронний ресурс] / O. Yurchenko, V. Sklabinskyi, M. Ochowiak, R. Ostroha, O. Gusak // Journal of engineering sciences. - 2022. - Vol. 9, Iss. 1. - С. F16–F20. - Режим доступу: http://nbuv.gov.ua/UJRN/jes_2022_9_1_12 The use of processing units for the production of mineral fertilizers in the industry in today's market requires improved product quality and increased productivity. As a result, there is a need to change the design of existing units or some structural elements. Rotary vibroprillers, having a relatively simple design, can be of different designs that directly affect the productivity indicators mentioned above. The study considers the influence of the shape of the basket bottom on the quality of the rotational vibroprillers. After using the governing equation of prills motion in the airflow, a program was developed for automatic control of the rotational speed of the priller based on changes in melt loads. It is established that the size of the spray swath can be changed by varying the rotational speed of the priller. There is a tendency to affect the vibropriller performance by controlling the rotational speed and shape of the basket bottom without performance degradation. | ||
| 7. |
Yukhymenko M. Design of a shelf pneumatic classifier for separating a polydisperse mixture of granulated superphosphate [Електронний ресурс] / M. Yukhymenko, R. Ostroha, J. Bocko // Eastern-European journal of enterprise technologies. - 2022. - № 6(1). - С. 33–42. - Режим доступу: http://nbuv.gov.ua/UJRN/Vejpte_2022_6(1)__6 The object of this study is a polydisperse mixture of granular superphosphate. It is emphasized that existing technologies of granulation and processing of granules lead to the formation of dusty fractions of small particles. The content of small fractions in the finished product should be minimal and, in connection with this problem, the task is to remove small particles from the mixture. The purpose of the current experimental study is to classify a polydisperse mixture of granular superphosphate in a pneumatic classifier. The device includes an inclined perforated shelf with an unloading space between its end and the wall of the apparatus. It has been experimentally revealed that the maximum efficiency of extraction into the entrainment of small particles is achieved with a width of the discharge space equal to 0.5 of the length of the cross-sectional side of the apparatus; the degree of perforation of the shelf is 5 %; the angle of inclination of the shelf is 25 - 30<^>o | ||
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