LAPSE:2023.4792v1
Published Article
LAPSE:2023.4792v1
Experimental Studies and Condition Monitoring of Auxiliary Processes in the Production of Al2O3 by Sol−Gel Technology
February 23, 2023
Abstract
Powders and granules of heavy metal oxides produced through condition monitoring are in high demand as intermediate products for obtaining fine-grained ceramics for a wide range of applications, i.e., nuclear fuel and fuel elements for nuclear power plants. Sol−gel technology to produce nuclear fuel (UO2), as well as catalysts (ThO2) for organic synthesis in the form of granules from pressed microspheres, is a promising method to obtain powders and granules of heavy metal oxides (fine-graded ceramics). Al2O3 was selected as the model analog at the stages of obtaining a solution of heavy metal and sol, the formation and gelation of droplets, and the preparation of gel spheres and their further washing and drying, as well as recovery and firing of particles. In the study, the main parameters were substantiated, e.g., the diameter and angle of inclination of the axis for the holes in the perforated shell, the multiplicity of sol circulation before the holes, the coefficients of liquid (sol) flow rate, the oscillation frequency of the disperser, and the concentration of surfactant and acid in sol. All of these parameters affect the characteristics of the granules that are obtained by sol−gel technology. Moreover, recommendations to increase productivity and the energy efficiency of production were also given. In particular, it was found that oscillation frequency in a range of 70−80 Hz leads to a granulometric composition of the obtained granules of 2.0−2.2 mm. A hole of 0.85 mm and a frequency of 100 Hz slightly change this range to 1.2−2.0 mm, while maintaining monodispersity.
Powders and granules of heavy metal oxides produced through condition monitoring are in high demand as intermediate products for obtaining fine-grained ceramics for a wide range of applications, i.e., nuclear fuel and fuel elements for nuclear power plants. Sol−gel technology to produce nuclear fuel (UO2), as well as catalysts (ThO2) for organic synthesis in the form of granules from pressed microspheres, is a promising method to obtain powders and granules of heavy metal oxides (fine-graded ceramics). Al2O3 was selected as the model analog at the stages of obtaining a solution of heavy metal and sol, the formation and gelation of droplets, and the preparation of gel spheres and their further washing and drying, as well as recovery and firing of particles. In the study, the main parameters were substantiated, e.g., the diameter and angle of inclination of the axis for the holes in the perforated shell, the multiplicity of sol circulation before the holes, the coefficients of liquid (sol) flow rate, the oscillation frequency of the disperser, and the concentration of surfactant and acid in sol. All of these parameters affect the characteristics of the granules that are obtained by sol−gel technology. Moreover, recommendations to increase productivity and the energy efficiency of production were also given. In particular, it was found that oscillation frequency in a range of 70−80 Hz leads to a granulometric composition of the obtained granules of 2.0−2.2 mm. A hole of 0.85 mm and a frequency of 100 Hz slightly change this range to 1.2−2.0 mm, while maintaining monodispersity.
Record ID
Keywords
coil pulsation washer, condition monitoring, Energy Efficiency, granules formation, microsphere, process innovation, sol–gel
Suggested Citation
Sklabinskyi V, Liaposhchenko O, Piteľ J, Pavlenko I, Skydanenko M, Ostroha R, Yukhymenko M, Simeiko K, Demianenko M, Volf M, Starynskyi O, Yurchenko O, Mandryka O. Experimental Studies and Condition Monitoring of Auxiliary Processes in the Production of Al2O3 by Sol−Gel Technology. (2023). LAPSE:2023.4792v1
Author Affiliations
Sklabinskyi V: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Liaposhchenko O: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Piteľ J: Faculty of Manufacturing Technologies, Technical University of Košice, 1 Bayerova St., 080 01 Presov, Slovakia [ORCID]
Pavlenko I: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Skydanenko M: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine
Ostroha R: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine
Yukhymenko M: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Simeiko K: The Gas Institute of National Academy of Sciences of Ukraine, 39 Dehtyarivska St., 03113 Kyiv, Ukraine
Demianenko M: Faculty of Electrical Engineering, University of West Bohemia, 22 Univerzitni, 32600 Plzen, Czech Republic
Volf M: Faculty of Electrical Engineering, University of West Bohemia, 22 Univerzitni, 32600 Plzen, Czech Republic
Starynskyi O: Bobcat Doosan EMEA s.r.o., 1810 U Kodetky, 26312 Dobris, Czech Republic
Yurchenko O: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Mandryka O: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine
Liaposhchenko O: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Piteľ J: Faculty of Manufacturing Technologies, Technical University of Košice, 1 Bayerova St., 080 01 Presov, Slovakia [ORCID]
Pavlenko I: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Skydanenko M: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine
Ostroha R: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine
Yukhymenko M: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Simeiko K: The Gas Institute of National Academy of Sciences of Ukraine, 39 Dehtyarivska St., 03113 Kyiv, Ukraine
Demianenko M: Faculty of Electrical Engineering, University of West Bohemia, 22 Univerzitni, 32600 Plzen, Czech Republic
Volf M: Faculty of Electrical Engineering, University of West Bohemia, 22 Univerzitni, 32600 Plzen, Czech Republic
Starynskyi O: Bobcat Doosan EMEA s.r.o., 1810 U Kodetky, 26312 Dobris, Czech Republic
Yurchenko O: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine [ORCID]
Mandryka O: Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine
Journal Name
Processes
Volume
10
Issue
10
First Page
2090
Year
2022
Publication Date
2022-10-15
ISSN
2227-9717
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PII: pr10102090, Publication Type: Journal Article
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LAPSE:2023.4792v1
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https://doi.org/10.3390/pr10102090
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