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© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

The recycling of hazardous industrial waste into high-tech materials with desired properties is of considerable interest since it provides optimal alternatives for its final disposal. Coal fly ash, the major waste generated by coal-fired power plants, contains significant quantities of dispersed microspheres with a diameter smaller than 10 μm, which are anthropogenic atmospheric pollutants PM10. Due to their composition and fine-grained powder morphology, they can be converted into sintered products. In this study, dispersed microspheres from class C fly ash were directly sintered without any additive to form high-strength glass-ceramics with magnetic properties. The optimum processing conditions were achieved at a temperature of 1200 °C, at which samples with a compressive strength of 100.6 MPa were obtained. Sintering reduces the quantity of the glass phase and promotes the formation of larnite, Fe-spinel, ye’elimite, and ternesite. Mössbauer measurements show that the relative concentration of the magnetic phase compared to the paramagnetic one rises almost in order. The sintered sample demonstrates a narrower distribution of the hyperfine magnetic field and a significantly lower value of the coercive field of 25 Oe, which allows proposing such materials as soft magnetic materials. The presented results demonstrate promising industrial applications of hazardous PM10 to minimize solid waste pollution.

Details

Title
Characterization and Magnetic Properties of Sintered Glass-Ceramics from Dispersed Fly Ash Microspheres
Author
Fomenko, Elena V 1   VIAFID ORCID Logo  ; Akimochkina, Galina V 1   VIAFID ORCID Logo  ; Knyazev, Yuriy V 2   VIAFID ORCID Logo  ; Semenov, Sergey V 3   VIAFID ORCID Logo  ; Yumashev, Vladimir V 4   VIAFID ORCID Logo  ; Solovyov, Leonid A 1 ; Anshits, Alexander G 5 

 Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; [email protected] (G.V.A.); [email protected] (V.V.Y.); [email protected] (L.A.S.); [email protected] (A.G.A.) 
 Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; [email protected] (Y.V.K.); [email protected] (S.V.S.) 
 Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; [email protected] (Y.V.K.); [email protected] (S.V.S.); Institute of Engineering Physics and Radioelectronics, Siberian Federal University, 79 Svobodny Av., 660041 Krasnoyarsk, Russia 
 Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; [email protected] (G.V.A.); [email protected] (V.V.Y.); [email protected] (L.A.S.); [email protected] (A.G.A.); Laboratory of Electron Microscopy, Siberian Federal University, 79 Svobodny Av., 660041 Krasnoyarsk, Russia 
 Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; [email protected] (G.V.A.); [email protected] (V.V.Y.); [email protected] (L.A.S.); [email protected] (A.G.A.); Department of Chemistry, Siberian Federal University, Svobodny Av. 79, 660041 Krasnoyarsk, Russia 
First page
177
Publication year
2023
Publication date
2023
Publisher
MDPI AG
e-ISSN
23127481
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2843079539
Copyright
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.