Studies of the sintering method of ash and slag waste for the production of alumina from self-disintegrating sinters
The goal of this research is to select the optimal composition of the sintering charge of ash and slag waste for maximum extraction of alumina and obtaining self-disintegrating sinters of a given chemical composition. Experiments have shown that sintering of ash and slag waste using two-component ch...
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Elsevier
2024-11-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024151481 |
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| author | Altynsary Bakirov Ablay Zhunusov Natalya Oleinikova Raigul Ramazanova |
| author_facet | Altynsary Bakirov Ablay Zhunusov Natalya Oleinikova Raigul Ramazanova |
| author_sort | Altynsary Bakirov |
| collection | DOAJ |
| description | The goal of this research is to select the optimal composition of the sintering charge of ash and slag waste for maximum extraction of alumina and obtaining self-disintegrating sinters of a given chemical composition. Experiments have shown that sintering of ash and slag waste using two-component charges makes it possible to extract alumina from sinters by no more than 60 %. The highest sintering rates were made using three-component charges. So, when sintering ash and slag waste from Almaty TPP-2 on a three-component charge of the composition CaO:SiO2 = 2; Na2O:(Al2O3+Fe2O3) = 1 at a duration of 60 min and a temperature of 1200 °C, alumina extraction was 83.68 %, under the same conditions, alumina extraction of 87.07 % was obtained during sintering of ash and slag waste from the Eurasian Energy Corporation, and alumina extraction was 90.2 % during sintering of ash and slag waste obtained after preliminary chemical activation.As a result of the conducted research on sintering of ash and slag waste in a three–component charge system, a self-disintegrating sinter of the following chemical composition was obtained, %: Na2O – 0.07; CaO – 26.88; SiO2 – 2.06; Fe2O3 – 5.01; Al2O3– 5.059. |
| format | Article |
| id | doaj-art-5e62a7a88e3449ca854aff4e1b322bd1 |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-5e62a7a88e3449ca854aff4e1b322bd12024-11-15T06:12:34ZengElsevierHeliyon2405-84402024-11-011021e39117Studies of the sintering method of ash and slag waste for the production of alumina from self-disintegrating sintersAltynsary Bakirov0Ablay Zhunusov1Natalya Oleinikova2Raigul Ramazanova3Postdoctoral Fellow at the School of Metallurgy and Processing, NJSC D. Serikbaev East Kazakhstan Technical University, Serikbayev 19, 070000, Ust-Kamenogorsk, Kazakhstan; Corresponding author.Candidate of Technical Sciences, Associate Professor of the Department of Metallurgy of NJSC Toraighyrov University, Lomov 64, 140008, Pavlodar, KazakhstanDoctor of Technical Sciences, Professor of the Department of Metallurgy of Non-ferrous Metals, Siberian Federal University, Krasnoyarsk worker 95, 660025, Krasnoyarsk, Russian FederationPostdoctoral Fellow at the School of Metallurgy and Processing, NJSC D. Serikbaev East Kazakhstan Technical University, Serikbayev 19, 070000, Ust-Kamenogorsk, KazakhstanThe goal of this research is to select the optimal composition of the sintering charge of ash and slag waste for maximum extraction of alumina and obtaining self-disintegrating sinters of a given chemical composition. Experiments have shown that sintering of ash and slag waste using two-component charges makes it possible to extract alumina from sinters by no more than 60 %. The highest sintering rates were made using three-component charges. So, when sintering ash and slag waste from Almaty TPP-2 on a three-component charge of the composition CaO:SiO2 = 2; Na2O:(Al2O3+Fe2O3) = 1 at a duration of 60 min and a temperature of 1200 °C, alumina extraction was 83.68 %, under the same conditions, alumina extraction of 87.07 % was obtained during sintering of ash and slag waste from the Eurasian Energy Corporation, and alumina extraction was 90.2 % during sintering of ash and slag waste obtained after preliminary chemical activation.As a result of the conducted research on sintering of ash and slag waste in a three–component charge system, a self-disintegrating sinter of the following chemical composition was obtained, %: Na2O – 0.07; CaO – 26.88; SiO2 – 2.06; Fe2O3 – 5.01; Al2O3– 5.059.http://www.sciencedirect.com/science/article/pii/S2405844024151481Ash and slag wasteSelf-scattering sintersActivationSinteringAluminaBicalcium silicate |
| spellingShingle | Altynsary Bakirov Ablay Zhunusov Natalya Oleinikova Raigul Ramazanova Studies of the sintering method of ash and slag waste for the production of alumina from self-disintegrating sinters Heliyon Ash and slag waste Self-scattering sinters Activation Sintering Alumina Bicalcium silicate |
| title | Studies of the sintering method of ash and slag waste for the production of alumina from self-disintegrating sinters |
| title_full | Studies of the sintering method of ash and slag waste for the production of alumina from self-disintegrating sinters |
| title_fullStr | Studies of the sintering method of ash and slag waste for the production of alumina from self-disintegrating sinters |
| title_full_unstemmed | Studies of the sintering method of ash and slag waste for the production of alumina from self-disintegrating sinters |
| title_short | Studies of the sintering method of ash and slag waste for the production of alumina from self-disintegrating sinters |
| title_sort | studies of the sintering method of ash and slag waste for the production of alumina from self disintegrating sinters |
| topic | Ash and slag waste Self-scattering sinters Activation Sintering Alumina Bicalcium silicate |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024151481 |
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