Combing role of MgO and Al2O3 on viscosity and its correlation to structure of fluorine-free mold fluxes
By using FactSage calculations, Fourier transform infrared spectroscopy (FTIR), rotational viscometers, and X-ray diffraction (XRD), the combined effect of MgO and Al2O3 on fluorine-free mold flux was confirmed. The viscosity of the slag at 1300 oC decreased with 2-10 wt% MgO, and higher Al2O3 incre...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Technical Faculty, Bor
2023-01-01
|
| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300044W.pdf |
| _version_ | 1797215496353873920 |
|---|---|
| author | Wang H.-C. Bao G.-D. Sadaf S. Mao S.-S. Wu T. |
| author_facet | Wang H.-C. Bao G.-D. Sadaf S. Mao S.-S. Wu T. |
| author_sort | Wang H.-C. |
| collection | DOAJ |
| description | By using FactSage calculations, Fourier transform infrared spectroscopy (FTIR), rotational viscometers, and X-ray diffraction (XRD), the combined effect of MgO and Al2O3 on fluorine-free mold flux was confirmed. The viscosity of the slag at 1300 oC decreased with 2-10 wt% MgO, and higher Al2O3 increased the overall viscosity. The trend of the experimental results was consistent with the models of Riboud and Iida, while the FactSage calculation values were relatively higher. The viscosity of the slag was more influenced by the Si-O network than by the Al(B)-O structure and the MgO has a dual effect on the slag structure. The viscosity-temperature curves changed from alkaline to acidic slag characteristics when Al2O3 increased from 8 wt% to 12 wt%, and the trend was not uniform with the addition of 2-10 wt% MgO. Both FactSage calculation and XRD patterns showed that increasing MgO content gradually promoted the growth of Ca3MgSi2O8 and Ca11Si4B2O22 crystals, while the addition of Al2O3 inhibited crystal precipitation. |
| first_indexed | 2024-04-24T11:30:59Z |
| format | Article |
| id | doaj.art-6ae2eb7e17614b71ac8186cb9317ab3a |
| institution | Directory Open Access Journal |
| issn | 1450-5339 2217-7175 |
| language | English |
| last_indexed | 2024-04-24T11:30:59Z |
| publishDate | 2023-01-01 |
| publisher | Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj.art-6ae2eb7e17614b71ac8186cb9317ab3a2024-04-10T10:16:57ZengTechnical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752023-01-0159350751410.2298/JMMB230710044W1450-53392300044WCombing role of MgO and Al2O3 on viscosity and its correlation to structure of fluorine-free mold fluxesWang H.-C.0Bao G.-D.1Sadaf S.2Mao S.-S.3Wu T.4Anhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, China + Key Laboratory of Metallurgical Emission Reduction & Resource Recycling (Ministry of Education), Anhui University of Technology, Anhui, Ma’anshan, ChinaAnhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, ChinaAnhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, ChinaAnhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, ChinaAnhui University of Technology, School of Metallurgical Engineering, Anhui, Ma’anshan, China + Key Laboratory of Metallurgical Emission Reduction & Resource Recycling (Ministry of Education), Anhui University of Technology, Anhui, Ma’anshan, ChinaBy using FactSage calculations, Fourier transform infrared spectroscopy (FTIR), rotational viscometers, and X-ray diffraction (XRD), the combined effect of MgO and Al2O3 on fluorine-free mold flux was confirmed. The viscosity of the slag at 1300 oC decreased with 2-10 wt% MgO, and higher Al2O3 increased the overall viscosity. The trend of the experimental results was consistent with the models of Riboud and Iida, while the FactSage calculation values were relatively higher. The viscosity of the slag was more influenced by the Si-O network than by the Al(B)-O structure and the MgO has a dual effect on the slag structure. The viscosity-temperature curves changed from alkaline to acidic slag characteristics when Al2O3 increased from 8 wt% to 12 wt%, and the trend was not uniform with the addition of 2-10 wt% MgO. Both FactSage calculation and XRD patterns showed that increasing MgO content gradually promoted the growth of Ca3MgSi2O8 and Ca11Si4B2O22 crystals, while the addition of Al2O3 inhibited crystal precipitation.https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300044W.pdfmold fluxesfluorine-freestructureviscositycrystallization |
| spellingShingle | Wang H.-C. Bao G.-D. Sadaf S. Mao S.-S. Wu T. Combing role of MgO and Al2O3 on viscosity and its correlation to structure of fluorine-free mold fluxes Journal of Mining and Metallurgy. Section B: Metallurgy mold fluxes fluorine-free structure viscosity crystallization |
| title | Combing role of MgO and Al2O3 on viscosity and its correlation to structure of fluorine-free mold fluxes |
| title_full | Combing role of MgO and Al2O3 on viscosity and its correlation to structure of fluorine-free mold fluxes |
| title_fullStr | Combing role of MgO and Al2O3 on viscosity and its correlation to structure of fluorine-free mold fluxes |
| title_full_unstemmed | Combing role of MgO and Al2O3 on viscosity and its correlation to structure of fluorine-free mold fluxes |
| title_short | Combing role of MgO and Al2O3 on viscosity and its correlation to structure of fluorine-free mold fluxes |
| title_sort | combing role of mgo and al2o3 on viscosity and its correlation to structure of fluorine free mold fluxes |
| topic | mold fluxes fluorine-free structure viscosity crystallization |
| url | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300044W.pdf |
| work_keys_str_mv | AT wanghc combingroleofmgoandal2o3onviscosityanditscorrelationtostructureoffluorinefreemoldfluxes AT baogd combingroleofmgoandal2o3onviscosityanditscorrelationtostructureoffluorinefreemoldfluxes AT sadafs combingroleofmgoandal2o3onviscosityanditscorrelationtostructureoffluorinefreemoldfluxes AT maoss combingroleofmgoandal2o3onviscosityanditscorrelationtostructureoffluorinefreemoldfluxes AT wut combingroleofmgoandal2o3onviscosityanditscorrelationtostructureoffluorinefreemoldfluxes |