Effect of superheat degree and MnO on structural characteristics of CaO-SiO2-TiO2-based blast furnace slags
Source abstract
Abstract
High-temperature equilibration experiments were carried out to investigate the liquidus temperature of CaO-SiO 2-TiO 2-MnO slags, and the addition of MnO into the slag could decrease the liquidus temperature. Furthermore, Raman spectra of CaO-SiO 2-TiO 2–1wt%MnO quenched slags under various superheat degrees and slags with different MnO content were also studied to uncover the slag structure characteristics. Higher superheat degree mainly simplified the complicated structural units of CaO-SiO 2-TiO 2–1wt%MnO slags by promoting to form simpler silicate units. Increasing the MnO content in the slag could provide more free oxygen ions to break the Si-O bond of polymerized silicate units and weaken the silicate network stability. The relationship between slag viscosity and n BO was fitted, and the viscosity (lnη) linearly increased with increasing the n BO. To some extent, the fitted expression could reflect the relationships of the slag viscosity and structure.
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Research context
OpenAlex topics: Metallurgical Processes and Thermodynamics · Iron and Steelmaking Processes · Metal Extraction and Bioleaching
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. Influence of TiO2 and basicity on viscosity of Ti bearing slag10.1179/1743281211Y.0000000064 ↗
2. A review of the relationship between viscosity and the structure of calcium-silicate-based slags in ironmaking10.1002/srin.201200040 ↗
3. Influence of TiO2 on viscosity, phase composition and structure of chromium-containing high-titanium blast furnace slag10.1016/j.jmrt.2021.03.069 ↗
4. Physicochemical properties and structure of titania-containing metallurgical slags: a review10.1007/s42243-021-00678-z ↗
5. Effects of MnO on the smelting process of vanadium titanomagnetite pre-reduced pellets in an electric furnace10.1016/j.jmrt.2022.08.006 ↗
6. Structure of CaO-B2O3-SiO2-TiO2 glasses: a Raman spectral study10.2355/isijinternational.51.1021 ↗
7. Structure-property correlations of CaO-SiO2-MnO slag derived from Raman spectroscopy10.2355/isijinternational.52.1627 ↗
8. Composition-structure-property relationships of CaO-MO-SiO2 (M=Mg2+, Mn2+) systems derived from micro-Raman spectroscopy10.1016/j.jnoncrysol.2012.08.014 ↗
9. Effect of BaO and MnO on high-temperature properties and structure of blast furnace slag10.1016/j.jnoncrysol.2021.121066 ↗
10. Structure of silicate melts at high temperature: in-situ measurements in the system BaO-SiO2 to 1669°C
11. Effect of MnO on high-alumina slag viscosity and corrosion behavior of refractory in slags10.2355/isijinternational.ISIJINT-2017-120 ↗
12. The influence of TiO2 on the structure and derivative properties of silicate melts
13. Influence of TiO2 on the liquidus temperature and structure of CaO-SiO2-Fe2O3-TiO2 slags10.1016/j.jnoncrysol.2023.122357 ↗
14. Raman spectroscopic study of the structural properties of CaO-MgO-SiO2-TiO2 slags10.1016/j.jnoncrysol.2013.06.003 ↗
15. The effect of Ti4+ on the site of Al3+ in the structure of CaO-Al2O3-SiO2-TiO2 system glass10.1016/S0921-5093(98)00570-X ↗
16. Structural study of glassy CaO-SiO2-CaF2-TiO2 slags by Raman spectroscopy and MAS-NMR10.2355/isijinternational.54.721 ↗
17. A Raman spectroscopic study of glasses in the system CaO-MgO-SiO2
18. Curve-fitting of Raman spectra of silicate glasses
19. Relations between the anionic structure and viscosity of silicate melts - a Raman spectroscopic study
20. Influence of Cr2O3 and B2O3 on viscosity and structure of high alumina slag10.1002/srin.201600241 ↗
21. Investigation of the viscosity and structural properties of CaO-SiO2-TiO2 slags10.1007/s11663-014-0053-8 ↗
22. Viscosity of fluoride-free mold fluxes containing B2O3 and TiO210.1002/srin.201200256 ↗
23. Effects of TiO2 on the structural characteristics of CaO-SiO2-Al2O3-TiO2 glass in the same superheat state studied by Raman spectra10.1016/j.ceramint.2023.05.184 ↗
24. Effect of CaF2 addition on the viscosity and structure of CaO-SiO2-MnO slags10.2355/isijinternational.53.958 ↗
25. Transport and configurational properties of silicate melts: relationship to melt structure at magmatic temperatures10.1016/S0031-9201(97)00121-0 ↗
26. A structurally based viscosity model for oxide melts10.1007/s11663-013-9980-z ↗