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- Title
Effect of TiO<sub>2</sub> on the Phase Transformation and Microstructure Evolution of Ti-Containing Melting Slag in the Alkali Fusion Process.
- Authors
Ma, Jing; Li, Wei; Fu, Guiqin; Zhu, Miaoyong
- Abstract
The effect of TiO2 on the phase transformation and microstructure evolution of Ti-containing melting slag in the alkali fusion process has been investigated. The results showed that, after alkali fusion roasting, the original phase of Ti-containing melting slag was completely decomposed by molten NaOH, and that the alkali fusion slag mainly included Na2TiO3 and NaMO2 (M = Ti, Mg). With increasing TiO2 content, NaMO2 and Na2TiO3 converted to each other, and the content of sodium magnesium silicate also changed with the "in and out" of Mg. The contents of NaAlO2 and silicates were not significantly affected by the TiO2 content, while the microstructure of the melting slag corroded by molten NaOH changed greatly. With increasing TiO2 content, the microstructure of the alkali fusion slag transformed from an uneven grain size to a uniform grain size, and ultimately a compact structure.
- Subjects
SLAG; MICROSTRUCTURE; ALKALIES; MELTING; GRAIN size
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2024, Vol 76, Issue 6, p3021
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-024-06558-7