Distribution Ratio of Sulfur between CaO-SiO2-Al2O3-Na2O-TiO2 Slag and Carbon-Saturated Iron

To explore the feasibility of hot metal desulfurization using red mud, the sulfur distribution ratio (LS) between CaO-SiO2-Al2O3-Na2O-TiO2 slag and carbon-saturated iron is evaluated in this paper. First, the theoretical liquid areas of the CaO-SiO2-Al2O3 (-Na2O-TiO2) slag are discussed and the flux...

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Bibliographic Details
Published inMetals (Basel ) Vol. 8; no. 12; p. 1068
Main Authors Zhang, Kanghui, Zhang, Yanling, Wu, Tuo
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2018
Subjects
Aluminum oxide
Basicity
Calcium oxide
Carbon
carbon-saturated iron
Equilibrium
Experiments
Fluxing
Graphite
High temperature
Iron
liquid area
Red mud
Silicon dioxide
Slag
Sulfur
Sulfur content
sulfur distribution ratio
Titanium dioxide
Japan
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Summary:To explore the feasibility of hot metal desulfurization using red mud, the sulfur distribution ratio (LS) between CaO-SiO2-Al2O3-Na2O-TiO2 slag and carbon-saturated iron is evaluated in this paper. First, the theoretical liquid areas of the CaO-SiO2-Al2O3 (-Na2O-TiO2) slag are discussed and the fluxing effects of Al2O3, Na2O, and TiO2 are confirmed. Then, LS is measured via slag-metal equilibrium experiments. The experimental results show that LS significantly increases with the increase of temperature, basicity, and Na2O content, whereas it decreases with the increase of Al2O3 and TiO2 content. Na2O in the slag will volatilize with high temperatures and reducing conditions. Furthermore, based on experimental data for the sulfur distribution ratio between CaO-SiO2-Al2O3-Na2O-TiO2 slag and the carbon-saturated iron, the following fitting formula is obtained: log L S = 45.584 Λ + 10568.406 − 17184.041 Λ T − 8.529
ISSN:2075-4701
2075-4701
DOI:10.3390/met8121068