Abstract
Directly charging limestone into slag in BOF is a newly emerging technique which broke through the traditional BOF slagging principle. It is necessary to study the decomposition behavior of limestone in converter slag during BOF steelmaking. FeO x , SiO2, MnO x and pre-melting slags were mixed with limestone according to different quality proportion to simulate the environment of limestone in converter slag. TG-DTA results indicated that slag with individual component, including FeO x , SiO2 and MnO x , all had obvious effects on reducing the decomposition temperature of limestone. Pre-melting slags with multiple components had further reducing effects than individual component. XRD results showed converter slag component would react with decomposition product of CaCO3 and generate solid solution or oxide, reducing the activity of CaO and the decomposition temperature of CaCO3.
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The financial support of the National Key Technology Support Program (2012BAC27B02) is gratefully acknowledged.
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© 2017 The Minerals, Metals & Materials Society
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Lu, H., Li, C., Mao, W., Li, H. (2017). Influence of Converter Slag on Decomposition Behavior of Limestone During BOF Steelmaking Process. In: Hwang, JY., et al. 8th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-51340-9_69
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DOI: https://doi.org/10.1007/978-3-319-51340-9_69
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