Abstract
A mathematical model of converter slagging and steelmaking process by replacing part of lime with limestone is established. The rate equations of oxidation reactions and lime dissolution in converter under the limestone substitution proportion increasing from 25 to 50% can be obtained and the effects of limestone substitution proportion on the variations of the composition of hot metal, slag and converter gas during the steelmaking process are investigated. In the process of converter slagging and steelmaking by replacing part of lime with limestone, increasing the hot metal temperature and the lance height could be favor to increase the content of FeO in the slag and accelerate the limestone decomposition and dissolution. With the limestone substitution proportion increasing from 25 to 50%, the maximum of oxygen supply ratio increases from 10.7 to 19.7% and the temperature drop of converter bath is 8–60 °C.
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Acknowledgements
The authors gratefully acknowledge the National Natural Science Foundation of China (51374057, 51374062, 51574066, 51574065) which has made this research possible.
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© 2018 The Minerals, Metals & Materials Society
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Deng, H., Wang, N., Chen, M., Xu, L., Xin, J. (2018). Mathematical Modeling and Analysis of Converter Slagging and Steelmaking Process by Replacing Part of Lime with Limestone. In: Hwang, JY., et al. 9th International Symposium on High-Temperature Metallurgical Processing. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72138-5_56
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DOI: https://doi.org/10.1007/978-3-319-72138-5_56
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