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A mathematical model for the dynamic desulfurization process of ultra-low-sulfur steel in the LF refining process

  • Ya-nan Chen Chen (a1) (a2), Yan -ping Bao (a1) (a2), Min Wang (a3), Li -hua Zhao (a1) (a2) and Zun Peng (a1) (a2)...

Abstract

In order to obtain the dynamic variation rule of the sulfur content of liquid steel in the LF refining process, a complete mathematical model including a desulfurization kinetic model and temperature model in the deep desulfurization process is presented, based on the practical production and reaction mechanism of ultra-low-sulfur steel in a LF. The results show that the calculated values of the sulfur content in liquid steel using the model fit the experimental values well, and the relative error is less than 8%. The effects of refining slag on the desulfurization process are analyzed in this paper, which shows that slag basicity is most important at the early and middle stages of the process, while slag weight is most important at the middle and late stages. The effect of the above factors on the final sulfur content of liquid steel is further analyzed quantitatively. The simulated results provide a theoretical basis to segment control the refining process in order to achieve the maximum effect, improving efficiency, saving energy and reducing consumption.

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Keywords

A mathematical model for the dynamic desulfurization process of ultra-low-sulfur steel in the LF refining process

  • Ya-nan Chen Chen (a1) (a2), Yan -ping Bao (a1) (a2), Min Wang (a3), Li -hua Zhao (a1) (a2) and Zun Peng (a1) (a2)...

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