DOI: 10.18503/1995-2732-2025-23-4-186-196
Abstract
Problem Statement (Relevance). Modern electrometallurgy is one of the most promising sectors of the domestic metallurgical industry. Due to their superior technical and economic performance compared to other steelmaking methods, electric steelmaking systems based on electric arc furnaces (EAF) and ladle furnaces (LF) are becoming increasingly widespread. Currently, the vast majority of LFU electrical control systems do not adapt their electrical operating modes to the conditions of inert gas purging into the melt or slag conditions, resulting in suboptimal operation and increased operating costs. Therefore, the development of improved algorithms for automatic electrical modes control that will compensate for this shortcoming is particularly relevant. Objectives. The research is aimed at developing and evaluating the effectiveness of the new algorithm for the LF electrical mode control, which will ensure adaptation of the electrical operating mode of the unit to constantly changing purging and slag modes using information on the harmonic composition of electric arc currents. Methods Applied. The work was performed using statistical and theoretical analysis, mathematical modeling, and experimental studies at an operating production facility. Originality. It lies in the fact that the improved control system for the electrical mode of the LF uses an analysis of the harmonic composition of arc currents to adapt the electrical mode to the purging and slag modes. Result. A fundamentally new algorithm for the LF electrical mode control with adaptation to the technological conditions of the melting process has been developed. Practical Relevance. The use of the developed algorithm allows for a reduction in the specific energy consumption during the melting process, which in turn will ensure a reduction in the cost of the final product.
Keywords
ladle furnace, electric arc, electric mode control system, harmonic composition of electric arc current, slag mode, argon purging mode
For citation
Nikolaev A.A., Tulupov P.G., Ryzhevol S.S., Bulanov M.V. Study of an Improved Algorithm for Automatic Control of Electrical Modes of a Ladle Furnace Unit. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2025, vol. 23, no. 4, pp. 186-196. https://doi.org/10.18503/1995-2732-2025-23-4-186-196
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