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Abstract
Purpose. Management of the formation of oxide fluoride slag at the stage of out-furnace treatment of the wheel metal. Methodology. Investigations of the energy technological regimes of out-of-furnace treatment of wheel steel were performed by analyzing the parameters of the basic metal processing technology at the ladle furnace. Results. The optimal input mode of the fluorspar is established when the ladle slag is formed at the ladle furnace installation. Scientific novelty. Analytical studies confirmed the absence in the structure of oxide fluoride slag structures containing fluorspar. Its role in the formation of ladle slag is defined as a depolymerization unit of spatial silica-oxygen groups and, as a consequence, an increase in the flowability of the melt while simultaneously increasing the oxidative potential of the slag. Practical significance. The results of the study determine the limits of the CaF2 content in the ladle slag and allow a 30–35% reduction in the power consumption during slag formation at the ladle furnace. Key words: Wheeled steel, electric arc furnace, metal intermediate, deoxidizing agents, alloying, slag-forming materials, fluorspar, ladle-furnace installation, energy saving.
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