Advanced Modeling of Slag Foaming and Its Industrial Applications for Energy Conservation in Electric Arc Furnaces

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

JOM Pub Date : 2025-03-03 DOI:10.1007/s11837-025-07190-9

Bo Cui, Shengqiang Song, Yan Wang, Jing Li, Xinjiang Wang, Shen Liu

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Abstract

Suitable foaming slag is beneficial for improving electricity utilization efficiency and reducing the electricity consumption of electric arc furnaces. One key factor determining the foaming performance of slag is the presence of certain solid particles. Additionally, the MgO content in the slag must reach saturation to minimize the consumption of refractory materials. In this study, based on the CaO-SiO₂-MgO-FeO slag system and calculations using FactSage 8.3 software, the saturation of MgO and its influence on the foaming properties of slag were investigated. An isothermal saturation diagram and a ternary isothermal cross-section diagram were constructed to compare the foaming properties of slag under different conditions. The relationship between electricity consumption and the foaming properties was verified by industrial test. The results showed that MgO saturation decreases with increasing slag basicity and increases with rising temperature. The effect of FeO content on MgO saturation was more significant at low basicity (B₂ ≤ 1.6) than at high basicity (B₂ > 1.6). Compared to slag outside the optimal foaming range, the average electricity consumption of slag with saturated MgO within the optimal foaming interval was reduced from 350.57 kWh/ton to 333.12 kWh/ton.

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电弧炉熔渣发泡先进建模及其节能工业应用

适宜的发泡渣有利于提高电弧炉的用电效率，降低电弧炉的用电量。渣中固体颗粒的存在是影响渣发泡性能的一个关键因素。此外，炉渣中的MgO含量必须达到饱和，以尽量减少耐火材料的消耗。本研究以CaO-SiO2-MgO-FeO渣体系为基础，利用FactSage 8.3软件进行计算，研究了MgO的饱和度及其对渣发泡性能的影响。通过等温饱和图和三元等温截面图对不同条件下炉渣的发泡性能进行了比较。通过工业试验验证了电耗与发泡性能之间的关系。结果表明：MgO饱和度随矿渣碱度的升高而降低，随温度的升高而升高；FeO含量对MgO饱和度的影响在低碱度（B2≤1.6）下比在高碱度（B2 > 1.6）下更为显著。与最佳发泡区间外的渣相比，最佳发泡区间内MgO饱和渣的平均电耗由350.57 kWh/t降至333.12 kWh/t。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

JOM 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.80%

发文量

540

审稿时长

2.8 months

期刊介绍： JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.