Physical Modeling Study for Process Optimization of 300-ton RH Vacuum Refining Furnace

IF 2.5 3区材料科学 Q3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Journal of Sustainable Metallurgy Pub Date : 2024-02-29 DOI:10.1007/s40831-024-00799-1

Lidong Xing, Wei Xiao, Zefeng Zhang, Yanping Bao, Min Wang

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Abstract

To investigate the optimal operating conditions of a 300-ton RH vacuum refining furnace in a steel mill, a physical model of a 1/4 scale RH furnace was developed in this paper. Under the condition of fixed pressure in the vacuum chamber, the immersion depth of the snorkel and the injection gas flow rate are important conditions affecting the effect of vacuum refining. The effects of snorkel immersion depth, injection gas flow rate, and blowhole blockage on circulating flow rate, the mixing time in ladle, and residence time in vacuum chamber were systematically studied. The flow behavior and the decarburization behavior of the liquid in the vacuum chamber were analyzed. The influence law of RH blowhole blockage on the vacuum refining effect was also studied. As a result, the optimum production process suitable for the production of 300-ton RH furnace was deduced (the optimal immersion depth is 0.52–0.54 m, the recommended injection flow rate used in the early stage of decarbonization is about 160–180 m³/h), which provides guidance for its efficient production.

Graphical Abstract

Abstract Image

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300 吨 RH 真空精炼炉工艺优化的物理模型研究

为了研究钢厂 300 吨 RH 真空精炼炉的最佳运行条件，本文开发了一个 1/4 比例 RH 炉的物理模型。在真空室压力固定的条件下，潜孔浸入深度和注入气体流量是影响真空精炼效果的重要条件。系统研究了潜孔浸入深度、喷射气体流速和喷孔堵塞对循环流速、钢包内混合时间和真空室停留时间的影响。分析了真空室中液体的流动行为和脱碳行为。还研究了 RH 吹扫孔堵塞对真空精炼效果的影响规律。结果推导出了适合 300 吨 RH 炉生产的最佳生产工艺（最佳浸入深度为 0.52-0.54 m，脱碳初期推荐使用的喷射流量约为 160-180 m3/h），为其高效生产提供了指导。

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来源期刊

Journal of Sustainable Metallurgy Materials Science-Metals and Alloys

CiteScore

4.00

自引率

12.50%

发文量

151

期刊介绍： Journal of Sustainable Metallurgy is dedicated to presenting metallurgical processes and related research aimed at improving the sustainability of metal-producing industries, with a particular emphasis on materials recovery, reuse, and recycling. Its editorial scope encompasses new techniques, as well as optimization of existing processes, including utilization, treatment, and management of metallurgically generated residues. Articles on non-technical barriers and drivers that can affect sustainability will also be considered.