控制高碳含铬钢真空脱气过程中CaO夹杂物增加的炉渣优化

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2022-10-28 DOI:10.1080/03019233.2022.2133430

Zhi-qi Miao, G. Cheng, Shi-jian Li, Yunpeng Wang, Wei-xing Dai, WenWen Du

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引用次数: 0

摘要

摘要介绍了真空脱气（VD）处理过程中炉渣成分对夹杂物中CaO含量的影响。工业试验和热力学计算用于测试、分析和确定适当的优化方法。经过优化，VD处理后的夹杂物CaO含量从11.3质量%下降到7.4质量%，热轧棒材中含CaO夹杂物的数量也从146个下降到41个。研究发现，理想的动力学条件和VD过程中Ca的蒸发相结合，有望进一步促进钢液中Al与炉渣中CaO的反应。炉渣中产生的部分Ca会与夹杂物进一步反应，导致夹杂物中CaO含量和夹杂物当量圆直径的增加。通过热力学计算，得到了熔渣组分与钢水组分平衡时的数学关系式。

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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Slag optimization to control CaO increase in inclusions during vacuum degassing of high carbon chromium-bearing steel

ABSTRACT The impacts of slag composition on the CaO content in inclusions during vacuum degassing(VD) treatment are presented. Industrial trials and thermodynamic calculations are used to test, analyze and identify proper optimization method. After optimization, the CaO content of inclusions after VD treatment decreases from 11.3mass% to 7.4mass%. Furthermore, the quantity of CaO containing inclusions in hot-rolled bar decreases from 146 to 41 as well. It is found that the ideal kinetic conditions and the evaporation of Ca during VD process combined trigger and are expected to further enhance the reaction between Al in liquid steel and CaO in slag. Some of the Ca generated from slag will further react with the inclusions which leads to the increase of CaO content in inclusions and equivalent circle diameter of the inclusions. The mathematical correlations among the components of slag in equilibrium with that of liquid steel is obtained by thermodynamic calculations.

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来源期刊

Ironmaking & Steelmaking 工程技术-冶金工程

CiteScore

3.70

自引率

9.50%

发文量

125

审稿时长

2.9 months

期刊介绍： Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.