磷在2CaO·SiO2与CaO-SiO2-FeO-P2O5渣界面的扩散

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

Ironmaking & Steelmaking Pub Date : 2022-12-28 DOI:10.1080/03019233.2022.2154990

Yan Song, Xiaojun Hu, K. Chou

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引用次数: 1

摘要

固态2CaO·SiO2（C2S）在钢渣中的反应行为在铁水脱磷过程中备受关注。在本工作中，制备了C2S样品并将其与钢渣界面连接，以研究熔渣熔化开始时在1723K下C2S界面上的磷扩散行为。结果表明，磷从炉渣向C2S的扩散非常迅速，扩散系数为4.44 × 10−9 m2·s−1。随着反应时间的增加，连续形成富磷相。随着反应时间的增加，扩散层的组成变得更接近3CaO·P2O5（C3P），而远离C2S。结果表明，通过仔细选择C2S与钢渣之间的界面特性，可以实现更高效率的铁水脱磷过程。

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Phosphorus diffusion at the interface between 2CaO·SiO2 and CaO–SiO2–FeO–P2O5 slag

ABSTRACT The reaction behaviour of solid 2CaO·SiO2 (C2S) in steel slag is of great interest during the hot-metal dephosphorization process. In the present work, C2S samples were prepared and interfaced with steel slag to investigate the phosphorus diffusion behaviour at the interface of C2S at 1723K at the onset of the slag melting. The results showed that the phosphorus diffusion from the slag to C2S was very rapid with a significant diffusion coefficient of 4.44 × 10−9 m2·s−1. Phosphorus-enriched phases were formed continuously with increasing reaction time. As the reaction time increases, the composition of the diffusion layer becomes closer to 3CaO·P2O5 (C3P) and farther away from the C2S. The results indicate that a hot-metal dephosphorization process with much higher efficiency can be achieved by the careful selection of the interface characteristics between the C2S and steel slag.

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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.