Development of Clean Steel Production

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Extractive Metallurgy".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 2954

Special Issue Editors


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Guest Editor
School of metallurgical engineering, Anhui University of Technology, Maanshan 243032, China
Interests: continuous casting; ingot casting; physical and numerical modelling; non-metallic inclusion; electromagnetic metallurgy

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Guest Editor
School of Metallurgy, Northeastern University, Shenyang 110819, China
Interests: steel metallurgy; numerical simulation; functional oxide melts
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Special Issue Information

Dear Colleagues,

The control of steel cleanness is a systematic and complicated project throughout the whole steel production process. Based on the traditional smelting process of clean steel and the requirements of compact, efficient, energy-saving and low-cost production, improved technology for clean steel production is required to obtain better thermodynamic and kinetic conditions. During steel production, the refining and casting process is very important for steel cleanness, which plays an important role in the removal of inclusions and harmful elements, the control of inclusion types, the refinement of the structure and the improvement of the performance of the steel by adding alloying elements, and so on. There is no simple and perfect method to evaluate the cleanness of steel. A variety of appropriate methods are required to evaluate the cleanness of a steel (e.g., inclusions of different sizes, compositions, shapes and positions).

Physical and numerical simulations have played an important role in the improvement of the process. The flow, heat transfer and mass transfer in a single metallurgical reactor in the process of steelmaking, refining and continuous casting, including external field metallurgy, are of great significance to the control of inclusions in the deoxidation of clean steel. The flow, heat and mass transfer of molten steel and the migration of inclusions in the process of steelmaking, refining and continuous casting are important ways to achieve high-efficiency and low-cost production of clean steel smelting. Consequently, the current Special Issue focuses on the topic of “Development of Clean Steel Production”. We hope to show the latest research results and to bring new insights on clean steel production. We are pleased to invite you to submit your original manuscripts for this Special Issue. You are welcome to provide articles on clean steel production, including but not limited to those on converter steelmaking, ladle refining, tundish metallurgy, continuous casting, ingot casting and electromagnetic metallurgy.

Prof. Dr. Qiang Yue
Prof. Dr. Peiyuan Ni
Guest Editors

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Published Papers (1 paper)

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Research

25 pages, 5257 KiB  
Article
Coarsening Mechanisms of CaS Inclusions in Ca-Treated Steels
by Keyan Miao, Muhammad Nabeel and Neslihan Dogan
Metals 2022, 12(5), 707; https://doi.org/10.3390/met12050707 - 20 Apr 2022
Cited by 3 | Viewed by 2033
Abstract
In this work, the coarsening mechanisms of CaS inclusions in liquid steel were investigated by analyzing inclusions in experimental and industrial samples. A detailed particle size distribution evolution was reported. The observed CaS coarsening rate was compared with the theoretical coarsening rate calculated [...] Read more.
In this work, the coarsening mechanisms of CaS inclusions in liquid steel were investigated by analyzing inclusions in experimental and industrial samples. A detailed particle size distribution evolution was reported. The observed CaS coarsening rate was compared with the theoretical coarsening rate calculated by using the models proposed in the literature. For both experimental and industrial data, it was observed that the coarsening mechanisms varied during different stages of Ca treatment. It was found that in the early stage (after Ca addition) of experiments and during Ca addition under industrial conditions, the coarsening of CaS was governed by diffusion-controlled growth. As the Ca dissolved in steel diminished, the coarsening was governed by collision-dependent mechanisms. For experimental conditions, the growth of CaS was controlled by the Brownian collisions, while the coarsening by turbulent collisions was the dominant mechanism under industrial conditions. Full article
(This article belongs to the Special Issue Development of Clean Steel Production)
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