Applied Chemical Engineering

Study on Phase Transformation and Desulfurization Ability during Refining with Flux Additions of B2O3 and CaF2 into CaO-Based Desulfurizer

Chih-Chun Hsieh

Department of Materials Science and Engineering, National Chung Hsing University

Cheng-Han Wu

Department of Materials Science and Engineering, National Chung Hsing University

Weite Wu

Department of Materials Science and Engineering, National Chung Hsing University

DOI: https://doi.org/10.24294/ace.v1i2.428

Keywords: Compounds, Oxides, Recycling, Phase Transformation, X-Ray Diffraction

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Abstract

CaF₂ aids melting and desulfurization, but can also cause environmental pollution. Thus, it has become important to discuss the phase transformation and find a substitute for CaF₂. A CaO-based desulfurizer with various flux additions of B₂O₃ and CaF₂ is investigated during the refining process. The purpose of this study is to discuss the phase transformation and desulfurization ability and during refining with B₂O₃ and CaF₂ using a high frequency furnace. Experimental results indicate that the melting temperature of CaO-Al₂O₃-SiO₂ series desulfurizer becomes lower when more B₂O₃ and less CaF₂ are added. On the other hand, the desulfurization ability can be affected within 15 min when various proportions of B₂O₃ and CaF₂ areadded. The desulfurization ability is better with a high content of B₂O₃ desulfurizer within a 15 min period. However, the desulfurization ability is not affected by the proportion of B₂O₃ and CaF₂ for a long melting period (30 min).

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Author Biography

Chih-Chun Hsieh, Department of Materials Science and Engineering, National Chung Hsing University

Dr. Chih-Chun Hsieh is currently an Assistant Professor in the Department of Department of Aircraft Engineering, Air Force Institute of Technology, Taiwan. He was also a Lead Guest Editor in Advances in Materials Science and Engineering. His academic skill is steels, metals, residual stress analysis & relief, physical metallurgy, metallographic observation, and welding engineering. He served as Executive Editor in Taiwan Welding Society (TWS) and edited the Journal of Welding & Cutting. He received the international scholarship to Germany from the German Academic Exchange Service as the visiting scientist in Department of Ferrous Metallurgy of RWTH Aachen University. Dr. Hsieh is also a reviewer for several international scientific journals and reviewed about 65 articles.

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