Study on the influence of different contents of impure CaO on the process of electromelting magnesia
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 27 September 2023
Issue publication date: 20 November 2023
Abstract
Purpose
The aim of this study is to report the effect of different content of calcium oxide on the process of electromelting magnesia.
Design/methodology/approach
The process of molten magnesia was analyzed by finite element simulation and proved by scanning electron microscope.
Findings
The results show that with the increase of CaO content, the maximum temperature appreciation increases from 3,616°C To 3,729°C, showing an approximate nonlinear evolution. Low thermal conductivity and low specific heat of CaO result in higher temperature. With the increase of CaO content and temperature, the maximum flow velocity of MgO slag increases from 0.043 to 1.34 mm/s. Under different initial CaO contents, the distribution trend of CaO volume fraction is basically the same, and the CaO volume fraction is evenly distributed between 50 and 225 mm in the furnace.
Originality/value
The influence of different contents of impurity calcium oxide on the process of electromelting magnesia was analyzed and a theoretical system was established.
Keywords
Acknowledgements
This work was funding by Integrated demonstration of high value utilization technology and base for solid waste chemical materials of magnesite (Grant/Award Number: 2020YFC1909300); Scientific research fund project of Provincial Department of Education: Study on properties and damage mechanism of synthetic magnesium calcare-resistant materials (Grant/Award Number: L2020005); National Natural Science Foundation of China: Basic research on preparation of high performance refractory by efficient utilization of magnesite characteristic resources (Grant/Award Number: U1908227).
Credit author statement: Zhen Li is the experimental designer and executor of this research, completes data analysis and writes the first draft of the paper. Dianli Qu and Xudong Luo are the designers and persons in charge of the project, guiding experiment design, data analysis, thesis writing and revision. Na Chen participates in experimental design and analysis of experimental results; all authors read and agree to the final text.
Declaration of competing interest: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Data availability statement: All data, models and code generated or used during the study appear in the submitted article.
Citation
Li, Z., Qu, D.-l., Luo, X.-d. and Chen, N. (2023), "Study on the influence of different contents of impure CaO on the process of electromelting magnesia", Anti-Corrosion Methods and Materials, Vol. 70 No. 6, pp. 490-502. https://doi.org/10.1108/ACMM-07-2023-2865
Publisher
:Emerald Publishing Limited
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