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CFD modeling of gas−liquid flow phenomenon in lead smelting oxygen-enriched side-blown furnace

Transactions of Nonferrous Metals Society of China 2024年第8期34卷 2671-2685页

作者： Zhen-yu ZHU Ping ZHOU Xing-bang WAN Zhuo CHEN Ling ZHANG Shi-bo KUANG School of Energy Science and Engineering Central South UniversityChangsha 410083China Changsha Design and Research Institute of Nonferrous Metallurgy Changsha 410019China ARC Research Hub for Computational Particle Technology Department of Chemical EngineeringMonash UniversityWellington RdClaytonVIC 3800Australia

A validated numerical model was established to simulate gas−liquid flow behaviors in the oxygen-enriched side-blown bath *** model included the slip velocity between phases and the gas thermal expansion *** modeling results were verified with theoretical correlations and experiments,and the nozzle-eroded states in practice were also involved in the *** comparison,it is confirmed that the thermal expansion effect influences the flow pattern significantly,which may lead to the backward motion of airflow and create a potential risk to production ***,the influences of air injection velocity and furnace width on airflow behavior were investigated to provide operating and design *** is found that the thin layer melt,which avoids high-rate oxygen airflow eroding nozzles,shrinks as the injection velocity increases,but safety can be guaranteed when the velocity ranges from 175 to 275 m/***,the isoline patterns and heights of thin layers change slightly when the furnace width increases from 2.2 to 2.8 m,indicating that the furnace width shows a limited influence on production safety.

关键词： multiphase flow horizontal gas injection backward motion of airflow gas thermal expansion side-blown furnace lead smelting

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