CFD modelling of steel desulfurisation in a gas-stirred ladle
CFD modelling of steel desulfurisation in a gas-stirred ladle
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DOI：
10.1080/03019233.2023.2195308
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发表时间：
2023-05
影响因子：
2.1
通讯作者：
Congshan Mao;Xipeng Guo;N. Walla;A. Silaen;V. Thapliyal;Chenn Q. Zhou
中科院分区：
文献类型：
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作者：
Congshan Mao;Xipeng Guo;N. Walla;A. Silaen;V. Thapliyal;Chenn Q. Zhou
为了提高钢的质量，低硫是二次炼钢的关键。脱硫率受渣钢相互作用的影响，包括渣眼尺寸和界面传质系数。气体搅拌钢包通过搅拌条件，如气体流量、双塞分离角等，对相互作用产生影响。利用三维CFD模拟模型，研究了不同搅拌条件对脱硫率、钢水流动和渣钢界面行为的影响。结果表明，180°分离角比90°分离角具有更高的脱硫效率。气体流量越大，脱硫率越高，用20SCFM(8.92×10~(-3)Nm~3/S)两个塞子的脱硫率比用5SCFM(2.23×10~(-3)Nm~3/S)和20SCFM(一个塞子)的脱硫率高。当两个塞子都使用5SCFM时，脱硫效率最低。
Low sulfur content is crucial in secondary steelmaking to enhance steel quality. The desulfurization rate is influenced by slag-steel interactions, including slag eye size and interfacial mass transfer coefficient. Gas-stirred ladles can impact the interaction through stirring conditions such as argon flow rate and dual plug separation angle. Using a 3D CFD simulation model, the effects of different stirring conditions on the desulfurization rates, molten steel flow, and slag-steel interfacial behaviors were investigated. Results showed that 180° separation angle leads to higher desulfurization efficiency than 90°. A higher argon gas flow rate increases desulfurization rate, and using 20 SCFM (8.92×10-3 Nm3/s) argon flow rate for both plugs resulted in higher desulfurization rate than using 5 SCFM (2.23×10-3 Nm3/s) for one plug and 20 SCFM for the other. The smallest desulfurization efficiency was observed when using 5 SCFM for both plugs.