With the development of large-scale bottom-blowing furnaces, the oxygen lance jet and the smelting effect are more and more closely linked. The reasonable setting of the oxygen lance jet has become a significant problem that hinders the development of large oxygen bottom-blowing furnaces. This paper uses ANSYS series software to numerically simulate the melt flow characteristics in a large bottom-blowing furnace under nine operating conditions. The results indicate that the oxygen lance jet at different positions significantly impacts the stirring of the molten pool surface and the longitudinal direction of the molten pool center, thereby affecting the smelting reaction process. When the oxygen lance jet is at 9° and 24° from opposite sides, the effective stirring rate of the molten pool surface is 45.8%, and the longitudinal penetration depth is 1.76 m. The molten pool gas content rate, average melt velocity, and average turbulence energy of melt are relatively high. It is a suitable oxygen lance arrangement method, which provides good kinetic conditions for the smelting process of the large bottom-blowing furnace.

Graphical Abstract

中文翻译：

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不同位置氧枪喷射强化大型底吹炉熔体流动特性分析

随着大型底吹炉的发展，氧枪射流与熔炼效果的联系越来越紧密。氧枪射流的合理设置已成为阻碍大型氧气底吹炉发展的重大问题。本文采用ANSYS系列软件对大型底吹炉在9种工况下的熔体流动特性进行数值模拟。结果表明，不同位置的氧枪射流对熔池表面和熔池中心纵向的搅拌影响显着，从而影响熔炼反应过程。当氧枪射流相对两侧呈9°和24°时，熔池表面的有效搅拌率为45.8%，纵向穿透深度为1.76 m。熔池含气率、平均熔体速度、熔体平均湍流能都较高。是一种合适的氧枪布置方式，为大型底吹炉的冶炼过程提供了良好的动力学条件。

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