Abstract: The experimental study of stratified two-phase liquid was conducted for optimizing the stirring effect of diesel spray mixed with nitrogen into top blowing molten bath in slag cleaning furnace for ISA smelting system. The results showed that when the depth of the blowing nozzle in the slag layer was of slag layer 2/3 thickness and was greater than 1/2 of the matte layer thickness，the motion of bubbles was in accordance with the bubble movement law in a single viscous liquid. When the bubbles formed in the interface of slag and matte layer or in the matte layer，rising bubble will brought the matte into the slag layer by viscous force. If the nozzle was located in the matte layer，bubbles going through the interface were in spherical shape，and the amount of matte brought into the slag by bubbles was proportionate to the degree of bubble deformation.

Key words: slag cleaning furnace, multiphase flow, mass transfer, bubble, viscosity, stirred vessel

摘要： 针对云铜艾萨熔炼体系中贫化电炉柴油喷枪混合氮气顶吹熔池搅拌的优化，开展了两相分层液体浸入式气体顶吹的实验研究。实验结果显示：当顶吹喷枪插入熔渣层深度为熔渣层厚度2/3时即插入冰铜层深度大于冰铜层厚度的1/2时，气泡在二者中的运动符合传统的气泡在单一黏性液体中运动的规律；当气泡生成于渣层和冰铜层的分界面及冰铜层中时，在黏滞力的作用下气泡上升运动会将冰铜带入到渣层中；当喷枪口位于冰铜层后，气泡穿越两层流体的分界面后会形变成气泡刚刚产生时的球形，且冰铜被气泡带入到熔渣中的量同气泡在分界面之前的形变量成正比。

关键词: 贫化电炉, 多相流, 传质, 气泡, 黏度, 搅拌容器