复吹转炉钢-渣间容量传质系数的水-油模型

在熔池直径880mm、深258mm的冷态模型中，利用水模拟钢水、机油模拟渣、苯甲酸模拟钢-渣间传输物质来研究熔池直径5285mm、深1545mm的复吹转炉吹炼工艺参数对钢-渣间容量传质系数的影响。结果表明，枪位350mm，顶吹流量117m^3/h，底吹流量1．68m^3/h至2．36m^3/h时，传输物质苯甲酸的容量传质系数变化最显著，在采用枪位350mm，顶吹流量140m^3/h，底吹流量1．68m^3/h，底枪布置方式为8孔对称布置在0．66直径的圆上时，传输物质的容量传质系数最大。

Water-Oil Model for Volumetric Mass Transfer Coefficient between Slag and Metal in Combined Blowing Converter

The effect of operational parameters for combined blowing converter with bath diameter 5 285 mm and depth 1 545 mm on volumetric mass transfer coefficient between slag and metal has been studied using a cold model with bath diameter 880 mm and depth 258 mm by water and oil to respectively simulate metal and slag and using a benzoic acid as the solute for mass transfer between slag-metal. The results showed that as lance lever 350 mm, top blowing rate 117 m3/h, and bottom flow rate 1.68 m3/h to 2.36 m3/h, the change of volumetric mass transfer coefficient of benzoic acid was most obvious, and it was up to maximum as lance lever 350 mm, top blowing rate 140 m3/h, bottom blowing rate 1.68 m3/h and layout of eight hole bottom blowing tuyere being symmetrical in circle of 0.66 diameter.