利用苯甲酸在水-油之间的传质模拟底吹钢包中冶金反应的传质过程,研究了渣中传质为速度限制环节时底吹流量、渣量、底吹位置对传质速度的影响.研究结果表明,传质速度随底吹流量的增加而增大,超过某一临界流量时速度增加更快,实验中苯甲酸的传质在低流量时kA∝Q0.20,在高流量时kA∝Q0.80,传质速度的突然加快是由于大量渣滴被卷入水中使渣钢接触面积变大;钢-渣间传质速度随渣量的增加而增加;中心底吹比偏心底吹传质速度更快,钢包优化底吹位置的确定应该综合考虑熔池的混匀时间和渣钢间的传质速率.
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