混合气体流量对锰合金熔体中Mn传质系数的影响  

Effect of Mixed Gas Flowrate on Coefficient of Mass Transfer in Ferromanganese Molten

作　　者：郭端阳[1] 陈刚[1] 张金玲[1,2] 刘璐[1] 王社斌[1,2] 许并社[1,2] 

机构地区：[1]太原理工大学材料科学与工程学院 [2]太原理工大学新材料界面与工程教育部重点实验室,太原030024

出　　处：《太原理工大学学报》2011年第2期155-159,196,共6页Journal of Taiyuan University of Technology

基　　金：山西省留学人员基金资助项目(2008-39)

摘　　要：用感应炉、MgO坩埚把1．5kg的锰合金溶化后恒温至17001750K，用Al2O3管向该熔体中顶吹入0～300mL／min的CO2／N2气体，测算了顶吹精炼过程中Mn元素在金属熔体中的传质系数。结果表明，气体流量对Mn传质系数影响较大，当流量从0增加到300mL／min时，Mn的液相传质系数从6．16×10^-4cm／S增加到2．09×10^-3cm／s。该方法可提高电硅热法生产低碳锰铁资源和能源的利用率。An investigation on coefficient of manganese mass transfer in ferromanganese molten under condition of top blowing CO2/N2 mixture in refining process was conducted to understand the effects of gas flowrate and mixing ratio . Alloy was melted in an induction furnace with temperature ranging from 1 700 K to 1 750 K, and flowrate changing from 100 to 300 ml/min. Marginal effects of gas flowrate and mixing ratio on coefficient of manganese mass transfer was examined. Experimental and calculation results suggested that coefficient of mass transfer in molten changes between 6.16 ×10^-4 and 2.09 ×10^-3 cm/s.

关 键 词：锰合金熔体 锰含量 传质系数 

分 类 号：TF031[冶金工程—冶金物理化学] TF792