外加电压对氧化物熔渣短路还原的影响  

Effects of external voltage on short circuit reduction for molten oxide slag

作　　者：高运明[1] 姜英[1] 郭兴敏[2] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《武汉科技大学学报》2008年第5期469-472,共4页Journal of Wuhan University of Science and Technology

基　　金：国家863计划资助项目(2006AA06Z125);湖北省自然科学基金资助项目(2005ABA019)

摘　　要：利用电池等效电路,讨论了以氧离子导体作隔离膜时氧化物熔渣在外加电压条件下电化学还原时电流变化的特点,并用试验验证了相关理论。试验以碳饱和铁液为还原剂,构成的原电池为:石墨棒|[O]Fe-C饱合|ZrO2(MgO)|Cu(l)+(FeO)(slag)|钼丝。结果表明,在短路电池的基础上,外加电压可促进熔渣中电活性氧化物FeO的还原。在试验条件下,外加电压越大,熔渣中FeO的还原越快。渣中FeO的实际终还原率达到95%以上。By means of cell equivalent circuit; the electrochemical reduction principle of direct extraction of metal from molten oxide slag using oxygen ionic conductor as separation membrane is analyzed, and the current characteristics are discussed under the application of external voltage. Corresponding theoretical analyses are supported by experiments, in which the carbon saturated iron melt is used as the reducing agent and the following galvanic cells are assembled： graphite rod｜ [O]Fe-C saturated ｜ ZrO2 （MgO） [ Cu（1） ＋ （FeO）（slag）｜ Mo wire. The results show that the application of external voltage may accelerate the reduction of electro-active oxide in molten slag. Under experimental conditions, the larger external voltage applied, the faster the rate of FeO electro-reduction. The actual final reduction ratio reaches over 95 %.

关 键 词：可控氧流冶金 电化学还原 熔渣 氧化锆 外加电压 

分 类 号：TF111.5[冶金工程—冶金物理化学]