非接触式熔融还原法连续制备铁镍合金  

Continual preparation of ferronickel by no-contacting smelting reduction

作　　者：孙长余[1] 郭兴敏[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《北京科技大学学报》2010年第7期900-904,共5页Journal of University of Science and Technology Beijing

基　　金：国家高技术研究发展计划项目(No.2006AA06Z125);国家自然科学基金资助项目(No.50574011)

摘　　要：以金川渣中含有的镍、铁有价金属元素为研究对象,利用非接触式熔融还原法,采用连续分段加料的方式,探讨了熔渣中铁镍氧化物的还原规律和氧离子渗透膜的传导特征.实验结果表明:利用液态银作为引导阴极,可以得到无碳铁镍合金;采用连续式分段加料,可以提高铁镍氧化物的还原速率;增加铁镍氧化物中NiO比例,有助于增加还原前期的还原速率,减少还原后期的还原时间.另外,升高还原温度,可以提高铁镍氧化物的还原速率;但是,随着温度升高,通过外电路的电量减少.Based on nickel and iron valuable metallic elements in Jinchuan slag,the rule of the reduction of iron-nickel oxide in slag and the conductive characteristics of oxygen ion-permeable membranes were discussed by the no-contacting smelting reduction method and the continual and divided charging method. The results show that carbon-free ferronickel can be obtained with liquid silver as a cathode. The reduction rate of iron-nickel oxide can be improved by the continual and divided charging method. The reduction rate in the earlier stage of reduction increases and the reduction time in the terminal stage decreases with the proportion of NiO in iron-nickel oxide increased. In addition,the reduction rate of iron-nickel oxide will be improved by increasing the reduction temperature,but the electric quantity through the external circuit will be decreased.

关 键 词：熔融还原 离子渗透膜 熔渣 还原反应 铁镍合金 

分 类 号：TF111.15[冶金工程—冶金物理化学]