低温电解条件下铝电解用NiFe_2O_4-10NiO基金属陶瓷阳极Fe元素腐蚀行为研究  

Corrosion behaviors of Fe element in NiFe_2O_4-10NiO-based cermet anodes for aluminum electrolysis in low temperature electrolyte

作　　者：郑鑫[1] 秦庆伟[1] 杨建红[1,2] 杨文杰 刘英 郭洁 

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]中国铝业郑州有色金属研究院有限公司绿色冶金与材料研究所,河南郑州450041

出　　处：《武汉科技大学学报》2016年第2期92-97,共6页Journal of Wuhan University of Science and Technology

基　　金：中国博士后科学基金资助项目(20100480885);湖北省新世纪高层次人才工程专项经费资助项目(鄂人社函[2011]763号);2014年湖北省重点产业创新团队项目(鄂组通[2014]36号);武汉科技大学钢铁冶金及资源利用教育部重点实验室开放基金资助项目(FMRU201206)

摘　　要：采用粉末冶金技术制备出铝电解用NiFe2O4-10NiO陶瓷基体和30(40Cu-Ni)/(NiFe2O4-10NiO)金属陶瓷阳极,并在低温电解条件下,对NiFe2O4陶瓷相中Fe元素的腐蚀行为进行研究。结果表明,在烧结过程中,NiFe2O4尖晶石陶瓷基体会在氮气中发生离解,在动态化学腐蚀试验和电解试验中,陶瓷相中的Fe元素更容易进入电解质;电解24h后,铝液中Fe、Ni、Cu的含量分别为0.45%、0.13%和0.03%。The NiFe2 O4-10NiO ceramic substrate and 30 (40Cu-Ni)/(NiFe2 O4-10NiO)cermet anode for aluminum electrolysis in NiFe2 O4 phase were prepared by using powder metallurgy technology. The corrosion behaviors of Fe element were studied under the condition of low temperature electro-lyte.The results show that NiFe2 O4 ceramic substrate can be dissociated under N2 atmosphere dur-ing the sintering process .As a result ,the Fe element in NiFe2O4 phase is more easily dissolved in electrolyte in dynamic chemical corrosion and electrolysis tests.After 24 hours of electrolysis,the im-purity contents of Fe,Ni and Cu in liquid aluminum are 0.45%,0.13% and 0.03%,respectively.

关 键 词：NIFE2O4-10NIO 惰性阳极 铝电解 低温电解 铁元素 腐蚀 

分 类 号：TF821[冶金工程—有色金属冶金]