您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 3    June 2003

[PDF Download]    [Flash Online]

    

Determination of ohmic/voltage drop and factors influencing anodic overvoltage of carbon anodes
in Na3AlF6-Al2O3 based melts
LI Qing-yu(李庆余)1,2, LI Jie(李 劼)1,
TIAN Zhong-liang(田忠良)1, ZHANG Gang(张 刚)1

1. School of Metallurgical Science and Engineering,
Central South University, Changsha 410083, China
2. Chemistry Department, Guangxi Normal University, Guilin 5410043, China

Abstract:Experimental technique has been inadequate to anodic overvoltage measurements in aluminum electrolysis. To determine its ohmic/voltage drop precisely, a current interruption technique was modified with a high frequency digital oscilloscope, current interrupters with fast switching time, an improved cell configuration and a simulation applied to the oscillating potential decay curve. The results show that the technique can give good reproducibility for overvoltage studies. A substantial increase of anodic overvoltage is observed with graphite powder addition, metallic aluminum addition and CO bubbling in the melts.

 

Key words:  ohmic/voltage drop; anodic overvoltage; aluminum electrolysis

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn