Effect of coke properties and its blending recipe on performances of carbon anode for aluminium electrolysis

作     者：刘凤琴 刘业翔 Mannweiler U Perruchoud R 

作者机构：School of Metallurgical Science and Engineering Central South University Mannweiler Consulting Hadlaubstrasse 71 CH-8006 Zuerich Switzerland R & D Carbon Ltd. P.O. Box 362 CH-3960 Sierre Switzerland 

出 版 物：《Journal of Central South University of Technology》 (中南工业大学学报（英文版）)

年 卷 期：2006年第13卷第6期

页      面：647-652页

核心收录：

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

主　　题：petroleum coke blending recipe quality carbon anode, aluminium electrolysis 

摘      要：The properties and blending recipe of petroleum cokes used to make high quality carbon anodes for aluminium electrolysis were studied. Three kinds of green cokes were selected for bench scale study to illustrate the effects of cokes properties and its blending recipe on anode performances. The results show that impurities derived mainly fi＇om cokes remarkably affect the CO2 reactivity and air reactivity of carbon anodes. Ca, Na and V can increase CO2 reactivity of calcined cokes but S has the contrary effect, and the cokes of high V level generally present high air reactivity. The anodes with good quality can be made by properly selecting and scientifically blending of cokes, some poor quality cokes can also be used to produce high quality anodes with a reasonable blending recipe. Na contaminated anodes have high CO2 reactivity and air reactivity, so the recycled anode butts should be well cleaned to reduce Na content before being introduced into anode production, which is especially important to the low S cokes.