5kA惰性阳极铝电解槽槽膛内形及热平衡  

Cell Profile and Heat Balance of 5 kA Inert Anode Aluminum Reduction Cell

作　　者：李劼[1] 王志刚[1] 赖延清[1] 刘伟[1] 徐宇杰[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《过程工程学报》2008年第S1期54-58,共5页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金(编号:50474051);国家重点基础研究发展规划(973)基金(编号:2005CB623703)

摘　　要：以有限元软件ANSYS为开发平台,建立了5kA惰性阳极铝电解槽槽膛内形及热平衡计算模型,计算了过热度和侧部炭块种类对槽膛内形的影响.过热度增大,结壳明显减薄.Si_3N_4/SiC侧部炭块比普通侧部炭块形成更厚的结壳,但采用普通侧部炭块也能够形成满足要求的结壳厚度,而且普通侧部炭块散热量更少,有利于实现热平衡.热平衡研究表明,采用无烟煤阴极炭块通过强化电流和加强保温可以实现热平衡,但在热平衡时底部等温线分布仍然不合理,石墨化阴极比普通阴极更难实现热平衡,但在热平衡时能够保证底部等温线的合理分布,热平衡时电流强度为6.4kA,极距为90mm,电解槽电压为7546mV.With the help of finite element software ANSYS,the cell profile and heat balance calculation model were created,the effects of overheated temperature and the type of side carbon block on the cell profile were studied.With the increase of overheated temperature, the ledge thickness decreased distinctly.Compared with common side carbon block,the Si_3N_4/SiC side carbon block had thicker ledge. But the ledge thickness of common side carbon block was also allowable and its heat loss was less,which was beneficia...

关 键 词：惰性阳极 电解槽 槽膛内形 热平衡 有限元 

分 类 号：TF821[冶金工程—有色金属冶金]