铝电解槽磁流体稳定性判定:基于垂直磁场B_(z)算术平均值的研究  

Determination Criteria for Magneto-Hydro-Dynamics Stability of Aluminum Electrolytic Cells:Research Based on Arithmetic Mean Value of B_(z)

作　　者：杨溢[1] YANG Yi(Guiyang Aluminum and Magnesium Design&Research Institute Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]贵阳铝镁设计研究院有限公司,贵阳550081

出　　处：《有色金属（冶炼部分）》2025年第1期66-71,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：贵州省科技支撑项目(黔科合支撑[2021]一般384)。

摘　　要：研究了铝电解槽磁流体动力学(MHD)稳定性的判定标准,重点分析了垂直磁场Bz算术平均值(B_(z0))在评估中的关键作用。通过文献综述、理论推导和实证研究,验证了B_(z0)作为MHD稳定性判定指标的有效性。采用某500 kA铝电解项目为案例,结果表明B_(z0)对电解槽磁场设计具有显著指导作用。提出了基于B_(z0)的MHD稳定性判定模型,并对比了不同稳定性判据的优缺点,为铝电解槽的设计和优化提供了新思路和方法。The criteria for determining the Magneto-Hydro-Dynamic(MHD)stability of aluminum electrolytic cells were studied.The key role of the arithmetic mean(B_(z0))of the vertical magnetic field Bz in the evaluation was analyzed.Through literature review,theoretical derivation,and empirical research,the effectiveness of B_(z0)as an index of MHD stability was verified.Using a 500 kA aluminum electrolysis project as an example,the results show that B_(z0)has a significant guiding effect on the design of electrolytic cell magnetic field.The MHD stability evaluation model based on B_(z0)is proposed,and the advantages and disadvantages of different stability criteria are compared,which provides a new idea and method for the design and optimization of aluminum electrolytic cells.

关 键 词：铝电解槽 垂直磁场 算术平均值 磁流体动力学稳定性 B_(z0) 

分 类 号：TF821[冶金工程—有色金属冶金]