(1. 中南大學(xué) 冶金科學(xué)與工程學(xué)院，長(zhǎng)沙 410083；2. 河南中孚實(shí)業(yè)股份有限公司，鞏義 451200)
摘 要: 從減小槽內(nèi)水平電流和垂直磁感應(yīng)強(qiáng)度進(jìn)而改善磁流體穩(wěn)定性的角度出發(fā)，提出一種底部出電型結(jié)構(gòu)鋁電解槽，該種電解槽采用陰極垂直出電方式代替?zhèn)鹘y(tǒng)水平出電方式。在ANSYS軟件平臺(tái)上，建立400 kA級(jí)該槽型的電磁場(chǎng)模型并進(jìn)行求解，根據(jù)計(jì)算結(jié)果對(duì)母線配置進(jìn)行優(yōu)化，得到一種可使磁場(chǎng)分布最優(yōu)的母線結(jié)構(gòu)，在該母線配置下，垂直磁感應(yīng)強(qiáng)度最大值為1.658 mT，平均值為0.401 mT，遠(yuǎn)低于同規(guī)格普通電解槽，磁流體穩(wěn)定性計(jì)算結(jié)果進(jìn)一步表明該槽能在低極距下穩(wěn)定運(yùn)行，具有較大的節(jié)能潛力。
關(guān)鍵字: 鋁電解; 母線優(yōu)化; 多物理場(chǎng)
electro-magneto-flow field of aluminum reduction cells with
vertical bottom bars
（1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;
2. Henan Zhongfu Industrial Co., Ltd., Gongyi 451200, China）
Abstract:Based on the target of reducing the horizontal current and vertical magnetic field strength, thereby improving the magnetohydrodynamic stability, a kind of aluminium reduction cell with vertical bottom was improved, in which the current flowed out of cathode vertically instead of horizontally. An electromagnetic simulated model of a 400 kA cell with this structure was developed by ANSYS software, and a bus bar scheme that can make the best electromagnetic field distribution was obtained after being optimized according to the computing result. Adopting this bus bar scheme, the maximum and average values of vertical magnetic flux density are 1.658 mT and 0.401 mT, respectively, which are far lower than those in traditional cells, and the MHD computation further proves that the above cell can operate stably under a small anode-cathode distance and has great potential in energy saving.
Key words: aluminium electrolysis; bus bar optimization; multi-physical field
