冉永華3，周 昊1，岑可法1
(1. 浙江大學(xué) 能源清潔利用國家重點(diǎn)實(shí)驗室，杭州 310027;
2. 中南大學(xué) 冶金科學(xué)與工程學(xué)院，長沙 410083;
3. 昆山鋁業(yè)有限公司，昆山 215313)
摘 要: 以商用有限元計算軟件ANSYS為計算平臺，對75 kA導(dǎo)流型鋁電解槽電磁場和電磁力場分布及其對鋁液流動和波動的影響進(jìn)行了模擬計算。結(jié)果表明：陰極斜坡表面電磁場和電磁力場分布基本呈沿電解槽長軸對稱分布，且電磁力與重力方向相同，這有利于陰極表面電磁力向聚鋁溝排放，而在電磁力作用下，聚鋁溝內(nèi)鋁液波動最大幅度為0.021 m，仍保持在安全范圍之內(nèi)，不會引起兩極短路現(xiàn)象的發(fā)生，表明在現(xiàn)有75 kA普通預(yù)焙槽母線配置方案下，可以維持導(dǎo)流型結(jié)構(gòu)電解槽的正常運(yùn)行。
關(guān)鍵字: 導(dǎo)流型鋁電解槽；磁場；電磁力；有限元方法
in 75 kA drained style aluminum reduction cell
（1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China;
2. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China;
3. Kunshan Aluminium Co Ltd, Kunshan 215313, China）
Abstract: Numerical simulations was conducted based on the commercial finite element method software package ANSYS to study the influences of electromagnetic field and electromagnetic force distribution on flow fields and fluctuations of the molten metal in a 75 kA drained cell. The results show that, the distribution of magnetic field and electromagnetic force in the aluminum film on the cathode slope are in symmetry to the long axis of the cell, especially the magnetic force is in the same direction as the gravity force, which is in favor of the aluminum discharging from the cathode slope. The highest fluctuation of aluminum pad surface in the accumulation sump is 0.021 m, which still remains within the safe range, and will not cause interpolar short circuit, so a normal operation process could be maintained with the same bus bar configuration as the current 75 kA aluminum reduction cells.
Key words: drained style aluminum reduction cell; magnetic fields; electromagnetic force; finite element method
